CN205773920U - The biological treatment system of heat-engine plant desulfurized waste water - Google Patents
The biological treatment system of heat-engine plant desulfurized waste water Download PDFInfo
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- CN205773920U CN205773920U CN201620495751.XU CN201620495751U CN205773920U CN 205773920 U CN205773920 U CN 205773920U CN 201620495751 U CN201620495751 U CN 201620495751U CN 205773920 U CN205773920 U CN 205773920U
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Abstract
The utility model discloses the biological treatment system of a kind of heat-engine plant desulfurized waste water, including including the wastewater equalization pond of basic agent, elevator pump, microbiological fuel cell and artificial swamp；Wastewater equalization pond is provided with water inlet and outlet, and the outlet of wastewater equalization pond connects the water inlet of described elevator pump by pipeline, and the outlet of described elevator pump connects the water inlet of described microbiological fuel cell by pipeline；The outlet of described microbiological fuel cell connects the water inlet of described artificial swamp by pipeline；Artificial swamp connects outlet；The top of artificial swamp is less than the bottom of microbiological fuel cell.This utility model floor space is little, construction cost is low, waste water of heat-engine plant can process and make waste water reach discharge standard, and processing procedure can produce electric energy, processing procedure non-secondary pollution.
Description
Technical field
The invention belongs to field of waste water treatment, relate to the biological treatment system of a kind of heat-engine plant desulfurized waste water, process for thermal power plant wet flue gas desulfurization waste water.
Background technology
At present, Wet Flue Gas Desulfurization Technology mainly includes limestone-gypsum, sodio method, seawater method, ammonia process etc..In wet desulfurization of flue gas by limestone-gypsum method system, for maintaining system chloride equilibrium, it is ensured that desulfuration efficiency, make security of system stable operation, it is necessary to a certain amount of waste water of outer row.Because desulfurization wastewater contains the noxious pollutants such as a large amount of dissolving salts, solid suspension, heavy metal ion and hardly degraded organic substance, it is impossible to directly discharge.At present, common method for treating desulfurized wastewater has chemical precipitation method and evaporation concentration method.
Salinity after chemical precipitation method can effectively reduce the SS in desulfurization wastewater, F-, heavy metal ion etc., but the method processes is the highest, makes waste water be difficult to reclaim and can not qualified discharge.Evaporation and concentration can make desulfurization wastewater be separated into high-quality water or steam and solid waste, but investment is higher, limits the application of the method.
The principle of microbiological fuel cell is to utilize enzyme or microorganism as anode catalyst, by its metabolism, the chemical energy in Organic substance is directly translated into electric energy.It belongs to the biochemical transformation technology in biomass energy utilization technologies, converts biomass into electric energy.Microbiological fuel cell is applied in sewage disposal, obtains electric energy while sewage processing, be to alleviate current energy source crisis and the effective way of sewage pollution problem, be also one of the hot research problem in environmental energy field.
Artificial swamp is to utilize the process synergic effects such as the physics of filler, plant and microorganism, chemistry, biochemistry to complete dirty water purification, its mechanism of action includes adsorbing, is detained, filters, oxidoreduction, precipitation, microbial decomposition, conversion, residue accumulated and all kinds of protozoacide and metazoal effect, be a kind of environmentally friendly sewage water treatment method.
Utility model content
The purpose of this utility model is to provide one, and floor space is little, construction cost is low, waste water of heat-engine plant can process and make waste water reach discharge standard, and processing procedure can produce the biological treatment system of the heat-engine plant desulfurized waste water of electric energy, processing procedure non-secondary pollution.
For achieving the above object, the biological treatment system of heat-engine plant desulfurized waste water of the present utility model includes including the wastewater equalization pond of basic agent, elevator pump, microbiological fuel cell and artificial swamp；
Wastewater equalization pond is provided with water inlet and outlet, and the outlet of wastewater equalization pond connects the water inlet of described elevator pump by pipeline, and the outlet of described elevator pump connects the water inlet of described microbiological fuel cell by pipeline；The outlet of described microbiological fuel cell connects the water inlet of described artificial swamp by pipeline；Artificial swamp connects outlet；The top of artificial swamp is less than the bottom of microbiological fuel cell.
