CN114772720A - Upflow bioreactor based on sulfur autotrophic UAD and backwashing method - Google Patents
Upflow bioreactor based on sulfur autotrophic UAD and backwashing method Download PDFInfo
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- CN114772720A CN114772720A CN202210298554.9A CN202210298554A CN114772720A CN 114772720 A CN114772720 A CN 114772720A CN 202210298554 A CN202210298554 A CN 202210298554A CN 114772720 A CN114772720 A CN 114772720A
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- 238000011001 backwashing Methods 0.000 title claims abstract description 33
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 230000001651 autotrophic effect Effects 0.000 title claims abstract description 25
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 24
- 239000011593 sulfur Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 181
- 239000010802 sludge Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims description 44
- 239000000945 filler Substances 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 238000012856 packing Methods 0.000 claims description 9
- 239000010865 sewage Substances 0.000 abstract description 13
- 230000001174 ascending effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 5
- 238000012851 eutrophication Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 241000605118 Thiobacillus Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to the technical field of sewage treatment and denitrification, and discloses an upflow bioreactor based on sulfur autotrophic UAD (upflow anaerobic sludge blanket) and a backwashing method. The reactor can control the stability of the ascending flow rate by controlling the size of the circulating water quantity, thereby realizing the stability of the system. Through the control of reasonable backwashing conditions, effective backwashing operation can be realized. The invention has the advantages of strong load resistance, high denitrification effect, excellent effluent quality and the like.
Description
Technical Field
The invention relates to the technical field of sewage Denitrification treatment, and discloses a sulfur Autotrophic based UAD (Up-flow automatic Denitrification) upflow bioreactor and a backwashing method.
Background
The eutrophication of water bodies is a global phenomenon in recent decades and is influenced by human activities, and the eutrophication tends to be caused by the increase of the discharge amount of nutrient elements in water bodies such as rivers, lakes and the like. When the eutrophication of the water body occurs, some algae erupt to cause the water quality to be poor in oxygen and worsen, fishy smell is filled everywhere, the stability of the water body ecological system is damaged, and the urban water supply and drinking safety is seriously influenced. The root cause of water eutrophication is the increase of the nutrient elements of nitrogen and phosphorus. Secondary treatment effluent water of urban sewage plants and high nitrate nitrogen industrial wastewater are main sources of sewage nitrogen element discharge.
Biological denitrification mainly utilizes biological nitrification and denitrification to convert organic nitrogen and ammonia nitrogen in wastewater into nitrogen gas to be discharged, thereby achieving the aim of denitrification. The addition of carbon sources and the microbial denitrifying bacteria in the biological denitrification method are all factors for denitrification, and the carbon sources commonly used at present comprise low-carbon organic matters such as methanol, ethanol, acetic acid, glucose and the like. Therefore, high operation cost, secondary pollution, etc. are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an upflow bioreactor based on sulfur autotrophic UAD. The flora in the bioreactor is obligate inorganic chemoautotrophic thiobacillus, and the metabolic process is to utilize elemental sulfur (S) and sulfide (S) in the oxygen-free or oxygen-deficient environment2-) When the nitrate is taken as an electron acceptor, the nitrate is taken as an electron donor to transfer the nitrate Nitrogen (NO)3 -) Reduction to nitrogen (N)2) And meanwhile, the sulfur is oxidized into sulfate in an autotrophic denitrification process. The device uses the sulfur powder electron donor, does not need to add an organic carbon source, can meet the resource utilization, can achieve the aim of denitrification, and is suitable for the denitrification treatment of high nitrate nitrogen industrial wastewater and the denitrification upgrading of municipal sewage secondary effluent.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to an upflow bioreactor based on sulfur autotrophic UAD (upflow anaerobic sludge bed), which comprises a reactor body, a water inlet unit, a biomembrane reaction unit and a water production tank, wherein the reactor body is provided with a water inlet pipe and a water outlet pipe;
the water inlet unit penetrates through a water inlet of the reactor body and extends into the reactor body, and is used for supplying water into the reactor body; the water inlet of the reactor body is positioned on the side surface of the reactor body and is close to the bottom;
the biomembrane reaction unit is positioned in the reactor body and is used for carrying out denitrification reaction with the sewage;
the backwashing water outlet of the reactor body is arranged at the upper part of the reactor body and is flush with the water outlet of the reactor body;
the water production tank is provided with a water production tank circulation port, the water production tank circulation port is arranged on the side face of the water production tank and is close to the bottom, the water production tank circulation port is connected with the water inlet of the reactor body through a circulation water pipe, and the circulation water pipe is provided with a circulation pump for adding the water production circulation of the reactor into the reactor.
