CN202558739U - Rural life wastewater resource processing device - Google Patents
Rural life wastewater resource processing device Download PDFInfo
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- CN202558739U CN202558739U CN2012202045446U CN201220204544U CN202558739U CN 202558739 U CN202558739 U CN 202558739U CN 2012202045446 U CN2012202045446 U CN 2012202045446U CN 201220204544 U CN201220204544 U CN 201220204544U CN 202558739 U CN202558739 U CN 202558739U
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- gas
- sewage
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- buried anaerobic
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- 238000012545 processing Methods 0.000 title claims description 30
- 239000002351 wastewater Substances 0.000 title description 2
- 239000010865 sewage Substances 0.000 claims abstract description 50
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005273 aeration Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 18
- 238000004064 recycling Methods 0.000 claims description 8
- 239000010802 sludge Substances 0.000 claims description 8
- 239000011449 brick Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims 2
- 238000004140 cleaning Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 239000011574 phosphorus Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 9
- 238000010992 reflux Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000000630 rising effect Effects 0.000 description 8
- 238000012856 packing Methods 0.000 description 7
- 101150054854 POU1F1 gene Proteins 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 241000216843 Ursus arctos horribilis Species 0.000 description 3
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 241000684239 Canna x generalis Species 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
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
本实用新型公开了一种农村生活污水资源化处理装置，包括沼气池、格栅预处理单元、地埋式厌氧池、好氧生物滤塔以及潜流人工湿地。所述沼气池（1）与储气罐（2）之间、储气罐（2）与气压调节器（3）之间、气压调节器（3）与气体循环泵（4）之间均通过气体管道连接；所述格栅处理单元（6）和地埋式厌氧池（7）之间、地埋式厌氧池（7）和塔式生物滤池（8）之间、塔式生物滤池（8）和潜流人工湿地（9）之间均通过污水管道（13）连接；所述进水管（14）设于格栅处理单元（6）的前端；所述曝气装置（15）设于地埋式厌氧池（7）内的底部。采用本实用新型可有效去除有机物并高效脱除氮磷，占地面积小，运行成本低，因地制宜，实现了废物资源化利用。
The utility model discloses a rural domestic sewage resource treatment device, which comprises a methane pool, a grid pretreatment unit, a buried anaerobic pool, an aerobic biological filter tower and an artificial wetland with subsurface flow. Between the biogas digester (1) and the gas storage tank (2), between the gas storage tank (2) and the air pressure regulator (3), and between the air pressure regulator (3) and the gas circulation pump (4) are passed through Gas pipeline connection; between the grid treatment unit (6) and the buried anaerobic tank (7), between the buried anaerobic tank (7) and the tower biofilter (8), tower biological The filter tank (8) and the subsurface constructed wetland (9) are connected through a sewage pipe (13); the water inlet pipe (14) is arranged at the front end of the grid treatment unit (6); the aeration device (15) It is located at the bottom of the buried anaerobic tank (7). Adopting the utility model can effectively remove organic matter and efficiently remove nitrogen and phosphorus, has small floor area, low operating cost, adapts measures to local conditions, and realizes waste resource utilization.
Description
Technical field
The utility model relates to field of environment engineering, especially relates to a kind of domestic sewage in rural areas by using processing equipment for recycling.
Background technology
In recent years, along with the rapid raising of China's development of countryside and rural area living standards of the people, the quantity discharged of domestic sewage in rural areas by using constantly increases, and domestic sewage in rural areas by using has become the another severe contamination source that is only second to municipal effluent.Meanwhile, because the rural area source of pollution disperse and be wide, sewage quantity is few; And limited by natural condition; Domestic sewage in rural areas by using has dispersion, characteristics such as easily collecting not, lays comparatively difficulty of sewage collecting pipe network on a large scale, makes domestic sewage in rural areas by using can not include the large-scale centralized Sewage Plant in and concentrates and handle; The harmless treatment rate of domestic sewage in rural areas by using is very low, can only seek the sewage water treatment method and the technology that comparatively are fit to of high-level efficiency less energy-consumption with suiting measures to local conditions.
