CN212403875U - Clear water runoff production slope protection system - Google Patents
Clear water runoff production slope protection system Download PDFInfo
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- CN212403875U CN212403875U CN202021041669.2U CN202021041669U CN212403875U CN 212403875 U CN212403875 U CN 212403875U CN 202021041669 U CN202021041669 U CN 202021041669U CN 212403875 U CN212403875 U CN 212403875U
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Abstract
The utility model provides a clear water runoff-producing slope protection system, including the escape canal, the catch basin that communicates with the escape canal, the domatic turf-soil system of arranging along the domatic, the wetland modular unit of arranging according to the topography trend of bank protection from domatic top of slope to slope foot, the bottom and the top of catch basin are equipped with the water distribution main pipe of catch basin intercommunication, the slope flow outlet pipe respectively, slope flow outlet pipe and domatic turf-soil system intercommunication, the turbidity control pumping system is installed to the water inlet end of water distribution main pipe, be used for according to the water turbidity value control in the catch basin that detects whether the water in the catch basin gets into the water distribution main pipe; the main water distribution pipe is connected with the branch water distribution pipes arranged at the upper part of the wetland module unit. The utility model discloses before non-point source runoff sewage flows in the water, can separately handle initial stage rainwater and middle and later stage rainwater and through the way of difference, realize effective interception and the purification of non-point source pollutant, the current serious problem of non-point source pollution of river lake of alleviating and control that can be better.
Description
Technical Field
The utility model relates to a river lake non-point source pollution control and ecological bank protection design, construction technical field specifically are a clear water production flow bank protection system.
Background
Non-point source pollution, as a typical non-point source pollution, means that rainwater and runoff formed by the rainwater flow through the ground in the rainfall process, a series of pollutants are gathered and then enter a water body to pollute surface water and underground water mainly comprising rivers and lakes, and the non-point source pollution has the characteristics of wide regional range, strong randomness, complex cause and the like, and the control of the runoff pollution is one of the key points of current water environment research. With the improvement of the economic level of China, urban drainage pipe network systems and sewage treatment plants are continuously built or upgraded, and the runoff pollution is controlled to a certain degree. However, most rural, suburban, urban and unmodified rural villages lack or even lack drainage systems. In dry seasons, in areas without drainage systems, most domestic sewage is directly discharged into nearby rivers and lakes through open channels; in rainy season, even with moderate intensity rainfall, runoff contamination of large amounts of miscellaneous domestic sewage can exceed the retention and transport capacity of the pipeline, or in the absence of a pipeline system, flow directly into the receiving water through a runoff trunk drain. The runoff pollution in the river carries a large amount of solid particles, organic matters, nitrogen, phosphorus and other nutrient salts, and the eutrophication of the receiving water body is caused, so that the ecological system is deteriorated.
In recent years, a series of ecological restoration projects and technologies, such as river aeration, artificial wetlands, artificial floating islands, bottom mud passivation, ecological water regulation, bypass ecological filter beds for treating eutrophic water bodies and the like, are increasingly applied to water bodies polluted by runoff and eutrophicated. However, these measures are all emergency and remedial measures after the water body is polluted by a series of measures, and most of the measures are treatment measures outside original projects such as river regulation, bank protection construction and the like, and how to combine bank slope regulation in river planning, effective treatment and control before non-point source pollution is discharged into the water body is the key to solve the current problem of river and lake pollution. The ecological slope protection is widely popularized and applied as a non-point source pollution interception technology with simple structure, low treatment cost and landscape effect.
