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CN118235568B - Photovoltaic ecological desertification control system utilizing multisource organic matter to improve in-situ stony desertification - Google Patents

Photovoltaic ecological desertification control system utilizing multisource organic matter to improve in-situ stony desertification Download PDF

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Publication number
CN118235568B
CN118235568B CN202410666071.9A CN202410666071A CN118235568B CN 118235568 B CN118235568 B CN 118235568B CN 202410666071 A CN202410666071 A CN 202410666071A CN 118235568 B CN118235568 B CN 118235568B
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photovoltaic
water
fermentation
desertification
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CN118235568A (en
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董滨
冯思盈
沈丹妮
王慧
徐祖信
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Tongji University
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Tongji University
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G20/00Cultivation of turf, lawn or the like; Apparatus or methods therefor
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • A01G25/02Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00Housing animals; Equipment therefor
    • A01K1/0047Air-conditioning, e.g. ventilation, of animal housings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00Housing animals; Equipment therefor
    • A01K1/0094Animal shelters or barns especially adapted for keeping horses
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K7/00Watering equipment for stock or game
    • A01K7/02Automatic devices ; Medication dispensers
    • A01K7/04Automatic devices ; Medication dispensers actuated by float
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K7/00Watering equipment for stock or game
    • A01K7/02Automatic devices ; Medication dispensers
    • A01K7/06Automatic devices ; Medication dispensers actuated by the animal
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05DINORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00Other inorganic fertilisers
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/20Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80Soil conditioners
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00Arrangements or adaptations of tanks for water supply
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/28Methods or installations for obtaining or collecting drinking water or tap water from humid air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20Wind motors characterised by the driven apparatus
    • F03D9/28Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00Supporting structures for PV modules
    • H02S20/10Supporting structures directly fixed to the ground

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Abstract

The invention belongs to the technical field of stony desertification soil improvement, in particular to a photovoltaic ecological desertification control system which utilizes multi-source organic matter in-situ stony desertification improvement, comprising a photovoltaic subsystem, an air water taking subsystem, a drip irrigation subsystem, a natural induced draft subsystem, a culture ditch and an organic modifier; the photovoltaic subsystem consists of a plurality of photovoltaic devices which are regularly arranged, a fixed photovoltaic array is adopted, and a plurality of rows of photovoltaic plates are used as a group of photovoltaic units; the photovoltaic ecological desertification control system with the multi-source organic matter in-situ stony desertification improvement can effectively solve the problems of low organic matter content, low plant survival rate and loose soil and difficult water retention by applying the organic modifier on the basis of the original photovoltaic desertification control technology wind prevention and sand fixation, and provides the alternative mixing proportion range of each component in the organic modifier, thereby truly realizing desertification soil improvement and sustainable development of a photovoltaic desertification control mode.

Description

Photovoltaic ecological desertification control system utilizing multisource organic matter to improve in-situ stony desertification
Technical Field
The invention belongs to the technical field of stony desertification soil improvement, and particularly relates to a photovoltaic ecological desertification control system utilizing multi-source organic matter in-situ stony desertification improvement.
Background
With the increasing serious problems of water resource shortage, land salinization, wind erosion and the like, serious soil desertification phenomenon occurs in partial areas of China. In the southwest area of China, the fragile karst ecosystem has large area of land loss and vegetation degradation under the background of obvious human-land contradiction and unreasonable land utilization for a long time, and the soil stony desertification phenomenon is formed and developed. In recent years, the mode of photovoltaic desertification control combines the development of photovoltaic and desert control with water-saving agriculture, and the effect of sand control is achieved by planting plants, so that the coordination and unification of ecological benefit, economic benefit and social benefit can be realized, and the mode of photovoltaic desertification control is widely applied and popularized. Meanwhile, a development treatment mode of photovoltaic and livestock raising is explored in a part of areas, solar power generation on a plate, plant planting under the plate and cattle and sheep inter-plate cultivation are realized, and triple utilization of one land is realized.
However, the above-mentioned techniques often have the following drawbacks: because the desertification soil has poor water storage and fertilizer retention capability, the soil productivity is greatly reduced, and the survival rate of plants is lower. At present, a mode of establishing a large-scale sand-fixation protection forest belt is mainly adopted for desertification land treatment, the problem of nutrient sources required by ecological restoration of desertification soil is not solved, and the desertification soil condition is not effectively improved. Meanwhile, the existing 'photovoltaic+breeding' mode generally carries out stocking on cattle and sheep, and the problems of inconvenience in management, difficulty in control of fecal pollution and the like can exist.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a photovoltaic ecological desertification control system improved by utilizing multi-source organic matter in-situ stony desertification, which comprises a photovoltaic subsystem, an air water taking subsystem, a drip irrigation subsystem, a natural induced draft subsystem, a culture ditch and an organic modifier;
the photovoltaic subsystem consists of a plurality of regularly arranged photovoltaic devices, a fixed photovoltaic array is adopted, a plurality of rows of photovoltaic plates are used as a group of photovoltaic units, a space with the width of 4-5 m is reserved between the two groups of photovoltaic units and is used as a cultivation ditch, the photovoltaic plates are fixedly installed on the ground by using a bracket, pasture is planted on the ground and is positioned below the photovoltaic plates, and the pasture is used for preventing wind, fixing sand and feeding cattle and sheep;
The air water taking subsystem consists of an air water taking device and a water reservoir, and is arranged at intervals below the photovoltaic panel, the air water taking device comprises a top exposed turbine, an arc-shaped surface with an external diversion trench and a diversion hole and an internal turbine, and the air water taking device is connected with the water reservoir through a pipeline;
The drip irrigation subsystem is communicated with the water reservoir and the water supply pipe network, and is used for taking water in the water reservoir preferentially, and taking water through the water supply pipe network when the water amount in the water reservoir is insufficient;
The cultivation ditch is distributed at the passage between the photovoltaic units and is divided into an overground structure and an underground structure, the overground structure is a cultivation house, the underground structure is a fermentation ditch, and the fermentation ditch adopts two sets of ventilation systems of a natural wind utilization system and an auxiliary active aeration system;
The natural induced air subsystem strengthens the sweeping wind strength through an air supply channel formed between the photovoltaic panel and the ground surface through arrangement of the photovoltaic units and arrangement of the induced air structure, provides enough wind energy for ventilation of the air water taking subsystem and the culture ditch underground structure, and realizes effective utilization of natural wind.
