CN108706728B - Courtyard type constructed wetland sewage treatment system - Google Patents
Courtyard type constructed wetland sewage treatment system Download PDFInfo
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- CN108706728B CN108706728B CN201810935843.9A CN201810935843A CN108706728B CN 108706728 B CN108706728 B CN 108706728B CN 201810935843 A CN201810935843 A CN 201810935843A CN 108706728 B CN108706728 B CN 108706728B
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- constructed wetland
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- 239000010865 sewage Substances 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 34
- 238000004062 sedimentation Methods 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 12
- 241000196324 Embryophyta Species 0.000 claims description 10
- 229910021536 Zeolite Inorganic materials 0.000 claims description 10
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 10
- 239000010457 zeolite Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 7
- 235000005273 Canna coccinea Nutrition 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 4
- 241000233948 Typha Species 0.000 claims description 4
- 210000005056 cell body Anatomy 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 240000008555 Canna flaccida Species 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 5
- 239000011574 phosphorus Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000010802 sludge Substances 0.000 description 8
- 244000005700 microbiome Species 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 5
- 239000011575 calcium Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241000234587 Canna Species 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910017119 AlPO Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- 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
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a courtyard type constructed wetland sewage treatment system which comprises a constructed wetland tank body, wherein the constructed wetland tank body is divided into an anaerobic biochemical tank and a sedimentation tank through a vertical partition board, a filter screen is arranged at the lower part of the vertical partition board, an inclined pipe sedimentation device is arranged at the middle part of the sedimentation tank, suspended filler is put into the anaerobic biochemical tank, the anaerobic biochemical tank is communicated with a water inlet pipe, a horizontal partition board is arranged at the middle part of the anaerobic biochemical tank, constructed wetland is arranged on the anaerobic biochemical tank, the constructed wetland comprises a filler layer paved on the horizontal partition board and wetland plants planted on the filler layer, a water collecting pipe is arranged in the filler layer at one end of the constructed wetland, a water distribution pipe is horizontally arranged at the other end of the constructed wetland, and the inlet end of the water distribution pipe penetrates through the upper part of the vertical partition board. The device has the advantages of simple and compact structure, reasonable layout, high removal rate of organic matters, ammonia nitrogen, phosphorus and SS, and simple use and maintenance.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a courtyard type constructed wetland sewage treatment system.
Background
The application of the constructed wetland sewage treatment system begins in the beginning of the 70 s of the 20 th century, and sewage is purified mainly through the combined action of matrixes, plants and microorganisms. The constructed wetland is simple in operation, maintenance and management, and the wetland plants can be matched with peripheral landscapes to beautify the environment, so that the constructed wetland is very suitable for treating decentralized sewage in rural areas, tourist attractions, expressway service areas and the like.
At present, most towns in China are built with a sewage collection pipe network and a matched sewage treatment plant, and urban residents produce domestic sewage to be treated and discharged after reaching standards. But the sewage treatment in vast rural areas is still in the starting stage, and the environment-friendly situation is serious. Residents in rural areas are scattered, and terrains are complex, so that construction of sewage pipe networks in rural areas is limited. Therefore, developing a practical courtyard type sewage treatment process is very important for treating rural scattered sewage, and the sewage treatment process is used for treating the sewage of each village on site without building a complex sewage pipe network.
Disclosure of Invention
Aiming at the problems, the invention provides the courtyard type constructed wetland sewage treatment system, which can greatly reduce suspended matters entering the constructed wetland, has more uniform water distribution and can effectively prevent blockage.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a courtyard type constructed wetland sewage treatment system, includes constructed wetland cell body, the constructed wetland cell body divide into anaerobic biochemical pond and sedimentation tank through vertical baffle, vertical baffle lower part is equipped with the filter screen, the sedimentation tank middle part is equipped with the pipe chute sediment device, throw into suspension filler in the anaerobic biochemical pond, anaerobic biochemical pond is linked together with the inlet tube, and the middle part is equipped with horizontal baffle, be equipped with the constructed wetland on the horizontal baffle, the constructed wetland includes the wetland plant of planting on packing layer and the packing layer of horizontal baffle upper strata, is equipped with the collector pipe in the packing layer of constructed wetland one end, and the other end level sets up the water distribution pipe, the water distribution pipe is higher than the packing layer, and vertical baffle upper portion is worn to locate by the entrance point of water distribution pipe.
According to the scheme, the artificial wetland is vertically provided with the cleaning pipe, the bottom of the cleaning pipe is communicated with the horizontal partition plate, and the top of the cleaning pipe is higher than the packing layer.
According to the scheme, the baffle plate is arranged in the middle of the artificial wetland to divide the artificial wetland into two parts, and a gap is reserved between the bottom of the baffle plate and the horizontal baffle plate.