The utility model discloses earlier, the ecological bank protection system of relevant river lake also has multiple method, like the ecological bank protection of complete series, divide into a plurality of regions in proper order from the toe to the top of a slope promptly, utilize different plants to carry out ecological bank protection, including benthophyte, emergent aquatic plants, wet living herbaceous and arbor bush etc. its advantage is that the bank protection is effectual, engineering technical requirement is not high, easily realizes, and the view heterology is high, the bank afforestation is neat pleasing to the eye, has kept the habitat and the biological diversity of former bank. However, such ecological slope protection method is not suitable for constructing ideal ecological slope protection on steep and large-scoured slopes, especially for cities with small and precious soil, the river slope cannot be constructed with such a wide bank, and therefore, the construction of relatively ideal ecological slope protection is greatly limited, and the operability is poor, and the construction is basically difficult to realize. For the semi-series ecological slope protection technology, namely, a concrete stone revetment is arranged at the junction of the water surface and the slope bank when the water level of a riverway is normal, the vertical stone revetment is directly contacted with the water body in the slope protection method, and the concrete stone revetment just cuts off the connection between water and land, influences the habitat of aquatic organisms and objectively influences the urban landscape effect. The method has the advantages of poor landscape effect, blockage of land-water connection and no interception and purification effect on river surface source runoff pollutants for the hardened slope banks on the two sides.
Most importantly, almost all constructed revetments of riverways or lakes at present can not separate initial rainwater with highest pollutant content from cleaner intermediate and later stage rainwater, or pure slope runoff has low interception and purification efficiency on surface source pollution, or pure wetlands, ditches and the like can not separately treat initial heavy polluted rainwater and intermediate and later stage light polluted runoff.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem that exists on above-mentioned technique and application, the view effect is taken into account to the synthesis, factor such as effective interception that amphibious connectivity and pair runoff pollute, a clear water runoff producing ecological bank protection system is proposed, this processing method is as a simple structure, the treatment cost is low and purify and view effectual non point source pollution interception and processing technique, can separately handle initial stage rainwater and middle and later stage rainwater through different ways before non point source runoff sewage flows into the water, realize the interception and the purification of pollutant, can effectually alleviate and control current river lake receives the serious problem of non point source pollution, and bury embedded design for ground, do not additionally take up an area, do not influence other view construction on river lake both sides.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a clear water runoff-producing slope protection system comprises drainage ditches positioned on two sides of a road, a water collecting tank positioned on the outer sides of the drainage ditches and communicated with the drainage ditches, and a slope surface turf-soil system arranged along a slope surface, wherein a water distribution main pipe and a slope surface runoff outlet pipe which are communicated with the water collecting tank are respectively arranged at the bottom and the top of the water collecting tank, the slope surface runoff outlet pipe is communicated with the water collecting tank and the slope surface turf-soil system, a turbidity control pumping system is installed at the water inlet end of the water distribution main pipe, and the turbidity control pumping system is used for controlling whether water in the water collecting tank enters the water distribution main pipe or not according to the detected turbidity value of the; the wetland modular units are sequentially installed and arranged from the slope top to the slope foot of the slope according to the terrain trend of the slope protection, wetland fillers are filled in the wetland modular units, and the adjacent wetland modular units are mutually communicated; the main water distribution pipe is connected with the branch water distribution pipes, the branch water distribution pipes are arranged inside the slope protection turf in the slope turf-soil system along the slope surface and laid on the upper surface of the wetland filler, and the branch water distribution pipes are provided with water distribution holes.
Furthermore, a water turbidity on-line tester is arranged in the turbidity control pumping system and used for detecting the turbidity value of the water body, when the turbidity value of the water body is not less than 150NTU, the turbidity control pumping system is started, initial rainwater enters the water distribution main pipe, when the turbidity value of the water body is less than 150NTU, the turbidity control pumping system is closed, the water level in the water collecting tank rises to the position of the slope flow water outlet pipe, and then flows through the slope turf-soil system along with the slope flow water outlet pipe.
Further, the catch basin structure is concrete catch basin, carbon steel catch basin or PE catch basin, the top of catch basin 1 covers there is prefabricated apron, prefabricated apron is metal cover plate or resin apron or high strength fiber cement concrete apron.
Further, the water collecting tank is connected with the drainage ditch through the side drainage rain grate.