Described microbiological fuel cell includes that cylinder, cylinder bottom connect downwards and have up big and down small tubaeform water entering section, and the bottom of water entering section is provided with water inlet, and this water inlet is as the water inlet of microbiological fuel cell；The top of water entering section is provided with the orifice plate for water distribution；The first gravel layer, anode electrode layer, the second gravel layer and air cathode electrode layer it is sequentially provided with from bottom to top on described orifice plate；Described cylinder top outer wall is circumferentially arranged with the cylinder water leg of annular, and the outlet of cylinder water leg is as the outlet of microbiological fuel cell.Cylinder lateral wall at first gravel layer and the cylinder lateral wall at the second gravel layer are connected to two sample taps.
Described anode electrode layer is made up of active carbon layer embedding titanium wire network；
Described air cathode electrode layer is made up of active carbon layer embedding stainless steel cloth；The titanium wire having a diameter of 0.8 millimeter it is connected between described titanium wire network with described stainless steel cloth.
Described artificial swamp include cell body, cell body bottom surface be provided with 3% the gradient and its on be equipped with impervious barrier；With water (flow) direction as forward direction, being interval with the cloth waterwall that twice are parallel to each other in cell body from front to back, cell body is divided into the first chamber, the second chamber and the 3rd chamber by cloth waterwall from front to back；Described cloth waterwall hollow arranges and is provided with some openings outlet forward；
Impervious barrier bottom first chamber is provided with a chamber packing layer, the gravel that a chamber packing layer uses material footpath to be 80-100 millimeter；The bottom of one chamber packing layer is provided with water distributor, and water distributor rear end connects wetland water inlet pipe, and the water inlet of wetland water inlet pipe is as the water inlet of artificial swamp；Water distributor is provided with the water distributing pore of some opening upwards；
Impervious barrier bottom second chamber is provided with two chamber packing layers, and two chamber packing layers include bulky grain stone layer that particle diameter is 50-80 millimeter from the bottom to top, particle diameter is the middle granule stone layer of 20-40 millimeter and quartz sand layer that particle diameter is 5-10 millimeter；
Impervious barrier bottom 3rd chamber is provided with three chamber packing layers, and three chamber packing layers include bulky grain stone layer that particle diameter is 50-80 millimeter from the bottom to top, particle diameter is the middle granule stone layer of 20-40 millimeter and quartz sand layer that particle diameter is 5-10 millimeter；
One chamber packing layer, two chamber packing layers and three packing layer tops, chamber are equipped with overburden layer, and the overburden layer plantation of the 3rd top of chamber has phragmites communis；
A described packing layer top, chamber is provided with a chamber water leg, and the water distribution coping between a chamber water leg and the first chamber with the second chamber is connected；Described two packing layer tops, chamber are provided with two chamber water legs, and the water distribution coping between two chamber water legs and the second chamber with the 3rd chamber is connected；
Being provided with exhalant canal in the front side wall of described cell body, described three packing layer tops, chamber are provided with three chamber water legs, and three chamber water legs are connected with described exhalant canal；Connecting bottom cell body front side wall and have the outlet arranged forward, this outlet is as the outlet of artificial swamp.
The thickness of the overburden layer of the first top of chamber is 1/5th of a chamber packing layer, and the thickness of the overburden layer of the second top of chamber is 1/4th of two chamber packing layers, and the thickness of the overburden layer of the 3rd top of chamber is 1/4th of three chamber packing layers.
Described wetland water inlet pipe is through the rear wall of described cell body.
Described titanium wire is provided with outer meeting resistance.
Pipeline 5 between described biological fuel cell 3 and artificial swamp 4 is connected return duct, and the pipeline between biological fuel cell 3 and elevator pump is connected the other end of described return duct.
Wherein, the water inlet of wastewater equalization pond connects the outlet of the device producing desulfurization wastewater, for collecting desulfurization wastewater, the Acidity of Aikalinity of regulation waste water, precipitation clarification and controlling the water yield of described wastewater equalization pond water outlet；Elevator pump is for sending the water in described wastewater equalization pond into microbiological fuel cell；Described microbiological fuel cell is for removing the hardly degraded organic substance in waste water and the heavy metal in removal, enrichment waste water；Described artificial swamp is for removing COD, mineral suspensions (SS) and the residual heavy metal etc. in waste water.Waste water regulation generally uses basic agent, mainly has NaOH, CaCO3, Calx etc..