Domestic sewage in rural areas by using is handled technology commonly used and is mainly contained biochemical treatment system (anaerobism, anoxic, aerobic) and ecological treatment system at present, is main with unpowered anaerobic biological treatment, soil processing, artificial wetland process mainly.This serial of methods exists drawbacks such as the removal effect of nitrogen phosphorus in poor processing effect in long, winter residence time, the waste water is not good.Exist the running cost height such as simple biochemical treatment system, be difficult to adapt to the Rural areas economic situation, and the Ecological Disposal technology also exists the situation of seasonal poor processing effect such as winter.Therefore, existing domestic sewage in rural areas by using treatment technology is not enough, nitrogen phosphorus discharges too much is the direct inducement that causes present domestic sewage in rural areas by using eutrophication to be on the rise.
In order to adapt to the characteristics of Rural areas; The developing direction that domestic sewage in rural areas by using is handled is the reinforced anaerobic biochemical treatment system; Or adopt aeration aerating and modes such as sewage lifting, mixed-liquor return combine; Make full use of ecological treatment system simultaneously, with abundant reduction running cost and reduce the maintenance management difficulty.Simultaneously, current research shows: under anaerobic, methane carries out the nitrate salt denitrogenation as carbon source and sulfate reduction is feasible, and can keep higher denitrification percent.
Summary of the invention
The purpose of the utility model is to overcome existing deficiency, solves the domestic sewage in rural areas by using poor processing effect, and the problem that working cost is high provides a kind of efficient low-consume, and pollution treatment efficient is high, the domestic sewage in rural areas by using processing equipment for recycling that environmental benefit is good.
The utility model adopts the scheme of following technology for realizing above-mentioned purpose:
A kind of domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit, gas-holder, air pressure regulator, gas recycle pump, gas pipeline, grid processing unit, buried anaerobic pond, tower biological filter, drowned flow artificial wet land, lift pump, under meter, reflux pump, sewer line, water inlet pipe, aerating apparatus, biologic packing material, wetland plant, rising pipe; Between said methane-generating pit and the gas-holder, between gas-holder and the air pressure regulator, all be connected between air pressure regulator and the gas recycle pump through gas pipeline; Between said grid processing unit and the buried anaerobic pond, between buried anaerobic pond and the tower biological filter, all connect between tower biological filter and the drowned flow artificial wet land through sewer line; Said water inlet pipe is located at the front end of grid processing unit; Said aerating apparatus is located at the bottom in the buried anaerobic pond, and aerating apparatus is connected with gas recycle pump through gas pipeline; Gas pipeline between said air pressure regulator and the gas recycle pump is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond; Said lift pump is located on the sewer line between buried anaerobic pond and the tower biological filter; Said under meter is located on the sewer line between tower biological filter and the drowned flow artificial wet land; Sewer line between tower biological filter and the under meter is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond, and reflux pump is located on the branch sewer; Said wetland plant is located on the drowned flow artificial wet land, and said rising pipe is located at the tail end of drowned flow artificial wet land.
Buried anaerobic pond is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
Methane in the gas-holder originates from methane-generating pit, and the rural area often has methane-generating pit, can a part of methane that produce be stored in the gas tank, passes through the air pressure regulator dominant discharge when to be used;
The gas of aerating apparatus aeration is methane.Buried anaerobic pond utilizes aerating apparatus, gas recycle pump and gas pipeline to carry out aeration through the mode of circulation methane.
Hydraulic detention time is 20 ~ 30 hours in the buried anaerobic pond, and its seed sludge is from local sewage work anaerobic activated sludge.
The grid processing unit is a underground type, and fine fack is installed in its water inlet place, and the fine fack angle of inclination is the 40-60 degree, and the grizzly bar gap is the 20-40 millimeter.
Biologic packing material in the said tower biological filter is the micropore biofilter material; For sewage being come in contact and with the micropore biofilter material with the given pace micropore biofilter material of flowing through; Keep decontamination effect improving simultaneously, tap density is 600 ~ 1200g/cm3, and the particle diameter of micropore biofilter material is 25 ~ 40 millimeters.