Preferably, the photovoltaic panels are installed facing away from the main wind direction, and the inclination angles of the photovoltaic panels are the same and less than 30 degrees;
in the photovoltaic unit, the installation height of the photovoltaic panel is sequentially reduced along the main wind direction.
Preferably, the air water collector is inserted into the ground for 2m-5m, the top end of the pipeline is provided with a top exposed turbine, the bottom end of the top exposed turbine is provided with an inner turbine, the inner turbine is positioned in the pipeline, the air water collector is provided with an arc surface, the arc surface is also provided with a circle of external diversion trenches, four sides of the arc surface are respectively provided with a diversion port, the center part of the arc surface is uniformly provided with diversion holes, and the diversion ports and the diversion holes are communicated with the pipeline;
The mouth of the water accumulator is provided with a first filtering piece, and a second filtering piece is arranged at the water outlet pipe network of the water accumulator.
Preferably, the breeding house is a main area where cattle and sheep move, automatic drinkers for cattle and sheep are arranged in the breeding house at intervals, and a water source is from the water reservoir and a water supply network;
the automatic drinking bowl for cattle and sheep adopts double control of pressing water outlet and floating ball water control;
the fermentation ditch is separated from the ground cultivation house by an isolation net and can be flush with the ground or slightly lower than the ground.
Preferably, the fermentation ditch is rectangular, the ditch depth is 3-4 m, a slope inclining from the middle to two sides is arranged in the ditch, the inclination angle is 45-60 degrees, and the slope bottom of the slope is connected with an arc-shaped fermentation area and is a main area for aerobic fermentation of cow and sheep manure;
Preferably, the fermentation ditch is separated from the surrounding sandy soil by an isolation net, namely a closed net with an oblique square grid welding structure, so that the manure in the fermentation ditch can be contacted with deep soil while the physical barrier is realized.
Preferably, a horizontal stirring paddle is arranged in the arc-shaped fermentation area, and the paddles of the stirring paddle are irregularly arc-shaped to form a fecal 'division'.
Preferably, the natural wind utilization system comprises an overground air inlet, a ventilation pipe and an air outlet, wherein the overground air inlet adopts a gradually-expanding structure, the position with larger section diameter faces to the main wind direction, the ventilation pipe is introduced by utilizing the narrow pipe effect, and the air outlet is arranged on the side wall of the fermentation ditch at intervals; the auxiliary active aeration system consists of a methane concentration sensor, a PLC control system, a blower and an early warning system.
Preferably, the organic modifier is prepared from water, sand and sludge according to a ratio of 0.3-0.5: 0.2 to 0.4:1, and simultaneously assisting in the fecal sewage fermentation product; in the organic modifier, sludge is subjected to basic pretreatment to achieve a harmless effect, a sludge composting product obtained through aerobic fermentation is adopted, the water content of the sludge is preferably 30-50%, the organic matter content is preferably 30-50%, and the pH of the sludge and the organic matter is slightly alkaline.
The beneficial effects of the invention are as follows:
1. The invention discloses a photovoltaic ecological desertification control system utilizing multi-source organic matter in-situ stony desertification improvement, which is characterized in that the problems of low organic matter content, low plant survival rate, loose soil and difficult water retention are effectively solved by applying an organic modifier on the basis of wind prevention and sand fixation of the original photovoltaic desertification control technology. The invention adopts the organic modifier and takes the organic wastes such as municipal sludge, livestock and poultry manure and the like as the main raw materials, achieves the double effects of waste treatment and recycling and desertification soil improvement, adopts materials in situ, has low cost, and truly realizes desertification soil improvement and sustainable development of a photovoltaic desertification control mode.
2. The natural wind-inducing system is innovatively designed in the photovoltaic ecological desertification control system with the improved multisource organic matter in-situ stony desertification control, and the narrow pipe effect structure of the photovoltaic panel is constructed through arrangement of different heights of the photovoltaic units and the wind-inducing structure, so that the sweeping wind strength of an air supply channel between the photovoltaic panel and the ground surface is effectively enhanced, sufficient wind energy is provided for an air water taking subsystem, and effective utilization of natural wind is realized.
3. The invention innovatively designs a natural air inducing system, and the arrangement of different heights and air inducing structures of the photovoltaic units is used for constructing a narrow pipe effect structure of the photovoltaic panel, guiding natural air to enter the fermentation ditch, and forming a double ventilation system with the auxiliary active aeration device, so as to provide oxygen for the fermentation ditch, improve the fecal sewage aerobic fermentation efficiency in the fermentation ditch, reduce the influence of fermentation odor and prevent the occurrence of photovoltaic fire accidents.