Furthermore, a pipeline type filter screen is further installed at the water inlet end of the water distribution main pipe, and the diameter of filter holes of the pipeline type filter screen is 2mm-5 mm.
Further, the turbidity control pumping system is connected with a solar power supply system arranged on one side of a road through a power supply-signal integration line.
Further, the turbidity control pumping system is connected with a solar power supply system arranged on one side of a road through a power supply-signal integration line.
Furthermore, the bottom of each wetland modular unit is provided with an emptying branch pipe, water inlet holes are formed in the periphery of the emptying branch pipe, the diameter of each water inlet hole is not smaller than 5mm and not larger than 10mm, each emptying branch pipe is connected with an emptying main pipe, the emptying main pipe is arranged below the emptying branch pipe along a slope surface, and a valve is arranged on the emptying main pipe.
Furthermore, the distance between the two water collecting ponds along the river course is 10m-30 m.
Furthermore, the length-width ratio of the wetland module unit is not more than 2:1, and the wetland module unit is a wetland module made of a carbon steel tank body or a PE tank body material.
Compared with the prior art, the beneficial effects and advantages of the utility model reside in that:
1. the system of the utility model is characterized in that the initial rainwater and the middle and later stage rainwater can be separately processed, thereby improving the processing efficiency and the service life of the bank slope processing system;
2. the system of the utility model is provided with a coupling system for intelligent monitoring of water turbidity and opening and closing of the pumping system, which can realize automatic control and water distribution of the pumping system according to the non-point source pollution characteristics and has the characteristics of intellectualization, accurate control and the like;
3. the utility model can flow through different series treatment units from top to bottom aiming at the initial non-point source polluted water body, so as to create different anaerobic and aerobic areas in the system, and the removal effect of pollutants such as nitrogen, phosphorus, heavy metal and the like in the sewage is obvious;
4. the device of the utility model has compact structure, free construction and combination according to the concrete conditions of different river and lake revetment, low construction cost, short construction time, strong runoff sewage impact resistance, easy operation and stable operation;
5. the system is constructed in a sinking type and an embedded type, and main structures are buried under the ground surface, so that the land occupation is not additionally occupied, and the slope landscape effect is not influenced; the system can be designed in a modularized way and can be replaced according to the service life, the service life and the like of the filler;
6. the utility model discloses a heavily polluted area source runoff of initial stage is through wetland unit intensive processing, pollutes the middle and later stage rainwater that is lighter and purifies the back water of intaking through domatic runoff, has both guaranteed that the clear water is produced the interception of flow system to most income river income lake surface source pollutant, has alleviateed the operating pressure of wetland unit again, improves processing system's life.
7. The utility model discloses to like rural area, town and the urban village that does not reform transform etc. lack and do not have drainage system's area, intercept and purify before runoff sewage is received the water through scouring the dry ditch or domatic confluence entering, and not be used for having received the pollution and to the purification of eutrophication water, more have the effect and the meaning of "effecting a permanent cure".
Drawings
Fig. 1 is a cross-sectional view of one embodiment of the fresh water runoff-generating slope protection system of the present invention;
fig. 2 is a partial enlarged view of one embodiment of the fresh water runoff producing slope protection system of the present invention.
In the figure: the system comprises 1-drainage ditch, 2-prefabricated cover plate, 3-water collecting tank, 4-side drainage rain grate, 5-pipeline type filter screen, 6-turbidity control pumping system, 7-power supply-signal integration line, 8-solar power supply system, 9-slope flow water outlet pipe, 10-main water distribution pipe, 11-branch water distribution pipe, 12-water outlet hole, 13-branch emptying pipe, 14-main emptying pipe, 15-wetland module unit, 16-wetland filler and 17-slope turf-soil system.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, one of the embodiments of the fresh water runoff-generating slope protection system of the present invention includes a drainage ditch 1, a prefabricated cover plate 2, a water collecting tank 3, a side drainage rain grate 4, a pipeline type filter screen 5, a turbidity control pumping system 6, a power-signal integration line 7, a solar power supply system 8, a slope surface runoff outlet pipe 9, a main water distribution pipe 10, a branch water distribution pipe 11, a water outlet hole 12, a branch evacuation pipe 13, a main evacuation pipe 14, a wetland module unit 15, wetland filler 16, and a slope surface turf-soil system 17.