Compared with prior art, the utlity model has following beneficial effect:
1, this device is provided with methane-generating pit, grid pretreatment unit, buried anaerobic pond, aerobe filter tower, drowned flow artificial wet land, can efficiently remove organism and phosphorus and nitrogen in the domestic sewage in rural areas by using.
2, grid processing unit and buried anaerobic pond adopt underground type, help Winter protection, alleviate the influence of temperature.
3, the methane of methane-generating pit generation under anaerobic can carry out denitrification and sulfate reduction, utilizes methane as the biochemical treatment of carbon source reinforced anaerobic, and keeps higher denitrification percent, suits measures to local conditions, and realizes the changing waste into resources utilization.
4, because methane has the effect of heating, can improve the processing efficiency of buried anaerobic pond and tower biological filter simultaneously, effect is remarkable.
5, the utility model is provided with filter back mixed-liquor return, can effectively improve the clearance of COD, ammonia nitrogen and total nitrogen, guarantees effluent quality and system stable operation.
6, this device adopts robotization control, and convenient operation and management is easy to safeguard, only needs to arrange the special messenger regularly the foreign material in grid exit to be cleared up, and regularly water pump, system etc. is checked and is safeguarded.
Description of drawings
Fig. 1 is the structural representation of the utility model domestic sewage in rural areas by using processing equipment for recycling.
Among the figure: 1 is that methane-generating pit, 2 is that gas-holder, 3 is that air pressure regulator, 4 is that gas recycle pump, 5 is that gas pipeline, 6 is that grid processing unit, 7 is that buried anaerobic pond, 8 is that tower biological filter, 9 is that drowned flow artificial wet land, 10 is that lift pump, 11 is that under meter, 12 is that reflux pump, 13 is that sewer line, 14 is that water inlet pipe, 15 is that aerating apparatus, 16 is that biologic packing material, 17 is that wetland plant, 18 is a rising pipe.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed description.
Embodiment 1
A kind of domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit 1, gas-holder 2, air pressure regulator 3, gas recycle pump 4, gas pipeline 5, grid processing unit 6, buried anaerobic pond 7, tower biological filter 8, drowned flow artificial wet land 9, lift pump 10, under meter 11, reflux pump 12, sewer line 13, water inlet pipe 14, aerating apparatus 15, biologic packing material 16, wetland plant 17, rising pipe 18; Between methane-generating pit 1 and the gas-holder 2, between gas-holder 2 and the air pressure regulator 3, all be connected between air pressure regulator 3 and the gas recycle pump 4 through gas pipeline; Between grid processing unit 6 and the buried anaerobic pond 7, between buried anaerobic pond 7 and the tower biological filter 8, all connect between tower biological filter 8 and the drowned flow artificial wet land 9 through sewer line 13; Water inlet pipe 14 is located at the front end of grid processing unit 6; Aerating apparatus 15 is located at the bottom in the buried anaerobic pond 7, and aerating apparatus 15 is connected with gas recycle pump 4 through gas pipeline; Gas pipeline between air pressure regulator 3 and the gas recycle pump 4 is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond 7; Lift pump 10 is located on the sewer line between buried anaerobic pond 7 and the tower biological filter 8; Under meter 11 is located on the sewer line between tower biological filter 8 and the drowned flow artificial wet land 9; Sewer line between tower biological filter 8 and the under meter 11 is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond 7, and reflux pump 12 is located on the branch sewer; Wetland plant 17 is located on the drowned flow artificial wet land 9, and rising pipe 18 is located at the tail end of drowned flow artificial wet land 9.
Buried anaerobic pond 7 is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
Methane in the gas-holder 2 originates from methane-generating pit 1, and through air pressure regulator 3 dominant discharge;
The gas of aerating apparatus 15 aerations is methane.Buried anaerobic pond 7 utilizes aerating apparatus 15, gas recycle pump 4 and gas pipeline 5 to carry out aeration through the mode of circulation methane.
Hydraulic detention time is 20 ~ 30 hours in the buried anaerobic pond 7, and its seed sludge is from local sewage work anaerobic activated sludge.