According to the scheme, the packing layer is divided into two layers from bottom to top, wherein the lower layer is a zeolite and light ceramsite composite layer, and the upper layer is a river sand layer.
According to the scheme, the particle size of the filler of the zeolite and light ceramsite composite layer is 1.0-2.5 cm, and the thickness of the filler layer is 30cm; the grain diameter of the river sand layer is 0.5-1.0 cm, and the thickness of the packing layer is 20cm.
According to the scheme, the water distribution pipe comprises a plurality of horizontally arranged perforated pipes, the distance between two adjacent perforated pipes is 30-50 cm, the perforated pipes are provided with holes in the directions of 45 degrees and 135 degrees in the section of the perforated pipe, the aperture is 0.5-0.8 cm, and the distance between the holes is 10cm.
According to the scheme, the water collecting pipe is provided with holes in the directions of +/-45 degrees and +/-135 degrees of the cross section, the aperture is 0.5-0.8 cm, and the distance between the holes is 10cm.
According to the scheme, the wetland plant is one or more of canna, typha and reed.
According to the scheme, the water collecting pipes are UPVC pipes.
The beneficial effects of the invention are as follows: 1. the yard type constructed wetland sewage treatment system is characterized in that suspended filler is added into an anaerobic biochemical tank, so that the yard type constructed wetland sewage treatment system has the advantages of large specific surface area, good hydrophilicity, high biological activity and quick membrane formation, and can rapidly improve the microorganism content in the anaerobic biochemical tank and the anaerobic biochemical efficiency; 2. the inclined pipe filler is added in the sedimentation tank to separate mud from water of sewage subjected to anaerobic biochemical treatment, so that the suspended matter content of the sewage is reduced, the blockage of the wetland filler can be relieved, and the service life of the wetland operation is prolonged; 3. the water distribution pipe adopts an inclined upward hole opening mode, so that uniform water distribution can be realized, meanwhile, parabolas formed by water flow can also carry more oxygen into the filler layer, so that the dissolved oxygen of the filler layer is increased, the efficiency of degrading pollutants by microorganisms is improved, and the blockage of the wetland is prevented; 4. the filler bottom layer adopts zeolite and light ceramsite as fillers, and the zeolite has better adsorptivity to ammonia nitrogen due to the unique crystal structure of the zeolite, so that the ammonia nitrogen removal rate can be improved. The lightweight ceramsite has larger porosity and stronger adsorption capacity, is obvious in removing various pollutants, contains metal minerals such as iron, aluminum, calcium and the like, and has stronger adsorption capacity on phosphorus; 5. the wetland is provided with the cleaning holes, and the anaerobic biochemical tank can accumulate certain anaerobic sludge due to long-time operation, and the sludge load of the anaerobic tank can be improved and the biochemical efficiency can be improved by cleaning the excessive sludge through the cleaning holes and replacing part of suspended filler.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following description of the invention taken in conjunction with the accompanying drawings and examples.
As shown in figure 1, a courtyard type constructed wetland sewage treatment system comprises a constructed wetland tank body 1, wherein the constructed wetland sewage treatment system is divided into an anaerobic biochemical tank 3 and a sedimentation tank 4 through a vertical partition plate 2, a filter screen 5 is arranged at the lower part of the vertical partition plate, an inclined tube sedimentation device 6 is arranged at the middle part of the sedimentation tank, suspended filler 7 is put into the anaerobic biochemical tank, the anaerobic biochemical tank is communicated with a water inlet pipe 8, a horizontal partition plate 9 is arranged at the middle part of the anaerobic biochemical tank, constructed wetland is arranged on the horizontal partition plate, the constructed wetland comprises a filler layer paved on the horizontal partition plate and wetland plants planted on the filler layer, a water collecting pipe 10 is arranged in the filler layer at one end of the constructed wetland, a water distribution pipe 11 is horizontally arranged at the other end of the constructed wetland, the water distribution pipe is higher than the filler layer, and the inlet end of the water distribution pipe penetrates through the upper part of the vertical partition plate.
The constructed wetland is vertically provided with a cleaning pipe 12, the bottom of the cleaning pipe is communicated with the horizontal partition board, and the top of the cleaning pipe is higher than the filler layer, so that the cleaning of excess sludge and the replacement of part of suspended filler are facilitated.
A baffle plate is arranged in the middle of the artificial wetland to divide the artificial wetland into two parts, and a gap is reserved between the bottom of the baffle plate and the horizontal baffle plate.