The drainage ditch 1 is located the both sides of road for collect road surface rainfall runoff. The catch basin 3 is located the outside in escape canal 1, and its structure is concrete catch basin or carbon steel catch basin or PE catch basin, catch basin 3 is arranged rainwater through the side and is combed 4 and link to each other with escape canal 1, and 1 rainwater of collecting is arranged rainwater through the side in the escape canal and is combed 4 inflow catch basin 3, the volume of catch basin 3 is calculated according to road ponding area, perennial rainfall, bank protection area etc. and is confirmed, follows the river course in principle and moves towards the distance between two catch basins 3 and be 10m-30 m. The top of the water collecting tank 1 is covered with a prefabricated cover plate 2, and the prefabricated cover plate 2 is a metal cover plate or a resin cover plate or a high-strength fiber cement concrete cover plate.
The main water distribution pipe 10 is located on the side wall of the water collecting tank 3, the main water distribution pipe 10 is located at the bottom of the water collecting tank 3, for example, at a third of the height of the water collecting tank 3, and the specific location can be set according to actual needs. Turbidity control pumping system 6 and pipeline formula filter screen 5 are installed to the end of intaking that the water distribution is responsible for 10, the filtration pore diameter size of pipeline formula filter screen 5 is 2mm-5mm, turbidity control pumping system 6 links to each other with the solar energy power supply system 8 of installing in road one side through power-signal integration line 7, and solar energy power supply system 8 provides working power supply for turbidity control pumping system 6 through power-signal integration line 7.
The slope surface outflow pipe 9 is positioned at the top of the water collecting tank 3, a slope surface turf-soil system 17 is arranged along the slope surface, and the slope surface outflow pipe 9 is communicated with the water collecting tank 3 and the slope surface turf-soil system 17.
The turbidity control pumping system 6 is internally provided with a water turbidity on-line tester which can detect the turbidity value of the water body at any time, when the turbidity value of the water body is not less than 150NTU, the turbidity control pumping system 6 is started, initial rainwater enters the water distribution main pipe 10, when the turbidity value of the water body is less than 150NTU, the turbidity control pumping system 6 is closed, the water level in the water collecting tank 3 rises to the position of the slope surface flow water outlet pipe 9, and flows through the slope surface turf-soil system 17 along with the slope surface flow water outlet pipe 9.
The length-width ratio of the wetland module unit 15 is not more than 2:1, the wetland module unit is a wetland module made of a carbon steel tank body or a PE tank body or other common materials, and modular installation and splicing can be realized; the wetland modular units 15 are sequentially installed and arranged from the slope top to the slope foot of the slope according to the terrain trend of the slope protection, the whole wetland modular units are positioned in the slope protection, namely buried underground, and the bottom of the wetland modular units 15 is tamped by original soil; common wetland fillers 16 are filled in the wetland modular unit 15, and the particle size of each grade of wetland filler is decreased from the top of a slope to the bottom of the slope. Taking the embodiment shown in fig. 1 as an example, the wetland module units 15 are provided with five stages in total, from the top of a slope to the bottom of the slope, the grain size of the wetland filler filled in the first-stage wetland module is not less than 25mm and not more than 35mm, the grain size of the wetland filler in the second-stage wetland module is not less than 15mm and not more than 25mm, the grain size of the wetland filler in the third-stage wetland module is not less than 10mm and not more than 15mm, the grain size of the filler in the fourth-stage wetland module is not less than 5mm and not more than 10mm, and the grain size of the filler in the fifth-stage and lower wetland modules is not less than 2mm and not more.