The operation principle of microbiological fuel cell is: waste water enters microbiological fuel cell, flowing into water leg after water distribution orifice plate is even into the first gravel layer, anode electrode layer, the second gravel layer and air cathode electrode layer, part effluent recycling is to microbiological fuel cell water inlet；The anaerobic sludge of inoculation produces electricity bacterium and facilitates the generation of electric current, output voltage simultaneously so that the heavy metal in soil migrates under the effect of internal electric field, and direction is for move to air cathode electrode layer from anode electrode layer, and be enriched with at air cathode electrode layer；The product electricity bacterium degradation of organic substances of anode electrode layer enrichment produces proton and electronics, an electronics part is used for reducing refractory Organic substance, a part of incoming anode, through external circuits to air cathode electrode layer, proton with solution in reactor to air cathode electrode layer, in the presence of oxygen, occur electrode reaction to generate water, complete heavy metal accumulation, hardly degraded organic substance removal and produce the overall process of electricity.
Waste water uniformly flows into the first chamber through water distributor, flow up remittance one chamber water leg, the cloth waterwall that the first chamber is middle with the second chamber is entered by a chamber water leg, after uniform distribution, forward horizontal flows into the second chamber, the cloth waterwall that the second chamber is middle with the 3rd chamber is entered after importing two chamber water legs, after uniform distribution, forward horizontal flows into the 3rd chamber, flows out artificial swamp by the outlet of exhalant canal and artificial swamp after importing three chamber water legs.
This utility model compared with prior art, has the advantage that
1) the waste water salinity after existing chemical precipitation method processes is the highest, and waste water is difficult to reclaim and can not qualified discharge；Existing evaporation concentration method but investment higher, application is restricted.This utility model simple structure, easy to operate, construction cost is low, high treating effect；
2) prior art is chemically main, and medicament used easily causes secondary pollution, and the present invention uses biological method, non-secondary pollution, environmental friendliness；
3) prior art later stage operation power consumption is relatively big, operating cost is high, and the present invention produces electric energy at process desulfurization wastewater simultaneously, it is achieved that the recycling of the energy；
4) prior art floor space is big, it is generally required to independent Factory Building, floor space of the present invention is little, and landscape effect is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of microbiological fuel cell；
Fig. 3 is the structural representation of artificial swamp.
Detailed description of the invention
Direction shown in arrow in each accompanying drawing is the direction of current at this.
As shown in Figure 1, Figure 2 and Figure 3, the biological treatment system of heat-engine plant desulfurized waste water of the present utility model includes including the wastewater equalization pond 1 of basic agent, elevator pump 2, microbiological fuel cell 3 and artificial swamp 4；
Wastewater equalization pond 1 is provided with water inlet and outlet, and the outlet of wastewater equalization pond 1 connects the water inlet of described elevator pump 2 by pipeline 5, and the outlet of described elevator pump 2 connects the water inlet of described microbiological fuel cell 3 by pipeline 5；The outlet of described microbiological fuel cell 3 connects the water inlet of described artificial swamp 4 by pipeline 5；Artificial swamp 4 connects outlet；The top of artificial swamp 4 is less than the bottom of microbiological fuel cell 3.
Described microbiological fuel cell 3 includes cylinder 6, and cylinder 6 bottom connects downwards up big and down small tubaeform water entering section 7, and the bottom of water entering section 7 is provided with water inlet, and this water inlet is as the water inlet 8 of microbiological fuel cell 3；The top of water entering section 7 is provided with the orifice plate 9 for water distribution；The first gravel layer 10, anode electrode layer, the second gravel layer 12 and air cathode electrode layer it is sequentially provided with from bottom to top on described orifice plate 9；Described cylinder 6 top outer wall is circumferentially arranged with the cylinder water leg 14 of annular, and the outlet of cylinder water leg 14 is as the outlet 11 of microbiological fuel cell 3.Cylinder 6 sidewall at first gravel layer 10 and cylinder 6 sidewall at the second gravel layer 12 are connected to two sample taps 15.