When the upflow bioreactor is normally used, sewage enters the reactor body from the bottom of the reactor body through the water inlet unit, and after the sewage and the biofilm reaction unit are subjected to denitrification reaction, produced water is discharged from the water outlet of the reactor body; when the upflow bioreactor needs to be cleaned, the water inlet unit is closed, the circulating pump is opened, the water in the water production tank is used for cleaning the biomembrane reaction unit in the bioreactor, and the water is discharged from the backwashing water outlet of the bioreactor body.
Furthermore, the biomembrane reaction unit comprises a filler and a porous plate, the porous plate is horizontally arranged in the reactor body and is used for supporting the filler, and the size of the pores of the porous plate is smaller than that of the filler;
when the reactor body normally operates, the area where the filler is fixed in the reactor body is the filler layer, and the height of the filler layer is 70% of the total height of the reactor body. During backwashing, the filler expands, the region which can be reached after the filler expands is an expansion layer, and the backwashing expansion rate of the filler layer is about 10 percent. The flow rate of backwashing can be controlled by adjusting the flow rate of the circulating pump.
Further, the water inlet unit comprises a water inlet pipe, a pipeline mixer and a water inlet pump. The water inlet pump and the pipeline mixer are both arranged on the water inlet pipe, the water inlet pipe penetrates through the water inlet of the reactor body and extends into the reactor body, and the pipeline mixer is used for mixing a medicament and inlet water, wherein the medicament is sulfur powder; and adding sulfur powder into the reactor through a water inlet pipe at fixed time intervals or according to the reaction process, so that the denitrifying bacteria on the filler and the sewage are subjected to autotrophic denitrification reaction in the reactor.
Furthermore, the upflow bioreactor based on the sulfur autotrophic UAD further comprises a water distributor which is positioned in the reactor body and is connected with the water inlet unit. Is used for uniformly distributing inlet water and circulating water.
Furthermore, the delivery port of reactor body is provided with out the water filter screen, prevents that the filler from running off through the delivery port of reactor body, and is specific, and the delivery port is fixed at the reactor delivery port through flange joint's mode to the play water filter screen.
Furthermore, the water inlet of the water production tank is connected with the water outlet of the reactor body, and the water inlet of the water production tank is arranged at the top of the water production tank. And meanwhile, a water outlet of the production water tank is arranged on the production water tank, the side surface of the production water tank is close to the top, and a drainage port of the production water tank is arranged on the production water tank and is close to the bottom.
The invention relates to a backwashing method of an upflow bioreactor based on sulfur autotrophic UAD, which is characterized in that water in a water production tank reaches the bottom of a reactor body through a circulating water pipe and a water inlet of the reactor body, water flows to the bottom and the top for backwashing, and backwashing water is discharged from a backwashing water outlet. The filler expands during backwashing, and the expansion rate is about 10 percent.
Has the beneficial effects that: the operation cost is low. Different from the traditional heterotrophic denitrification mode for sewage treatment, the sulfur autotrophic denitrification is a novel biological denitrification technology, and the technology does not need to add an organic carbon source, utilizes a sulfur simple substance as an electron donor and utilizes inorganic carbon as a carbon source, and realizes the removal of nitrate nitrogen.
(1) The denitrification efficiency is high. The sulfur autotrophic denitrification benefits from the characteristics of a biofilm method, and the reactor is filled with the filler with a large specific surface area, so that the concentration of the sulfur autotrophic denitrification bacteria is greatly increased, and the nitrogen removal efficiency is high.
(2) The reactor maintains the stability of the ascending flow rate through the inflow water and the circulating water, and the ascending flow rate of the system can be maintained at a certain level by changing the circulating water quantity when the inflow water or the inflow water quality is changed, so that the overall operation stability of the system is high.
Drawings
FIG. 1 is a schematic diagram of the present invention.