The filler layer is divided into two layers from bottom to top, the lower layer is a zeolite and light ceramsite composite layer 13, and the upper layer is a river sand layer 14. The particle size of the filler of the zeolite and light ceramsite composite layer is 1.0-2.5 cm, and the thickness of the filler layer is 30cm; the grain diameter of the river sand layer is 0.5-1.0 cm, and the thickness of the packing layer is 20cm.
The lightweight ceramsite contains metal minerals such as iron, aluminum, calcium and the like, and has strong adsorption capacity to phosphorus. Formation of Fe in sewage 2+ 、Fe 3 + 、Ca 2+ 、Al 3+ Plasma metal ion, and PO in sewage 4 3- A precipitate is formed, P in the sewage is removed, and the reaction is as follows:
Fe 3+ +PO 4 3- ＝FePO 4 ↓ (1)
Fe 2+ +PO 4 3- ＝Fe3(PO 4 )2↓ (2)
3Ca 2+ +2PO 4 3- ＝Ca 3 (PO 4 ) 2 ↓ (3)
Al 3+ +PO 4 3- ＝AlPO 4 ↓ (4)
the water distribution pipe comprises a plurality of horizontally arranged perforated pipes, the distance between two adjacent perforated pipes is 30-50 cm, the perforated pipes are provided with holes in the directions of 45 degrees and 135 degrees in the section of the perforated pipe, the aperture is 0.5-0.8 cm, and the distance between the holes is 10cm.
The water collecting pipe is provided with openings in the directions of +/-45 degrees and +/-135 degrees of the cross section, the aperture is 0.5-0.8 cm, and the distance between the openings is 10cm.
The wetland plant is one or more of canna, typha and reed.
The water collecting pipes are UPVC pipes.
The invention relates to a courtyard type constructed wetland treatment process which comprises a water inlet pipe, an anaerobic biochemical tank, a sedimentation tank, a constructed wetland system and a cleaning hole. The sewage enters the anaerobic biochemical pool at the lower part of the device from the water inlet pipe, suspended filler is added into the anaerobic biochemical pool, is a novel bioactive carrier, has large specific surface area, good hydrophilicity and high bioactivity, can rapidly enrich a large amount of microorganisms, and utilizes the biochemical reaction of the microorganisms to decompose pollutants in the sewage. Meanwhile, a large amount of suspended matters can be adsorbed and trapped, sewage reacted in the anaerobic biochemical tank enters the sedimentation tank through the filter screen, the pore diameter of the filter screen is smaller than the diameter of the suspended filler, and the suspended filler is prevented from entering the sedimentation tank. The sedimentation tank water passes through the upper inclined tube sedimentation device from bottom to top, under the gravity and the resistance of the inclined tube, heavier sludge and suspended matters in the sewage partially descend and sediment and stay at the bottom of the sedimentation tank, and partial sludge can enter the anaerobic biochemical tank to be continuously oxidized and decomposed, so that the sludge yield can be reduced.
The sewage supernatant passing through the inclined tube precipitation device enters the constructed wetland filter material layer through the upper water distribution tube of the constructed wetland, and the water distribution tube of the constructed wetland is slightly lower than the water inlet end of the sewage inlet tube. The bottom of the artificial wetland water distribution pipe and the filter material layer are kept at a certain height, and sewage falls into the filter material layer in a parabolic manner from the upward inclined perforation of the water distribution pipe, so that more dissolved oxygen can be carried into the filter material layer. The upper artificial wetland is divided into a front-end wetland and a rear-section wetland by a partition board. In the front section of the wetland, sewage passes through two layers of filter materials from top to bottom, then passes through openings at the lower end of a wetland partition board, enters the rear section of the wetland, and in the rear section of the wetland, the sewage passes through the two layers of filter materials from bottom to top. The lower layer of the filter material layer is a zeolite and light ceramsite composite layer with stronger ammonia nitrogen and phosphorus removal, and the upper layer is a river sand layer with stronger suspended matters removal. The filter material layer is planted with wetland plants, mainly comprising one or more of canna, typha and reed. In the process of the sewage passing through the filter material layer, the sewage purification is completed by the cooperation of the biochemical reaction, chemical precipitation, chemical adsorption, physical adsorption and ecological action of the microorganisms, the filter material and the wetland plants. The water treated by the wetland is discharged out of the wetland through a perforated water collecting pipe arranged in the river sand layer, and the water collecting pipe is positioned at a position 10-20cm away from the top in the river sand layer, so that the sewage is ensured to smoothly pass through the filter material layer. The upper part of the device is provided with a cleaning hole, the height of which is slightly higher than the water inlet end of the sewage inlet pipe, and the device is mainly used for cleaning sludge in an anaerobic biochemical tank and replacing suspended fillers.