4. The natural wind-guiding system enhances the strength of cleaning wind, and due to the arrangement of the natural wind-guiding structure, partial sand grains can enter the fermentation ditch along with strong wind and serve as fermentation auxiliary materials to adjust the water content and the material structure of the excrement.
5. According to the photovoltaic ecological desertification control system with the improved multisource organic matter in-situ stony desertification control, local natural resources are fully utilized to perform in-situ water taking, rainwater can be collected during precipitation, wind energy can be used for condensing and collecting water vapor in air in order to solve the problem of shortage of local water resources, the air water taking system does not need additional power consumption, an air water taking device is firstly transformed through an underground structure, the air water taking device is inserted into the ground, a top exposed turbine is driven by wind power to rotate, an internal turbine in a water taking device main body is driven to rotate, so that convection is formed between the ground and underground air, because the underground temperature is low, the water vapor in the air is condensed when contacting the arc-shaped surface of the water taking device, finally enters the bottom water storage device to be collected and stored, and the in-situ water taking quantity can meet 80% of pasture irrigation and livestock drinking requirements.
6. According to the invention, through the design of the cultivation ditch in the photovoltaic ecological desertification control system with the improved multi-source organic matter in-situ stony desertification control, on one hand, livestock and poultry manure generated by cattle and sheep in the cultivation ditch range can be collected, uniformly treated and utilized, the manure after aerobic fermentation treatment has better stability and higher humus content, the fertility effect is better, and the environmental pollution risk possibly brought by cattle and sheep stocking is also reduced to a certain extent; on the other hand, the problem that livestock and poultry manure can only be contacted with surface sandy soil and deep soil is difficult to improve in the traditional under-plate cattle and sheep stocking mode is effectively solved, so that the application of the organic modifier is more flexible, and the stony desertification soil improvement effect is improved.
7. According to the invention, the full utilization of natural resources and environmental conditions is realized in the photovoltaic ecological desertification control system with the improved multi-source organic matter in-situ stony desertification control, the local abundant solar energy and wind energy are fully utilized to carry out photovoltaic power generation and air water intake, the natural wind is utilized to carry out underground ventilation in a photovoltaic arrangement, induced draft structural design and other modes, organic fertilizers are formed by cattle and sheep manure, stony desertification soil is improved from the soil deep layer, the self-supply of energy and resources in the in-situ ecological desertification control system is realized, and a feasible idea and mode are provided for in-situ ecological desertification control in soil desertification areas.
8. The photovoltaic ecological desertification control system utilizing the multisource organic matter in-situ stony desertification improvement has higher mechanization and automation degree, can meet the requirement of unattended autonomous operation in desert areas, has simple and feasible scheme and convenient construction, does not need high-precision instruments or equipment with higher requirements on operation conditions, is well adapted to various complex environmental conditions, can create economic benefits for local areas in a photovoltaic+planting+breeding mode, and has replicability and popularization.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is an overall layout of an in situ ecological desertification control system of the photovoltaic, zootechnical and organic amendments of the present invention;
FIG. 2 is a schematic diagram of the structure of the air intake unit of the present invention;
FIG. 3 is a schematic view of another structure of the air intake unit of the present invention;
FIG. 4 is a front cross-sectional view and a top view of the air intake device body structure of the present invention;
FIG. 5 is a schematic view of the cultivation ditch in FIG. 1;
FIG. 6 is a schematic diagram of a natural draft subsystem according to the present invention;
FIG. 7 is a schematic view of the internal structure of the pipe according to the present invention;
FIG. 8 is an enlarged view at A of FIG. 7;
fig. 9 is a schematic view of the internal structure of the ring in the present invention.
In the figure: 1. a photovoltaic panel; 2. grass; 3. an air water collector; 4. automatic drinking bowl for cattle and sheep; 5. an induced draft device; 6. an isolation net; 7. a closed net; 8. a ramp; 9. an arc-shaped fermentation zone; 10. a top bare turbine; 11. an arcuate surface; 12. an external diversion trench; 13. a first filter; 14. a water reservoir; 15. an inner turbine; 16. a deflector aperture; 17. a diversion port; 18. an air inlet; 19. an air outlet; 20. an active aeration system; 21. a horizontal stirring paddle; 22. a drip irrigation system; 23. a pipe; 24. a second filter; 25. a blade; 26. a first magnetic block; 27. a circular ring; 28. a second magnetic block; 29. a fixing plate; 30. a baffle; 31. a discharge chute; 32. a filter screen; 33. a feed chute; 34. a connecting groove; 35. a cavity; 36. a magnetic plate; 37. an electromagnet.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 9, the photovoltaic ecological desertification control system utilizing multi-source organic matter in-situ stony desertification improvement comprises a photovoltaic subsystem, an air water taking subsystem, a drip irrigation subsystem, a natural induced draft subsystem and a cultivation ditch, and organic modifier is adopted to improve desertification soil;