Described anode electrode layer is embedded titanium wire network 18 by active carbon layer 17 and constitutes；Activated carbon granule particle diameter is 3-5mm, and specific surface area is 300-500m2/g.The active carbon layer 17 of anode electrode layer is inoculated with anaerobic sludge, for the biofilm of system.
Described air cathode electrode layer is embedded stainless steel cloth 19 by active carbon layer 17 and constitutes；The titanium wire 20 having a diameter of 0.8 millimeter it is connected between described titanium wire network 18 with described stainless steel cloth 19.And carry out insulated enclosure process in junction point insulation rewinding.
Described artificial swamp 4 includes cell body 22, cell body 22 bottom surface along water (flow) direction be provided with 3% the gradient and its on be equipped with impervious barrier 23；With water (flow) direction as forward direction, being interval with the cloth waterwall 24 that twice are parallel to each other in cell body 22 from front to back, cell body 22 is divided into the first chamber, the second chamber and the 3rd chamber by cloth waterwall 24 from front to back；Described cloth waterwall 24 hollow arranges and is provided with some openings outlet (outlet is conventional structure, not shown outlet herein) forward；
Impervious barrier 23 bottom first chamber is provided with a chamber packing layer 25, the gravel that a chamber packing layer 25 uses material footpath to be 80-100 millimeter；The bottom of one chamber packing layer 25 is provided with water distributor 26, and water distributor 26 rear end connects wetland water inlet pipe 27, and the water inlet of wetland water inlet pipe 27 is as the water inlet of artificial swamp 4；Water distributor 26 is provided with the water distributing pore 28 of some opening upwards；
Impervious barrier 23 bottom second chamber is provided with two chamber packing layers 29, and two chamber packing layers 29 include bulky grain stone layer that particle diameter is 50-80 millimeter from the bottom to top, particle diameter is the middle granule stone layer of 20-40 millimeter and quartz sand layer that particle diameter is 5-10 millimeter；The layer structure utilizing stone, quartz sand to arrange different-grain diameter is this area routine techniques, stone layer that not shown each particle diameter is different or quartz sand layer.
Impervious barrier 23 bottom 3rd chamber is provided with three chamber packing layers 30, and three chamber packing layers 30 include bulky grain stone layer that particle diameter is 50-80 millimeter from the bottom to top, particle diameter is the middle granule stone layer of 20-40 millimeter and quartz sand layer that particle diameter is 5-10 millimeter；
One chamber packing layer 25, two chamber packing layer 29 and three chamber packing layer 30 tops are equipped with overburden layer 31, and overburden layer 31 plantation of the 3rd top of chamber has phragmites communis 32；
Described chamber packing layer 25 top is provided with a chamber water leg 33, and a chamber water leg 33 is connected with the top of the cloth waterwall 24 between the first chamber with the second chamber；Described two chamber packing layer 29 tops are provided with two chamber water legs 34, and two chamber water legs 34 are connected with the top of the cloth waterwall 24 between the second chamber with the 3rd chamber；
Being provided with exhalant canal 36 in the front side wall of described cell body 22, described three chamber packing layer 30 tops are provided with three chamber water legs 35, and three chamber water legs 35 are connected with described exhalant canal 36；Connecting bottom cell body 22 front side wall and have the outlet 37 arranged forward, this outlet 37 is as the outlet of artificial swamp 4.
The thickness of the overburden layer 31 of the first top of chamber is 1/5th of a chamber packing layer 25, and the thickness of the overburden layer 31 of the second top of chamber is 1/4th of two chamber packing layers 29, and the thickness of the overburden layer 31 of the 3rd top of chamber is 1/4th of three chamber packing layers 30.
Described wetland water inlet pipe 27 is through the rear wall of described cell body 22.Described titanium wire 20 is provided with outer meeting resistance 21.Pipeline 5 between described biological fuel cell 3 and artificial swamp 4 is connected return duct 16, and the pipeline 5 between biological fuel cell 3 with elevator pump 2 is connected the other end of described return duct 16.
Wherein, embedding is to utilize embedding medium that the material that need to embed or encapsulated by structures get up to provide performance support or chemoprotectant method, and for prior art, its concrete operation method no longer describes in detail.