Grid processing unit 6 is a underground type, and fine fack is installed in its water inlet place, and the fine fack angle of inclination is the 40-60 degree, and the grizzly bar gap is the 20-40 millimeter.
Biologic packing material 16 in the tower biological filter 8 is the micropore biofilter material, and tap density is 600 ~ 1200g/cm3, and the particle diameter of micropore biofilter material is 25 ~ 40 millimeters.
Embodiment 2
A kind of domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit 1, gas-holder 2, air pressure regulator 3, gas recycle pump 4, gas pipeline 5, grid processing unit 6, buried anaerobic pond 7, tower biological filter 8, drowned flow artificial wet land 9, lift pump 10, under meter 11, reflux pump 12, sewer line 13, water inlet pipe 14, aerating apparatus 15, biologic packing material 16, wetland plant 17, rising pipe 18; Between methane-generating pit 1 and the gas-holder 2, between gas-holder 2 and the air pressure regulator 3, all be connected between air pressure regulator 3 and the gas recycle pump 4 through gas pipeline; Between grid processing unit 6 and the buried anaerobic pond 7, between buried anaerobic pond 7 and the tower biological filter 8, all connect between tower biological filter 8 and the drowned flow artificial wet land 9 through sewer line 13; The front end of grid processing unit 6 is provided with water inlet pipe 14; Aerating apparatus 15 is located at the bottom in the buried anaerobic pond 7; And aerating apparatus 15 is connected with gas recycle pump 4 through gas pipeline; Gas pipeline between air pressure regulator 3 and the gas recycle pump 4 is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond 7; Lift pump 10 is located on the sewer line between buried anaerobic pond 7 and the tower biological filter 8; Sewer line between tower biological filter 8 and the drowned flow artificial wet land 9 is provided with under meter 11; Sewer line between tower biological filter 8 and the under meter 11 is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond 7, and branch sewer is provided with reflux pump 12; Wetland plant 17 is located on the drowned flow artificial wet land 9, and the tail end of drowned flow artificial wet land 9 is provided with rising pipe 18.
Buried anaerobic pond 7 is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
Methane in the gas-holder 2 originates from methane-generating pit 1, and through air pressure regulator 3 dominant discharge;
Buried anaerobic pond 7 utilizes aerating apparatus 15, gas recycle pump 4 and gas pipeline 5 to carry out aeration through the mode of circulation methane, and hydraulic detention time is 24 hours, and its seed sludge is from local sewage work anaerobic activated sludge.
Grid processing unit 6 is a underground type, and fine fack is installed in its water inlet place, and the fine fack angle of inclination is 60 degree, and the grizzly bar gap is 40 millimeters.
Biologic packing material 16 in the tower biological filter 8 is the micropore biofilter material, and tap density is 1000g/cm
3, the particle diameter of micropore biofilter material is 40 millimeters.