The photovoltaic subsystem consists of a plurality of regularly arranged photovoltaic devices, a fixed photovoltaic square matrix is adopted, a plurality of rows of photovoltaic plates 1 are used as a group of photovoltaic units, and a space with the width of 4-5 m is reserved between the two groups of photovoltaic units to serve as a cultivation ditch;
In the photovoltaic system, in order to simultaneously improve the solar energy utilization and natural wind induced air effect, the photovoltaic panel 1 is installed back to the main wind direction, the inclination angles of each group of photovoltaic units are the same, and the optimal inclination angle smaller than 30 degrees is designed by combining the local multi-year month average irradiance, direct component irradiance, scattered component irradiance, wind speed and other climatic conditions, so that the inclination angle is as small as possible under the condition of occupation permission, and the induced air effect of the narrow pipe effect is improved; the irradiance, the induced air effect and the occupation requirement are comprehensively considered, and the inclination angle is selected after technical and economic comparison, and is generally not suitable to be larger than 30 degrees;
Through arrangement of photovoltaic units and arrangement of an induced air structure, the sweeping wind intensity of an air supply channel formed between the photovoltaic panel 1 and the ground surface is enhanced, sufficient wind energy is provided for ventilation of an air water taking subsystem and the underground structure of the culture ditch, and effective utilization of natural wind is achieved
In some preferred embodiments, the installation heights of the multiple rows of photovoltaic panels 1 in the photovoltaic unit are reduced in sequence along the main wind direction, the heights are not too high, so as to ensure the induced air effect, and the lowest height of the photovoltaic panels 1 is not less than 1.8m for ensuring the normal activities of cattle and sheep;
In some preferred embodiments, within the photovoltaic unit, the array pitch of the photovoltaic panels 1 should ideally satisfy the year 9: 00-15: 00 The front, back, left and right are not shielded in the (local real sun) time period, and the air induction effect of the slot duct effect is improved as small as possible on the basis of the front, back, left and right are not shielded; aiming at lower latitude areas in southwest of China, the front-back spacing is generally 2-3 m, the spacing value of the higher latitude areas in northwest of China is correspondingly increased, the spacing value can be 5-6 m, and the specific value is determined according to the local actual situation;
Pasture 2 is planted under the photovoltaic subsystem and is used for preventing wind, fixing sand and feeding cattle and sheep;
In some preferred embodiments, the forage grass 2 is alfalfa with strong drought tolerance and feeding by cattle and sheep, the perennial leguminous forage grass 2 has developed root system, can absorb deep soil moisture, is suitable for being planted in most areas of China, and is rich in protein and multiple vitamins;
in some more preferred embodiments, the forage grass 2 is planted by selecting one or more of alfalfa with strong drought tolerance, seagrass, achyranthes and seagrass at intervals, the former with good palatability and is planted in places close to the cultivation ditch so as to be convenient for cattle and sheep to eat, and the latter with poor palatability, but with good cold resistance, drought resistance, barren resistance, salt and alkali resistance, wind erosion resistance and sand burying resistance, is an important sand-control sand-fixation pioneer plant, and can be planted in places slightly far from the cultivation ditch.
The air water taking subsystem consists of an air water taking device 3 and a water storage device 14, and is arranged at a photovoltaic interval;
In some preferred embodiments, the air water collector 3 and the water reservoir 14 are integrated, the diameter of the arc surface 11 of the water collector is 0.3-0.4 m, the pipe diameter of the communicating pipe 23 is 0.2-0.22 m, the water reservoir 14 is positioned at the tail end of the water collector and is in the shape of a square pocket with the diameter of about 0.5m, and the pocket mouth is communicated with the pipe 23;
The air water collector 3 is inserted into the ground by about 2-2.2 m, the top exposed turbine 10 is driven by wind power to rotate, and the internal turbine 15 in the water collector body is driven to rotate, so that convection is formed between the ground and underground air, and because the underground temperature is low, water vapor in the air is condensed when contacting the arc surface 11 of the water collector, enters the pipeline 23 along the surface diversion hole 16 and the diversion port 17, and then enters the bottom water reservoir 14 along the pipeline 23 to be collected and stored;
the periphery of the arc-shaped surface 11 of the air water collector 3 is also provided with a circle of inward inclined external diversion grooves 12, and the four sides of the arc-shaped surface 11 are respectively provided with a diversion opening 17 for collecting rainwater, and the rainwater and the condensed water enter a water storage device 14 for storage for standby;
In order to filter the impurity in rainwater and condensed water, prevent sand particles from entering the drip filtration system, a first filter element 13 is arranged at the mouth of the water reservoir 14;
In some more preferred embodiments, the air water collector 3 and the water reservoir 14 are not integrated devices, but are connected through a pipeline 23, the water reservoir 14 receives condensed water and rainwater from the water collector on one hand, and is communicated with a water supply network on the other hand, the drip irrigation unit is only connected with the water reservoir 14 through a pipeline, and the water supply network is not required to be directly connected, and a second filter 24 is arranged at the water outlet network of the water reservoir 14.