Using method of the present utility model comprises the following steps:
1) desulfurization wastewater is collected to wastewater equalization pond 1, uses the Acidity of Aikalinity of basic agent (mainly having NaOH, CaCO3, Calx etc.) regulation waste water, precipitation clarification, and the supernatant is overflowed, elevator pump 2 is drawn into microbiological fuel cell 3；
2) waste water is drawn into microbiological fuel cell 3 by elevator pump 2, through bottom water distributing pore 28 plate 9 even into gravel layer, by flowing into cylinder water leg 14 after anode electrode layer, gravel layer, air cathode electrode layer, part water outlet is back to microbiological fuel cell 3 water inlet through return duct 16；The anaerobic sludge of inoculation produces electricity bacterium and facilitates the generation of electric current, output voltage simultaneously so that the heavy metal in soil migrates under the effect of internal electric field, and direction is for move to air cathode electrode layer from anode electrode layer, and be enriched with at air cathode electrode layer；The product electricity bacterium degradation of organic substances of anode electrode layer enrichment produces proton and electronics, an electronics part is used for reducing refractory Organic substance, a part of incoming anode, air cathode electrode layer is reached through titanium wire 20, proton with waste water in reactor to air cathode electrode layer, in the presence of oxygen, occur electrode reaction to generate water, complete heavy metal accumulation, hardly degraded organic substance removal and produce the overall process of electricity.
3) the non-refluxing portion of microbiological fuel cell 3 water outlet enters artificial swamp 4 by gravity flow, and waste water uniformly flows into the first chamber through water distributor 26, flows up remittance water leg, and the first chamber Main Function is that waste water carries out physical filtering, removes SS；Waste water is entered, by water leg, the cloth waterwall 24 that the first chamber is middle with the second chamber, the second chamber is flowed in the horizontal direction after uniform distribution, importing the second chamber water leg 34, the second chamber is mainly reduced salinity in waste water, absorption residual heavy metal by the ion exchange of multistage filler, Adsorption And Retention, chelation, is removed SS further；Waste water enters the cloth waterwall 24 that the second chamber is middle with the 3rd chamber, after uniform distribution, transversely (i.e. horizontal direction) flows into the 3rd chamber, flowing into exhalant canal 36 after importing the 3rd chamber water leg 35, the 3rd chamber, mainly by root system of plant Absorption, reduces COD content and residual content of beary metal in waste water.
Above example is only in order to illustrative not limiting the technical solution of the utility model, although this utility model being described in detail with reference to above-described embodiment, it will be understood by those within the art that: still this utility model can be modified or equivalent, without deviating from any modification or partial replacement of spirit and scope of the present utility model, it all should be contained in the middle of right of the present utility model.
Claims (8)
- The biological treatment system of the most heat-engine plant desulfurized waste water, it is characterised in that: include including the wastewater equalization pond of basic agent, elevator pump, microbiological fuel cell and artificial swamp；Wastewater equalization pond is provided with water inlet and outlet, and the outlet of wastewater equalization pond connects the water inlet of described elevator pump by pipeline, and the outlet of described elevator pump connects the water inlet of described microbiological fuel cell by pipeline；The outlet of described microbiological fuel cell connects the water inlet of described artificial swamp by pipeline；Artificial swamp connects outlet；The top of artificial swamp is less than the bottom of microbiological fuel cell.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to claim 1, it is characterized in that: described microbiological fuel cell includes cylinder, cylinder bottom connects downwards up big and down small tubaeform water entering section, the bottom of water entering section is provided with water inlet, and this water inlet is as the water inlet of microbiological fuel cell；The top of water entering section is provided with the orifice plate for water distribution；The first gravel layer, anode electrode layer, the second gravel layer and air cathode electrode layer it is sequentially provided with from bottom to top on described orifice plate；Described cylinder top outer wall is circumferentially arranged with the cylinder water leg of annular, and the outlet of cylinder water leg is connected to two sample taps as the outlet of microbiological fuel cell, the cylinder lateral wall at the first gravel layer and the cylinder lateral wall at the second gravel layer.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to claim 2, it is characterised in that: described anode electrode layer is made up of active carbon layer embedding titanium wire network；Described air cathode electrode layer is made up of active carbon layer embedding stainless steel cloth；The titanium wire having a diameter of 0.8 millimeter it is connected between described titanium wire network with described stainless steel cloth.