Domestic sewage in rural areas by using is handled and is adopted this device.During real work, when domestic sewage in rural areas by using water inlet CODcr concentration is 350mg/L, NH
3-N concentration is 32mg/L, and TN concentration is 59mg/L, when TP concentration is 3mg/L; Treatment sewage is from water inlet pipe (14) entering, through getting into buried anaerobic pond (7) after the pre-treatment of grid processing unit (6), organism in decomposition and the removal water under the anerobes effect; Utilize methane to carry out denitrification and sulfate reduction for carbon source simultaneously, carry out aeration through the mode of circulation methane, the aeration rate of methane is 2L/h; Stop after 24 hours, get into tower biological filter (8) through lift pump (10) sewage and further remove organism and nitrogen phosphorus, water is back to buried anaerobic pond (7) through reflux pump (12) after the filter of tower biological filter (8); Reflux ratio is 100%, and the treatment sewage removal efficiency of nitrogen and phosphorus is higher, when water outlet is comparatively limpid, stop backflow; Let the water outlet of tower biological filter (8) get into further dephosphorization of drowned flow artificial wet land (9); Simultaneously nitrogen is had certain removal, wetland plant (17) is a Canna generalis Bailey, and drowned flow artificial wet land (9) adopts pebbles and blast-furnace slag to fill; Sewage is finally flowed out by the rising pipe (18) of drowned flow artificial wet land (9) tail end; Through this apparatus processes water outlet CODcr concentration later is 33mg/L, and clearance is 90.6%, NH
3-N concentration is 4mg/L, and clearance is 87.5%, and TN concentration is 9mg/L, and clearance is 84.7%, and TP concentration is 0.6mg/L, and clearance is 80.0%, the treat effluent qualified discharge.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202045446U CN202558739U (en) | 2012-05-09 | 2012-05-09 | Rural life wastewater resource processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202045446U CN202558739U (en) | 2012-05-09 | 2012-05-09 | Rural life wastewater resource processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202558739U true CN202558739U (en) | 2012-11-28 |
Family
ID=47208416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202045446U Expired - Lifetime CN202558739U (en) | 2012-05-09 | 2012-05-09 | Rural life wastewater resource processing device |
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| Country | Link |
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| CN (1) | CN202558739U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701448A (en) * | 2012-05-09 | 2012-10-03 | 河海大学 | Rural domestic sewage reutilization treatment device |
| CN103253823A (en) * | 2013-05-02 | 2013-08-21 | 中国农业大学 | Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland |
| CN104529088A (en) * | 2015-01-05 | 2015-04-22 | 李华 | Sectional type integration rural sewage processing device without power consumption |
| CN106396250A (en) * | 2016-05-20 | 2017-02-15 | 高节义 | Zero discharge facility for domestic sewage treatment in urban residential areas |
| CN108503145A (en) * | 2018-04-27 | 2018-09-07 | 中国科学院测量与地球物理研究所 | A kind of integrated half buried rural area casual household sewage treatment unit |
| CN108996827A (en) * | 2018-08-10 | 2018-12-14 | 武汉理工大学 | A kind of sewage plant Tailwater Depth nitrogen rejection facility based on methane oxidation |
| CN110590055A (en) * | 2019-07-29 | 2019-12-20 | 岭南水务集团有限公司 | Rural sewage treatment system |
| WO2020000214A1 (en) * | 2018-06-26 | 2020-01-02 | 江苏宏大环保科技有限公司 | Wastewater recycling treatment apparatus |
-
2012
- 2012-05-09 CN CN2012202045446U patent/CN202558739U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701448A (en) * | 2012-05-09 | 2012-10-03 | 河海大学 | Rural domestic sewage reutilization treatment device |
| CN103253823A (en) * | 2013-05-02 | 2013-08-21 | 中国农业大学 | Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland |
| CN104529088A (en) * | 2015-01-05 | 2015-04-22 | 李华 | Sectional type integration rural sewage processing device without power consumption |
| CN106396250A (en) * | 2016-05-20 | 2017-02-15 | 高节义 | Zero discharge facility for domestic sewage treatment in urban residential areas |
| CN108503145A (en) * | 2018-04-27 | 2018-09-07 | 中国科学院测量与地球物理研究所 | A kind of integrated half buried rural area casual household sewage treatment unit |
| CN108503145B (en) * | 2018-04-27 | 2023-11-10 | 中国科学院精密测量科学与技术创新研究院 | Integrated semi-buried rural household domestic sewage treatment device |
| WO2020000214A1 (en) * | 2018-06-26 | 2020-01-02 | 江苏宏大环保科技有限公司 | Wastewater recycling treatment apparatus |
| CN108996827A (en) * | 2018-08-10 | 2018-12-14 | 武汉理工大学 | A kind of sewage plant Tailwater Depth nitrogen rejection facility based on methane oxidation |
| CN108996827B (en) * | 2018-08-10 | 2021-06-08 | 武汉理工大学 | Sewage plant tail water deep denitrification device based on methane oxidation |
| CN110590055A (en) * | 2019-07-29 | 2019-12-20 | 岭南水务集团有限公司 | Rural sewage treatment system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121128 Effective date of abandoning: 20130703 |
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| RGAV | Abandon patent right to avoid regrant |