The drip irrigation subsystem adopts an intelligent automatic drip irrigation system 22 which is communicated with the water reservoir 14 and the water supply pipe network, the intelligent automatic drip irrigation system 22 takes water in the water reservoir 14 preferentially, when the water quantity in the water reservoir 14 is insufficient, water is taken through the water supply pipe network, and the pipeline connection of the drip irrigation subsystem is different according to the different designs of the air water taking units;
In some preferred embodiments, the drip irrigation units are arranged along the photovoltaic units and under the photovoltaic panel 1, with one drip irrigation hole at intervals of 0.3 m;
In some preferred embodiments, the irrigation water demand is related to the climate conditions and plant species of the technical application area, and the northwest arid regions such as Gansu Hexi, qinghai, xinjiang and the like are primarily estimated, and for ecological restoration, different types of drought vegetation are needed, the water demand is about 250-400 m 3 per mu of land; for stony desertification areas in southwest of China, the water requirement of about 200-300 m 3 per mu of land is estimated initially;
The cultivation ditches are distributed at the passage between the photovoltaic units and are divided into an overground structure and an underground structure, the overground structure is a cultivation house, the underground structure is a fermentation ditch, and meanwhile, a ventilation system is arranged in the fermentation ditch for improving the aerobic fermentation efficiency of the excrement, reducing the influence of fermentation odor and preventing the occurrence of photovoltaic fire accidents;
the breeding house is a main area of the cattle and sheep activity, an automatic water fountain 4 for the cattle and sheep is arranged in the middle of the breeding house in a spacing mode, and a water source is from the water reservoir 14 and a water supply network;
in some preferred embodiments, the automatic drinking bowl 4 for cattle and sheep is composed of a semicircular drinking bowl and a bottom supporting structure, the height is set to be 0.5-1 m, a pressing water outlet switch and a floating ball plug are arranged in the semicircular drinking bowl, the drinking bowl adopts double control of pressing water outlet and floating ball water control, namely, the cattle nose and the sheep horn touch the pressing switch to enable water to be discharged, water outlet is stopped when the water level in the drinking bowl reaches the set height, and meanwhile, the floating ball plugs the water outlet and can also realize water stopping;
the fermentation ditch is separated from the ground cultivation house by an isolation net 6 and can be flush with the ground or slightly lower than the ground, and the fermentation ditch is positioned underground;
the fermentation ditch is rectangular, the ditch depth is 3-4 m, a slope 8 inclining from the middle to two sides is arranged in the ditch, the inclination angle is 45-60 degrees, the slope bottom is connected with an arc-shaped fermentation area 9 and is a main area for aerobic fermentation of cow and sheep manure, and when the manure falls into the fermentation ditch through a slotted plate, the manure falls into the arc-shaped fermentation area 9 along the slope 8 for aerobic fermentation;
In some preferred embodiments, due to the arrangement of the natural wind induced air structure, part of sand grains can enter the fermentation ditch along with strong wind and serve as fermentation auxiliary materials to adjust the water content and the material structure of the excrement;
in some more preferred embodiments, the unmanned aerial vehicle can be utilized to spray microbial agents into the fermentation ditch periodically, so as to accelerate the fermentation process and improve the aerobic fermentation rate;
the arc-shaped fermentation area 9 is internally provided with a horizontal stirring paddle 21, and gravity driving is combined with mechanical control, wherein the gravity driving is that when the falling excrement is enough, the horizontal stirring paddle 21 is pushed to rotate, and meanwhile, a certain stirring frequency is set for mechanical stirring at regular time;
the stirring frequency mechanically controlled by the horizontal stirring paddle 21 is set to be 1r/24h;
The paddles of the horizontal stirring paddles 21 are irregularly arc-shaped to form manure 'cells', and manure with long residence time and near completion of fermentation can be contacted with surrounding sandy soil under the action of the horizontal stirring paddles 21 and also used as an improver of the sandy soil, so that the manure is returned to the field;
In some preferred embodiments, the maximum diameter of the horizontal stirring paddle 21 is slightly smaller than that of the arc-shaped fermentation zone 9, and the paddles are arranged at intervals of 0.5-0.8 m in the horizontal direction;
the fermentation ditch is separated from the surrounding sandy soil by a separation net 6, namely a closed net 7 with an oblique square grid welding structure, so that the manure in the fermentation ditch can be contacted with deep soil while the physical separation is realized.
The natural wind utilization system comprises an overground wind inlet 18, a ventilation pipe and an air outlet 19, wherein the overground wind inlet 18 adopts a gradually-expanding structure and faces to the main wind direction of the area, and is used for introducing strong wind into the ventilation pipe, the air outlet 19 is arranged on the side wall of the fermentation ditch at intervals, and the natural wind utilization system is mutually matched with the photovoltaic unit arrangement, so that the natural wind utilization effect is improved, and the ventilation of the fermentation ditch is enhanced;
In some preferred embodiments, the ratio of the smallest diameter to the largest diameter of the cross section of the above-ground variable cross section air intake 18 is 0.6-0.8, the air intake 18 is arranged below the photovoltaic panel 1 and in the pasture 2, the largest diameter cross section faces the local main wind direction, and the setting height is slightly higher than the pasture 2, but not too high, so that the air intake device 5 can fully utilize the cleaning wind of the air supply channel;
In some preferred embodiments, in order to reduce the wind resistance when the air flow is conveyed in the pipeline, the above-ground air inlet 18 is connected with a section of ventilation pipe vertically entering the ground, and then is connected with a section of ventilation pipe arranged in sandy soil below the photovoltaic device at a certain inclination angle, wherein the end point of the ventilation pipe, namely the air outlet 19, is horizontally arranged on the side wall of the fermentation ditch at intervals of about 1m, and the depth is 1.5-2 m;
In some preferred embodiments, an above-ground air intake 18 corresponds to a section of ventilation pipe and an air outlet 19, and flexible connection is adopted between the three to reduce turning windage;
In some preferred embodiments, the overground part of the natural wind utilization system is fixed by adopting an annular fixing frame, and the vertical ventilation pipe is sleeved in the ring, so that the structure is prevented from being displaced under the influence of strong wind;
The active aeration system 20 consists of a methane concentration sensor, a PLC control system, an air blower and an early warning system, when the methane concentration is detected to exceed the limit value, the air blower is automatically started to perform aeration, and when the methane concentration is detected to reach the dangerous concentration, the early warning system is started to transmit information to maintenance personnel for timely processing;
in some preferred embodiments, the methane concentration sensor, the PLC control system and the early warning system are integrated in one control box, each control box is connected with a blower, the control boxes are arranged at intervals of about 2m in the fermentation ditch, and the control logic of the PLC system is as follows: setting the limit value of the methane concentration to 10ppm, setting the dangerous concentration to 80ppm, and when the methane concentration sensor detects that the current methane concentration is higher than the limit value, indicating that the oxygen content in the fermentation ditch is insufficient and the anaerobic fermentation reaction is active, starting a blower at the moment until the methane concentration is lower than the limit value, and stopping the blower; when the detected methane concentration reaches the dangerous concentration, starting an early warning system except for starting a blower, and transmitting information to maintenance personnel;
in some more preferred embodiments, the active aeration system 20 performs staged aeration, i.e. the blower has a plurality of stages, different stages corresponding to different air volumes, and the control logic of the PLC system may employ staged concentration limits accordingly: the methane concentration first order limit was set to 10ppm, starting a first gear of the blower when the speed reaches the preset speed; the secondary limit was set to 25ppm, starting a second gear of the blower when the speed reaches the preset speed; the three-level limit is set to 50ppm, starting a third gear of the blower when the speed reaches the preset speed; if a gear-free blower is adopted, the staged aeration can be realized by connecting a plurality of blowers in parallel.