The meaning of the individual reference symbols in the figures is: 1. a water inlet pump; 2. a pipeline mixer; 3. a water inlet of the reactor body; 4. a filler; 5. a perforated plate; 6. a water distributor; 7. a circulation pump; 8. a circulation port of the water production tank; 9. a water production tank; 10. backwashing the water outlet; 11. a water outlet of the reactor body; 12. an intumescent layer; 13. a water outlet filter screen; 14. emptying the water production tank; 15. a water outlet of the water production tank; 16. a water inlet of the water production tank; 17. and a pressure transmitter.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
the invention relates to an upflow bioreactor based on sulfur autotrophic UAD (upflow anaerobic sludge blanket), which is shown in figure 1 and comprises a reactor body, a water inlet unit, a biomembrane reaction unit and a water production tank 9;
the water inlet unit penetrates through the water inlet 3 of the reactor body and extends into the reactor body, and the water inlet 3 of the reactor body is positioned on the side surface of the reactor body and is close to the bottom; the water inlet unit comprises a water inlet pipe, a pipeline mixer 2 and a water inlet pump 1. The water inlet pump 1 and the pipeline mixer 2 are both arranged on the water inlet pipe, and the pipeline mixer 2 is used for mixing a medicament with inlet water, wherein the medicament is sulfur powder; sulfur powder is added into the reactor through a water inlet pipe at regular intervals or according to the reaction process, so that the denitrifying bacteria on the filler 4 and the sewage are subjected to autotrophic denitrification reaction in the reactor.
The biomembrane reaction unit is positioned in the reactor body and is used for carrying out denitrification reaction with the sewage; the biomembrane reaction unit comprises a filler 4 and a porous plate 5, wherein the porous plate 5 is horizontally arranged in the reactor body and used for supporting the filler 4, and the pore size of the porous plate 5 is smaller than that of the filler 4. When the reactor body normally operates, the area where the filler 4 is fixed in the reactor body is the filler layer, and the height of the filler layer is 70 percent of the total height of the device. During backwashing, the filler 4 expands, the area which can be reached after the filler 4 expands is an expansion layer 12, and the backwashing expansion rate of the filler layer is about 10 percent. The flow rate of backwashing can be controlled by adjusting the flow rate of the circulation pump 7.
The water inlet 16 of the water production tank is connected with the water outlet 11 of the reactor body, and the water inlet 16 of the water production tank is arranged at the top of the water production tank. Meanwhile, a water outlet 15 of the water production tank is also arranged on the water production tank 9 and is positioned on the side surface of the water production tank 9 close to the top, and a water production tank emptying port 14 is also arranged on the water production tank 9 and is positioned on the side surface of the water production tank 9 close to the bottom; the water outlet 11 of the reactor body is provided with a water outlet filter screen 13, so that the filler 4 is prevented from running off through the water outlet 11 of the reactor body, and specifically, the water outlet filter screen 13 is fixed at the water outlet 11 of the reactor body in a flange connection manner.
A backwashing water outlet 10 of the reactor body is arranged at the upper part of the reactor body and is flush with a water outlet 11 of the reactor body; a circulating port 8 of the water production tank is connected with the water inlet 3 of the reactor body through a circulating water pipe, and a circulating pump 7 is arranged on the circulating water pipe and used for circularly adding the water produced by the reactor into the reactor; the water production tank circulation port 8 is arranged on the side surface of the water production tank 9 and is close to the bottom. The water inlet pipe is also connected with a water distributor 6 which is positioned in the reactor body and used for uniformly distributing inlet water and circulating water.
Based on the device, denitrifying bacteria need to be cultured and domesticated in the early stage, and the culturing and domesticating can be carried out in a UAD bioreactor or can be separately cultured and then placed in the reactor. Inoculating sludge adopted by sludge culture in the UAD reactor, and using nitrogenous wastewater to culture and start; after the sludge is cultured for about two weeks, sulfur is added into the reactor in the UAD bioreactor through a water inlet pipe for enrichment culture, and denitrification sludge with autotrophic property is domesticated and cultured. During the culture period, nutrient solution is added at regular intervals or according to the reaction process and is replaced, and the main components of the nutrient solution are nitrogen-containing wastewater, corresponding alkali liquor and a medicament, namely the medicament sulfur powder.
When the upflow bioreactor of the invention is in normal operation for treating sewage, the inlet water passes through the inlet pump 1 and is positioned at the water inlet 3 to be converged with the circulating water, enter the water distributor 6 and uniformly enter the bottom in the bioreactor through the water distributor 6. In the reactor, water flows from bottom to top through the packing layer and flows out of a water outlet 11 of the upper reactor body to enter the water production tank 9, and denitrification reaction occurs when the water flows through the packing layer. In the process, the stability of the ascending flow speed in the reactor is ensured by controlling the quantity of the circulating water.
Still be connected with pressure transmitter 17 on the reactor body, after operation a period, the microorganism that dies away accumulates gradually, leads to the flux of water to reduce, and then 17 data increase of pressure transmitter of reactor bottom are when certain numerical value. At the moment, the water inlet pump 1 is closed, the circulating pump 7 is opened, water flows to the lower part and the upper part for backwashing, the filler 4 expands during backwashing to be in a suspension state, the expansion rate is about 10%, and simultaneously, dead microorganisms are discharged from the backwashing water outlet 10 along with backwashing water, so that the purpose of backwashing is achieved.