The outer side of each wetland module unit 15 connected with the next wetland module unit 15 is provided with a water outlet 12, and the water outlet 12 is used for runoff sewage to flow from the previous unit to the next unit. An emptying branch pipe 13 is arranged at the bottom of each wetland modular unit 15, water inlet holes are formed in the periphery of the emptying branch pipe 13, and the diameter of each water inlet hole is not less than 5mm and not more than 10 mm. Each evacuation branch pipe 13 is connected to an evacuation main pipe 14, and the evacuation main pipe 14 is arranged along the slope below the evacuation branch pipe 13. When the wetland is blocked, the valve on the main discharge hole pipe 14 can be opened to discharge water in the wetland module unit 15, so that the maintenance and the replacement of the filler are convenient.
The water distribution branch pipes 11 are connected with the main water distribution pipe 10, and the water distribution branch pipes 11 are distributed along the slope. The water distribution holes are arranged at the positions which are obliquely downward from the two sides of the water distribution branch pipes 11 and are one third of the height of the pipe bottom, and the diameter of each water distribution hole is 5mm-10 mm. The water distribution branch pipes 11 are laid in slope protection turf in a slope turf-soil system 17 and laid on the upper surface of the wetland filler 16.
The utility model discloses application method of clear water runoff yield slope protection system, its step includes:
A. after being collected by the drainage ditch 1, the road surface runoff sewage flows into the water collecting tank 3 after being filtered by the side drainage rain grate 4 to remove the dead branches, patrinia leaves and other large individual impurities, and the initial stage non-point source sewage enters the water collecting tank 3 and then is subjected to preliminary sedimentation and retention,
B. the water level rises continuously, when the turbidity control pumping system 6 is submerged, a water body turbidity on-line measuring instrument installed in the turbidity control pumping system 6 is touched, the initial rainwater water body turbidity and the pollutant concentration are generally higher, when the water body turbidity value is greater than 150NTU, the turbidity control pumping system 6 is started, the initial non-point source sewage enters the water distribution main pipe 10, flows into different wetland module units 15 uniformly through the water distribution branch pipe 11, is adsorbed, co-precipitated and microorganism and the like by the wetland filler 16 to remove and intercept pollutants in the non-point source sewage, and finally flows into the receiving water body;
C. along with the advancing of the rainfall process, the turbidity of the rainwater on the road surface and the concentration of pollutants gradually decrease, when the turbidity value of the water body is less than 150NTU, the turbidity control pumping system 6 is closed, the water level in the water collecting tank rises to the position of the slope surface flow water outlet pipe 9, the water flows through the slope surface turf-soil system 17 of the slope protection along with the water outlet pipe, and the water enters the receiving water body such as a river channel or a lake after being intercepted and purified by turf and soil.
Will the utility model relates to a clear water production flow bank protection system is applied to the ecological bank protection of town river course of a no drainage pipe network in Poyang lake basin and is founded, slope protection area 100m 23 heavy rains (rainfall 35mm in 24 hours) or heavy rains (rainfall 55mm in 24 hours) were continuously conducted in months 6 to 7, and the average treatment effect was as shown in Table l.
Table 1 table of 3 rainfall average treatment effect of fresh water runoff-generating slope protection system
The utility model discloses the device has realized separately dealing with initial stage heavy pollution rainwater and middle and later stage light pollution runoff, can effectively alleviate and control current river lake receive the serious problem of non-point source pollution, carries out interception and purification before runoff sewage flows in the receiving water, not only saves the cost but also has the effect of "effecting a permanent cure". The utility model discloses can be applied to in lake, river, pond and landscape water's ecological bank protection founds, water environment quality improves and the view construction engineering.