The organic modifier is prepared by mixing water, sand and sludge in proportion, and is assisted with a fecal sewage fermentation product, the sludge is subjected to basic pretreatment to achieve a harmless effect, untreated sludge possibly having a heavy metal exceeding risk is not allowed to be used, the sludge composting product subjected to aerobic fermentation is adopted, the water content of the sludge is preferably 30-50%, the organic matter content is preferably 30-50%, the pH of the sludge and the organic matter is slightly alkaline, the heavy metal content is required to meet related requirements, and the sludge contains more nutrient elements such as nitrogen and phosphorus; the ideal mixing ratio of water, sludge and sand is about: 0.3 to 0.5:0.2 to 0.4:1, a step of; the mixing proportion is regulated and controlled by parameters such as the control of the application amount of the sandy soil modifier in unit volume, the irrigation frequency, the irrigation amount control and the like;
in some preferred embodiments, 400 to 600kg of sludge is applied per volume (m 3) of sandy soil;
in some preferred embodiments, the sludge fermentation product is applied by surface application and simple mixing with sand, and the fecal fermentation product is contacted directly with deep sand in the fermentation trench.
In some preferred embodiments, the inner wall of the pipe 23 is fixedly connected with a pair of fixing plates 29, the top surface of the fixing plates 29 is fixedly connected with a circular ring 27 through a spring, the inner side wall of the top surface of the circular ring 27 is rounded, the outer side wall of the circular ring 27 is attached to the pipe wall, the inner side wall of the circular ring 27 is fixedly connected with a filter screen 32 which is obliquely arranged, the surface of the inner turbine 15 is fixedly connected with a group of blades 25, the bottom surface of the blades 25 is fixedly connected with a first magnetic block 26, and the bottom surface of the filter screen 32 is fixedly connected with a group of second magnetic blocks 28 which repel the first magnetic block 26; a cavity 35 is formed in the ring 27, a feed chute 33 communicated with the cavity 35 is formed in the inner side wall of the ring 27, and the feed chute 33 is parallel to the lowest point of the filter screen 32; because the first filter 13 can be blocked by the impurities in the rainwater and the condensed water when being used for a long time, the rainwater and the condensed water can not normally enter the water reservoir 14, at the moment, the impurities in the water can be filtered firstly by the filter screen 32 arranged in the pipeline 23, meanwhile, when the internal turbine 15 rotates, the blades 25 can also rotate, at the moment, the first magnetic block 26 intermittently passes through the second magnetic block 28, so that the first magnetic block 26 pushes the second magnetic block 28 to move up and down, at the moment, the filter screen 32 can shake, at the same time, because the filter screen 32 is obliquely arranged, the impurities on the filter screen 32 can shake to the feed chute 33 and then enter the cavity 35 for storage, so that the impurities can not be accumulated above the filter screen 32, and the blocking of meshes of the filter screen 32 is caused, so that the blocking of the impurities in the pipeline 23 can be prevented.
The inner wall of the cavity 35 is slidably connected with a magnetic plate, the top surface of the magnetic plate is in an inclined surface shape, the bottom surface of the cavity 35 is fixedly connected with an electromagnet which repels the magnetic plate, a reset spring is fixedly connected between the electromagnet and the magnetic plate, a connecting groove 34 communicated with the cavity 35 is formed in the outer side wall of the circular ring 27, a discharging groove 31 which is flush with the connecting groove 34 is formed in the side wall of the pipeline 23, a baffle 30 made of magnetic materials is twisted in the discharging groove 31 through a torsion spring, and the baffle 30 repels the magnetic plate; when the impurity in the cavity 35 stores more, can start the electro-magnet and promote the magnetic plate, at this moment the magnetic plate can promote the impurity in the cavity 35 and upwards remove, until impurity removal to spread groove 34 department, then impurity can follow the inclined plane of magnetic plate and slide to in the blown down tank 31, baffle 30 can be promoted by the magnetic plate and no longer seal the blown down tank 31 simultaneously, and at this moment impurity can be smooth discharge from the blown down tank 31 to reached the impurity that stores in the cavity 35 carries out automatic exhaust's effect.