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to any one of claim 1 to 3, it is characterised in that: described artificial swamp include cell body, cell body bottom surface be provided with 3% the gradient and its on be equipped with impervious barrier；With water (flow) direction as forward direction, being interval with the cloth waterwall that twice are parallel to each other in cell body from front to back, cell body is divided into the first chamber, the second chamber and the 3rd chamber by cloth waterwall from front to back；Described cloth waterwall hollow arranges and is provided with some openings outlet forward；Impervious barrier bottom first chamber is provided with a chamber packing layer, the gravel that a chamber packing layer uses material footpath to be 80-100 millimeter；The bottom of one chamber packing layer is provided with water distributor, and water distributor rear end connects wetland water inlet pipe, and the water inlet of wetland water inlet pipe is as the water inlet of artificial swamp；Water distributor is provided with the water distributing pore of some opening upwards；Impervious barrier bottom second chamber is provided with two chamber packing layers, and two chamber packing layers include bulky grain stone layer that particle diameter is 50-80 millimeter from the bottom to top, particle diameter is the middle granule stone layer of 20-40 millimeter and quartz sand layer that particle diameter is 5-10 millimeter；Impervious barrier bottom 3rd chamber is provided with three chamber packing layers, and three chamber packing layers include bulky grain stone layer that particle diameter is 50-80 millimeter from the bottom to top, particle diameter is the middle granule stone layer of 20-40 millimeter and quartz sand layer that particle diameter is 5-10 millimeter；One chamber packing layer, two chamber packing layers and three packing layer tops, chamber are equipped with overburden layer, and the overburden layer plantation of the 3rd top of chamber has phragmites communis；A described packing layer top, chamber is provided with a chamber water leg, and the water distribution coping between a chamber water leg and the first chamber with the second chamber is connected；Described two packing layer tops, chamber are provided with two chamber water legs, and the water distribution coping between two chamber water legs and the second chamber with the 3rd chamber is connected；Being provided with exhalant canal in the front side wall of described cell body, described three packing layer tops, chamber are provided with three chamber water legs, and three chamber water legs are connected with described exhalant canal；Connecting bottom cell body front side wall and have the outlet arranged forward, this outlet is as the outlet of artificial swamp.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to claim 4, it is characterized in that: the thickness of the overburden layer of the first top of chamber is 1/5th of a chamber packing layer, the thickness of the overburden layer of the second top of chamber is 1/4th of two chamber packing layers, and the thickness of the overburden layer of the 3rd top of chamber is 1/4th of three chamber packing layers.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to claim 4, it is characterised in that: described wetland water inlet pipe is through the rear wall of described cell body.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to claim 3, it is characterised in that: described titanium wire is provided with outer meeting resistance.
- The biological treatment system of heat-engine plant desulfurized waste water the most according to any one of claim 1 to 3, it is characterized in that: the pipeline 5 between described biological fuel cell 3 and artificial swamp 4 is connected return duct, and the pipeline between biological fuel cell 3 and elevator pump is connected the other end of described return duct.
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| CN201620495751.XU CN205773920U (en) | 2016-05-28 | 2016-05-28 | The biological treatment system of heat-engine plant desulfurized waste water |
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| CN201620495751.XU CN205773920U (en) | 2016-05-28 | 2016-05-28 | The biological treatment system of heat-engine plant desulfurized waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228851A (en) * | 2019-03-22 | 2019-09-13 | 中国环境科学研究院 | A kind of drawer type microorganism battery coupling artificial wet land system |
| CN110590072A (en) * | 2019-10-08 | 2019-12-20 | 南京霄祥工程技术有限公司 | Zero-emission treatment process and system for power plant desulfurization wastewater |
-
2016
- 2016-05-28 CN CN201620495751.XU patent/CN205773920U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228851A (en) * | 2019-03-22 | 2019-09-13 | 中国环境科学研究院 | A kind of drawer type microorganism battery coupling artificial wet land system |
| CN110590072A (en) * | 2019-10-08 | 2019-12-20 | 南京霄祥工程技术有限公司 | Zero-emission treatment process and system for power plant desulfurization wastewater |
| CN110590072B (en) * | 2019-10-08 | 2022-02-22 | 广东山美环境科技有限公司 | Zero-emission treatment process and system for power plant desulfurization wastewater |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190528 |