The above description is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a clear water production bank protection system which characterized in that: the water distribution and drainage system comprises drainage ditches (1) positioned on two sides of a road, a water collection tank (3) positioned on the outer side of the drainage ditches (1) and communicated with the drainage ditches (1), and a slope surface turf-soil system (17) arranged along a slope surface, wherein a water distribution main pipe (10) and a slope surface outflow pipe (9) communicated with the water collection tank (3) are respectively arranged at the bottom and the top of the water collection tank (3), the slope surface outflow pipe (9) is communicated with the water collection tank (3) and the slope surface turf-soil system (17), a turbidity control pumping system (6) is arranged at the water inlet end of the water distribution main pipe (10), and the turbidity control pumping system (6) is used for controlling whether water in the water collection tank (3) enters the water distribution main pipe (10) or not according to the detected turbidity value; the wetland modular units (15) are sequentially installed and arranged from the slope top to the slope foot of the slope according to the terrain trend of the slope protection, wetland fillers (16) are filled in the wetland modular units (15), and the adjacent wetland modular units (15) are mutually communicated; the main water distribution pipe (10) is connected with the branch water distribution pipes (11), the branch water distribution pipes (11) are arranged inside the slope protection turf in the slope surface turf-soil system (17) along the slope surface and laid on the upper surface of the wetland filler (16), and the branch water distribution pipes (11) are provided with water distribution holes.
2. The fresh water runoff generating slope protection system of claim 1, wherein: the on-line measuring instrument for the turbidity of the water body is arranged in the turbidity control pumping system (6) and used for detecting the turbidity value of the water body, when the turbidity value of the water body is not less than 150NTU, the turbidity control pumping system (6) is opened, initial rainwater enters the main water distribution pipe (10), when the turbidity value of the water body is less than 150NTU, the turbidity control pumping system (6) is closed, the water level in the water collecting tank (3) rises to the position of the slope flow water outlet pipe (9), and flows through the slope turf-soil system (17) along with the slope flow water outlet pipe (9).
3. The fresh water runoff generating slope protection system of claim 1, wherein: the catch basin (3) structure is concrete catch basin, carbon steel catch basin or PE catch basin, the top of catch basin 1 covers there is prefabricated apron (2), prefabricated apron (2) are metal cover plate or resin apron or high strength fiber cement concrete apron.
4. The fresh water runoff generating slope protection system of claim 1, wherein: the water collecting tank (3) is connected with the drainage ditch (1) through the side drainage rain grate (4).
5. The fresh water runoff generating slope protection system of claim 1, wherein: the water distribution main pipe (10) is characterized in that a pipeline type filter screen (5) is further installed at the water inlet end, and the diameter of filter holes of the pipeline type filter screen (5) is 2-5 mm.
6. The fresh water runoff generating slope protection system of claim 1, wherein: the turbidity control pumping system (6) is connected with a solar power supply system (8) arranged on one side of a road through a power supply-signal integration line (7).
7. The fresh water runoff generating slope protection system of claim 1, wherein: the outer side of each wetland module unit (15) connected with the next wetland module unit (15) is provided with a water outlet (12), and the water outlet (12) is used for runoff sewage to flow from the last wetland module unit (15) to the next wetland module unit (15).
8. The fresh water runoff generating slope protection system of claim 1, wherein: the bottom of every wetland modular unit (15) is provided with evacuation branch pipe (13), and the inlet opening has been seted up all around evacuation branch pipe (13), and the inlet opening diameter is not less than 5mm and is not more than 10mm, and every evacuation branch pipe (13) and evacuation are responsible for (14) and link to each other, and the evacuation is responsible for (14) and arranges in evacuation branch pipe (13) below along domatic, is equipped with the valve on the evacuation is responsible for (14).
9. The fresh water runoff generating slope protection system of claim 1, wherein: the distance between the two water collecting tanks (3) along the river course is 10m-30 m.
10. The fresh water runoff generating slope protection system of claim 1, wherein: the length-width ratio of the wetland module unit (15) is not more than 2:1, and the wetland module unit is a wetland module made of a carbon steel tank body or a PE tank body material.
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| CN111646645A (en) * | 2020-06-09 | 2020-09-11 | 长江水利委员会长江科学院 | Clear water runoff production slope protection system and application method thereof |
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