Claims (10)
1. An upflow bioreactor based on sulfur autotrophic UAD (upflow anaerobic sludge blanket) is characterized by comprising a reactor body, a water inlet unit, a biomembrane reaction unit and a water production tank;
the water inlet unit penetrates through the water inlet of the reactor body and extends into the reactor body, and the water inlet of the reactor body is positioned on the side surface of the reactor body and is close to the bottom;
the biomembrane reaction unit is positioned in the reactor body and is used for generating denitrification reaction;
a backwashing water outlet of the reactor body is arranged at the upper part of the reactor body;
the water production tank is provided with a water production tank circulation port, the water production tank circulation port is arranged on the side surface of the water production tank and is close to the bottom, and the water production tank circulation port is connected with the water inlet of the reactor body through a circulation water pipe.
2. An upflow bioreactor as in claim 1, in which the sulfur autotrophic UAD based biofilm reaction unit includes packing and perforated plates horizontally disposed within the reactor body for supporting the packing, the perforated plates having a hole size smaller than the packing size.
3. An upflow bioreactor based on sulfur autotrophic UAD as claimed in claim 2, wherein the area in the reactor body where the packing is fixed is the packing layer, and the height of the packing layer is 70% of the total height of the reactor body.
4. The upflow bioreactor based on sulfur autotrophic UAD as claimed in claim 1, wherein the water intake unit comprises a water intake pipe, a pipe mixer and a water intake pump, both of which are disposed on the water intake pipe; the water inlet pipe penetrates through the water inlet of the reactor body and extends into the reactor body.
5. The upflow bioreactor based on sulfur autotrophic UAD as claimed in claim 1, further comprising a water distributor inside the reactor body connected to the water inlet unit.
6. The upflow bioreactor based on sulfur autotrophic UAD as claimed in claim 1, wherein the water outlet of the reactor body is provided with a water outlet screen to prevent the filler from being discharged from the water outlet of the reactor body.
7. The upflow bioreactor based on sulfur autotrophic UAD as claimed in claim 1, wherein the water inlet of the water production tank is connected with the water outlet of the reactor body.
8. The upflow bioreactor based on sulfur autotrophic UAD as in claim 1, wherein the reactor body is further connected with a pressure transducer.
9. The method for backwashing a sulfur autotrophic UAD-based upflow bioreactor according to claim 2, wherein the water from the water production tank is passed through the circulating water pipe and the water inlet of the reactor body to the bottom of the reactor body, and the water flows down and up for backwashing, and the backwashing water is discharged from the backwashing water outlet.
10. A method for backwashing a sulfur-autotrophic UAD-based upflow bioreactor according to claim 9, wherein the packing expands at about 10% during backwashing.
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| CN202210298554.9A CN114772720A (en) | 2022-03-25 | 2022-03-25 | Upflow bioreactor based on sulfur autotrophic UAD and backwashing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003402A (en) * | 2023-08-30 | 2023-11-07 | 中国环境科学研究院 | Method for treating perchlorate in wastewater by sulfur autotrophic coupling heterotrophic reducing bacteria |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467111A (en) * | 2018-04-10 | 2018-08-31 | 清华大学 | A kind of autotrophic denitrification deep denitrogenation device and autotrophy deep denitrification method |
| CN112919732A (en) * | 2021-01-26 | 2021-06-08 | 中电环保股份有限公司 | UAD biological filter tower system based on sulfur autotrophy and denitrification method |
| CN112939222A (en) * | 2021-03-09 | 2021-06-11 | 东北大学 | System and method for treating wastewater by virtue of stirring type single-stage synergistic denitrification |
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- 2022-03-25 CN CN202210298554.9A patent/CN114772720A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467111A (en) * | 2018-04-10 | 2018-08-31 | 清华大学 | A kind of autotrophic denitrification deep denitrogenation device and autotrophy deep denitrification method |
| CN112919732A (en) * | 2021-01-26 | 2021-06-08 | 中电环保股份有限公司 | UAD biological filter tower system based on sulfur autotrophy and denitrification method |
| CN112939222A (en) * | 2021-03-09 | 2021-06-11 | 东北大学 | System and method for treating wastewater by virtue of stirring type single-stage synergistic denitrification |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117003402A (en) * | 2023-08-30 | 2023-11-07 | 中国环境科学研究院 | Method for treating perchlorate in wastewater by sulfur autotrophic coupling heterotrophic reducing bacteria |
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