Working principle: the induced air effect is improved through the arrangement of the photovoltaic device: the photovoltaic panels 1 are installed back to the main wind direction, the inclination angles of each group of photovoltaic units are the same, the optimal inclination angles are designed by combining local weather conditions such as the average annual month irradiance, the direct component irradiance, the scattered component irradiance, the wind speed and the like of a station site, the inclination angles are made to be as small as possible under the condition of occupation permission so as to improve the induced air effect of the narrow pipe effect, the installation heights of the multiple rows of photovoltaic panels 1 in the photovoltaic units are sequentially reduced along the main wind direction, and the heights are not too high so as to ensure the induced air effect. The pasture 2 is used for preventing wind and fixing sand and feeding cattle and sheep.
The bare turbine 10 at the top of the air water collector is driven by wind power to rotate, and the internal turbine 15 in the water collector body is driven to rotate, so that convection is formed between the ground and underground air, and because the underground temperature is low, water vapor in the air is condensed when contacting the arc-shaped surface 11 of the water collector, enters the pipeline 23 along the surface diversion holes 16 and the diversion openings 17, and then enters the bottom water reservoir 14 along the pipeline 23 to be collected and stored; the intelligent automatic drip irrigation system 22 takes water in the water reservoir 14 preferentially, and takes water through the water supply pipe network when the water amount in the water reservoir 14 is insufficient; in the fermentation ditch, a natural wind utilization and auxiliary active aeration dual ventilation system is adopted for improving the fecal sewage aerobic fermentation efficiency, reducing the influence of fermentation odor and preventing the occurrence of a photovoltaic fire accident.
The water fountain adopts double control of pressing water outlet and floating ball water control, namely, the ox nose and the sheep horn touch the pressing switch to discharge water, and the water discharge is stopped when the water level in the water fountain basin reaches a set height, and meanwhile, the floating ball blocks the water outlet and can also realize water stopping; the horizontal stirring paddle 21 adopts the combination of gravity driving and mechanical control, and the gravity driving drives the horizontal stirring paddle 21 to rotate when the falling excrement is enough, and simultaneously sets a certain stirring frequency to perform mechanical stirring at regular time.
When the auxiliary active aeration system detects that the methane concentration exceeds the limit value, the blower is automatically started to perform aeration, and when the methane concentration reaches the dangerous concentration, the early warning system is started to transmit information to maintenance personnel for timely processing; the limit value of the methane concentration is set to be 10ppm, the dangerous concentration is set to be 80ppm, when the methane concentration sensor detects that the current methane concentration is higher than the limit value, the oxygen content in the fermentation ditch is insufficient, the anaerobic fermentation reaction is active, at the moment, the blower is started until the methane concentration is lower than the limit value, and the blower stops running; when the detected methane concentration reaches the dangerous concentration, the air blower is started, and the early warning system is started at the same time, so that information is transmitted to maintenance personnel.
Because the first filter 13 can be blocked by the impurities in the rainwater and the condensed water when being used for a long time, the rainwater and the condensed water can not normally enter the water reservoir 14, at the moment, the impurities in the water can be filtered firstly by the filter screen 32 arranged in the pipeline 23, meanwhile, when the internal turbine 15 rotates, the blades 25 can also rotate, at the moment, the first magnetic block 26 intermittently passes through the second magnetic block 28, so that the first magnetic block 26 pushes the second magnetic block 28 to move up and down, at the moment, the filter screen 32 can shake, at the same time, because the filter screen 32 is obliquely arranged, the impurities on the filter screen 32 can shake to the feed chute 33 and then enter the cavity 35 for storage, so that the impurities can not be accumulated above the filter screen 32, and the blocking of meshes of the filter screen 32 is caused, so that the blocking of the impurities in the pipeline 23 can be prevented.
When the impurity in the cavity 35 stores more, can start the electro-magnet and promote the magnetic plate, at this moment the magnetic plate can promote the impurity in the cavity 35 and upwards remove, until impurity removal to spread groove 34 department, then impurity can follow the inclined plane of magnetic plate and slide to in the blown down tank 31, baffle 30 can be promoted by the magnetic plate and no longer seal the blown down tank 31 simultaneously, and at this moment impurity can be smooth discharge from the blown down tank 31 to reached the impurity that stores in the cavity 35 carries out automatic exhaust's effect.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (1)

1. A photovoltaic ecological desertification control system utilizing multi-source organic matter in-situ stony desertification improvement comprises a photovoltaic subsystem, an air water taking subsystem, a drip irrigation subsystem, a natural induced draft subsystem, a culture ditch and an organic modifier;
The method is characterized in that: the photovoltaic subsystem consists of a plurality of regularly arranged photovoltaic devices, a fixed photovoltaic array is adopted, a plurality of rows of photovoltaic plates (1) are used as a group of photovoltaic units, the photovoltaic plates (1) are fixedly installed on the ground by using a bracket, pasture (2) is planted on the ground, the pasture (2) is positioned below the photovoltaic plates, and the pasture (2) is used for preventing wind, fixing sand and feeding cattle and sheep;
The air water taking subsystem is composed of an air water taking device (3) and a water storage device (14), the air water taking device (3) is arranged at intervals under the photovoltaic panel (1), the air water taking device (3) comprises a top exposed turbine (10), an arc-shaped surface (11) with an external diversion groove (12) and a diversion hole (16) and an internal turbine (15), and the air water taking device (3) is connected with the water storage device (14) through a pipeline (23);