The system has the advantages of convenient installation, simple and compact equipment structure, reasonable layout, high removal rate of organic matters, ammonia nitrogen, phosphorus and SS, simple use and maintenance, and is particularly suitable for rural sewage treatment such as single household, multiple households and the like and distributed sewage treatment in tourist attractions and high-speed service areas.
Claims (7)
1. The utility model provides a courtyard type constructed wetland sewage treatment system, includes constructed wetland cell body, the constructed wetland cell body divide into anaerobic biochemical pond and sedimentation tank through vertical baffle, vertical baffle lower part is equipped with the filter screen, the sedimentation tank middle part is equipped with the pipe chute sediment device, throw into suspension filler in the anaerobic biochemical pond, anaerobic biochemical pond is linked together with the inlet tube, and the middle part is equipped with horizontal baffle, be equipped with the constructed wetland on the horizontal baffle, the constructed wetland includes the wetland plant of planting on the packing layer of laying on the horizontal baffle, is equipped with the collector pipe in the packing layer of constructed wetland one end, and the other end level sets up the water distribution pipe, the water distribution pipe is higher than the packing layer, and the entrance point of water distribution pipe wears to locate vertical baffle upper portion; a baffle plate is arranged in the middle of the constructed wetland to divide the constructed wetland into two parts, and a gap is reserved between the bottom of the baffle plate and the horizontal baffle plate; the filler layer is divided into two layers from bottom to top, wherein the lower layer is a zeolite and light ceramsite composite layer, and the upper layer is a river sand layer.
2. The courtyard type constructed wetland sewage treatment system according to claim 1, wherein a cleaning pipe is vertically arranged in the constructed wetland, the bottom of the cleaning pipe is communicated with the horizontal partition plate, and the top of the cleaning pipe is higher than the filler layer.
3. The courtyard type constructed wetland sewage treatment system according to claim 1 or 2, wherein the filler particle size of the zeolite and lightweight ceramsite composite layer is 1.0-2.5 cm, and the filler layer thickness is 30cm; the grain diameter of the river sand layer is 0.5-1.0 cm, and the thickness of the packing layer is 20cm.
4. The courtyard type constructed wetland sewage treatment system according to claim 1 or 2, wherein the water distribution pipe comprises a plurality of horizontally arranged perforated pipes, the distance between two adjacent perforated pipes is 30-50 cm, the perforated pipes are provided with holes in the directions of 45 degrees and 135 degrees in cross section, the aperture is 0.5-0.8 cm, and the distance between the holes is 10cm.
5. The courtyard type constructed wetland sewage treatment system according to claim 1 or 2, wherein the water collecting pipe is provided with openings in the directions of + -45 DEG and + -135 DEG of the cross section, the aperture is 0.5-0.8 cm, and the opening interval is 10cm.
6. The yard type constructed wetland sewage treatment system according to claim 1, wherein said wetland plant is one or more of canna, typha and reed.
7. The system of claim 1, wherein the water collection pipes are UPVC pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810935843.9A CN108706728B (en) | 2018-08-16 | 2018-08-16 | Courtyard type constructed wetland sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810935843.9A CN108706728B (en) | 2018-08-16 | 2018-08-16 | Courtyard type constructed wetland sewage treatment system |
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| Publication Number | Publication Date |
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| CN108706728A CN108706728A (en) | 2018-10-26 |
| CN108706728B true CN108706728B (en) | 2024-04-09 |
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| CN110143716A (en) * | 2019-04-03 | 2019-08-20 | 天津市水利科学研究院 | A kind of sewage disposal system for urban drainage pipe network |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761057A (en) * | 2015-03-25 | 2015-07-08 | 山东大学 | Biological carbon modular composite vertical-flow artificial wetland system |
| CN204625449U (en) * | 2015-05-15 | 2015-09-09 | 环境保护部南京环境科学研究所 | A kind of domestic sewage in rural areas self-circulation artificial wet land treating system |
| CN208856988U (en) * | 2018-08-16 | 2019-05-14 | 武汉紫光能控科技有限公司 | A kind of courtyard-style artificial marsh sewage treatment system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936159B (en) * | 2014-03-21 | 2015-07-08 | 南大（常熟）研究院有限公司 | Constructed wetland sewage treatment device and method for treating sewage |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104761057A (en) * | 2015-03-25 | 2015-07-08 | 山东大学 | Biological carbon modular composite vertical-flow artificial wetland system |
| CN204625449U (en) * | 2015-05-15 | 2015-09-09 | 环境保护部南京环境科学研究所 | A kind of domestic sewage in rural areas self-circulation artificial wet land treating system |
| CN208856988U (en) * | 2018-08-16 | 2019-05-14 | 武汉紫光能控科技有限公司 | A kind of courtyard-style artificial marsh sewage treatment system |
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