The drip irrigation subsystem is communicated with the water reservoir (14) and the water supply pipe network by adopting an intelligent automatic drip irrigation system (22), the intelligent automatic drip irrigation system (22) takes water in the water reservoir (14) preferentially, and when the water quantity in the water reservoir (14) is insufficient, water is taken through the water supply pipe network;
the cultivation ditch is distributed at the passage between the photovoltaic units and is divided into an overground structure and an underground structure, the overground structure is a cultivation house, the underground structure is a fermentation ditch, and the fermentation ditch adopts two sets of ventilation systems of a natural wind utilization system and an auxiliary active aeration system (20);
the photovoltaic panels (1) are installed back to the main wind direction, and the inclination angles of the photovoltaic panels (1) are the same;
in the photovoltaic unit, the installation height of the photovoltaic panel (1) is sequentially reduced along the main wind direction;
the natural wind utilization system comprises an overground air inlet (18), a ventilation pipe and an air outlet (19), wherein the overground air inlet (18) adopts a gradually-expanding structure, the position with larger section diameter faces to the main wind direction, the wind is introduced into the ventilation pipe by utilizing the narrow pipe effect, and the air outlet (19) is arranged on the side wall of the fermentation ditch at intervals; the auxiliary active aeration system (20) consists of a methane concentration sensor, a PLC control system, a blower and an early warning system;
The air water collector (3) is inserted into the ground for 2m-5m, a top exposed turbine (10) is arranged at the top end of the pipeline (23), an inner turbine (15) is arranged at the bottom end of the top exposed turbine (10), the inner turbine (15) is positioned in the pipeline (23), an arc-shaped surface (11) is arranged on the air water collector (3), a circle of external diversion trenches (12) are further arranged on the arc-shaped surface (11), a diversion port (17) is formed in each of four sides of the arc-shaped surface (11), diversion holes (16) are uniformly formed in the central part of the arc-shaped surface (11), and the diversion ports (17) and the diversion holes (16) are communicated with the pipeline (23);
The mouth part of the water reservoir (14) is provided with a first filtering piece (13), and a second filtering piece (24) is arranged at the water outlet pipe network of the water reservoir (14);
The breeding house is a main area of the cattle and sheep activity, automatic drinkers (4) for the cattle and sheep are arranged in the breeding house at intervals, and a water source is from the water reservoir (14) and a water supply network;
the automatic drinking bowl (4) for cattle and sheep adopts double control of pressing water outlet and floating ball water control;
The fermentation ditch is separated from the ground cultivation house by an isolation net (6) and can be flush with the ground or slightly lower than the ground;
The fermentation ditch is rectangular, a slope (8) inclining from the middle to two sides is arranged in the ditch, the inclination angle is 45-60 degrees, and the slope bottom of the slope (8) is connected with an arc-shaped fermentation area (9) and is a main area for aerobic fermentation of cow and sheep manure;
The fermentation ditch is separated from the peripheral sandy soil by a separation net (6), namely a closed net (7) with an oblique square grid welding structure, so that manure in the fermentation ditch can be contacted with deep soil while physical separation is realized;
A horizontal stirring paddle (21) is arranged in the arc-shaped fermentation area (9), and blades of the horizontal stirring paddle (21) are irregularly arc-shaped to form excrement 'grids';
The organic modifier is prepared from water, sand and sludge according to the proportion of 0.3-0.5: 0.2 to 0.4:1, and simultaneously assisting in the fecal sewage fermentation product; in the organic modifier, sludge is pretreated to achieve a harmless effect, a sludge composting product obtained through aerobic fermentation is adopted, the water content of the sludge is 30% -50%, the organic matter content is 30% -50%, and the pH of the sludge and the organic matter is slightly alkaline;
The inner wall of the pipeline (23) is fixedly connected with a pair of fixing plates (29), the top surface of the fixing plates (29) is fixedly connected with a circular ring (27) through a spring, the inner side wall of the top surface of the circular ring (27) is subjected to round corner treatment, the outer side wall of the circular ring (27) is attached to the pipe wall, the inner side wall of the circular ring (27) is fixedly connected with a filter screen (32) which is obliquely arranged, the surface of the internal turbine (15) is fixedly connected with a group of blades (25), the bottom surface of each blade (25) is fixedly connected with a first magnetic block (26), and the bottom surface of each filter screen (32) is fixedly connected with a group of second magnetic blocks (28) which repel the first magnetic block (26);
A cavity (35) is formed in the circular ring (27), a feeding groove (33) communicated with the cavity (35) is formed in the inner side wall of the circular ring (27), and the feeding groove (33) is parallel to the lowest point of the filter screen (32);
Inner wall sliding connection of cavity (35) has magnetic plate (36), the top surface of magnetic plate (36) is the inclined plane form, the bottom surface fixedly connected with of cavity (35) with magnetic plate (36) repulse electro-magnet (37), fixedly connected with reset spring between electro-magnet (37) and magnetic plate (36), spread groove (34) with cavity (35) intercommunication have been seted up to the lateral wall of ring (27), discharge chute (31) flush with spread groove (34) have been seted up to the lateral wall of pipeline (23), baffle (30) that have magnetic material to make through the torsional spring twist in the inside of discharge chute (31), baffle (30) and magnetic plate (36) repulse.
CN202410666071.9A 2024-05-28 2024-05-28 Photovoltaic ecological desertification control system utilizing multisource organic matter to improve in-situ stony desertification Active CN118235568B (en)

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CN106954554A (en) * 2017-05-15 2017-07-18 厦门嘉烨兴农业科技有限公司 The intelligent pig raising system of the intensive zero-emission of modernization
CN213695136U (en) * 2020-09-24 2021-07-16 青岛蓝科创新科技有限公司 Desert solar air water-taking irrigation device
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