CN102633363A - Sewage treatment system with stacked artificial wetlands - Google Patents
Sewage treatment system with stacked artificial wetlands Download PDFInfo
- Publication number
- CN102633363A CN102633363A CN2012100631175A CN201210063117A CN102633363A CN 102633363 A CN102633363 A CN 102633363A CN 2012100631175 A CN2012100631175 A CN 2012100631175A CN 201210063117 A CN201210063117 A CN 201210063117A CN 102633363 A CN102633363 A CN 102633363A
- Authority
- CN
- China
- Prior art keywords
- wetland
- lower floor
- sewage treatment
- treatment system
- flow artificial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Hydroponics (AREA)
Abstract
The invention discloses a sewage treatment system with stacked artificial wetlands, which belongs to the technical field of sewage treatment and comprises an upper-layer vertical-flow artificial wetland and a lower-layer horizontal-flow artificial wetland. The upper-layer vertical-flow artificial wetland and the lower-layer horizontal-flow artificial wetland are respectively filled with packing, separated from each other by a geomembrane and communicated with each other by a water passing pipe penetrating through the geomembrane, the upper-layer vertical-flow artificial wetland consists of a water inlet, a water distributing pipe, a plurality of aerator pipes and a plurality of water collecting pipes, the water distributing pipe is communicated with the water inlet and positioned on the upper portion of the upper-layer vertical-flow artificial wetland, the aerator pipes and the water collecting pipes are respectively positioned on the lower portion and at the bottom of the upper-layer vertical-flow artificial wetland, the area of the top of the lower-layer horizontal-flow artificial wetland is larger than that of the top of the upper-layer vertical-flow artificial wetland, a lower-layer planting region is formed, plants are planted in the lower-layer planting region, and the lower-layer planting region is provided with a water outlet pipe. The system is used for treating rural domestic sewage, and has the advantages of small occupied area, fine treatment effect and the like.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of lamination artificial marsh sewage treatment system.
Background technology
The discharging wantonly that sewage is not treated can cause the severe contamination of surface water runoff, but polluted source water quality also increases the water supply risk and the processing cost in city, and causes life in the countryside water difficulty.Owing to receive the restriction of natural condition, domestic sewage in rural areas by using has dispersions, the characteristics of easily collecting not, suits measures to local conditions to develop comparatively suitable efficient low-consume domestic sewage in rural areas by using treatment process and just seems particularly important but meanwhile.
The artificial swamp technology has less energy-consumption, low maintenance, WWT and beautifies the characteristics that view combines, and is widely used in the processing of domestic sewage in rural areas by using.But should technology still there be poor denitrification and dephosphorization effect, fluctuation of service, problem such as floor space is big, the life-span is short.
Notification number is that the patent of invention of CN1173888C discloses a kind of artificial wet field facilities for treating sewage; Constitute by the overlapping stepped multistage people's brigade that forms is wetland bed from top to bottom, each grade is wetland bed all to have one or more water outlets that sewage inflow next stage of treated mistake is wetland bed.Adopt this device to carry out WWT; It is little that artificial swamp or other treatment process of comparing individual layer has floor space; Advantages of wide application range, but this treatment unit inside is hollow state, and the overlapping of each Ziren worker wetland can not be used effectively; Certainly will need to increase the number of plies of Ziren worker wetland for improving decontamination effect improving, just need to enlarge accordingly to take up room; Sewage is handled in the aerobic environment at the root system of plant place all the time in this device in addition, and is limited to the removal effect of total nitrogen in the sewage.
Summary of the invention
The invention provides a kind of lamination artificial marsh sewage treatment system, pollution treatment efficient is high, and is obvious to the removal effect of total nitrogen in the sewage, effective use device space, and floor space is little, and environmental benefit is good.
A kind of lamination artificial marsh sewage treatment system comprises upper vertical person who lives in exile worker wetland and lower floor's horizontal flow artificial wetland that filler is housed respectively, wherein is separated with geomembrane between the two and through passing the cross current of crossing of this geomembrane, wherein
Described upper vertical person who lives in exile worker wetland comprises:
Water-in, be communicated with and be positioned at the water distributor on upper vertical person who lives in exile worker wetland top, the some aeration tubes that lay respectively at upper vertical person who lives in exile worker wetland bottom and bottom and some headers with described water-in,
The topside area of described lower floor horizontal flow artificial wetland is formed for planting lower floor's growing area of plant greater than the topside area of upper vertical person who lives in exile worker wetland, and described lower floor growing area has rising pipe.
Be provided with some baffles in the described lower floor horizontal flow artificial wetland, described baffle with lower floor's horizontal flow artificial wetland intercept along level to the baffling passage; The spacing of described baffle is made as 2-3m; Described water pipe excessively is positioned at the upper reaches of baffling passage, and described lower floor growing area is positioned at the downstream of baffling passage.The sewage of handling through upper vertical person who lives in exile worker wetland contains certain dissolved oxygen levels, lower organic contamination substrate concentration, lower ammonia nitrogen concentration and higher nitric nitrogen concentration; In lower floor's horizontal flow artificial wetland, along with sewage flowing in the horizontal direction, because the activity of mikrobe; The oxygen that contains in the sewage can be consumed gradually; And can not be replenished, therefore can form double oxygen/anaerobic environment successively along flow path, for the nitric nitrogen in the sewage carries out denitrification denitrogenation envrionment conditions is provided; Some baffles are set in lower floor's horizontal flow artificial wetland can prolong the flow through path of current in lower floor's horizontal flow artificial wetland; Prolong the residence time of sewage in lower floor's horizontal flow artificial wetland, promptly prolong the time of denitrification denitrogenation, the treatment effect of enhanced sewage.
The ratio of the topside area of described upper vertical person who lives in exile worker wetland and the topside area of lower floor's horizontal flow artificial wetland is 1: 1.3-1.5.The topside area of lower floor's horizontal flow artificial wetland exceeds part and forms lower floor's growing area; The wetland plant of plantation well developed root system in lower floor's growing area; Flourishing root system of plant is that effluent stream provides aerobic environment again when baffling passage downstream are lower floor's growing area, under the acting in conjunction of aerobic microbiological, filler and wetland plant, sewage is further purified.
The spacing of described aeration tube is made as 0.5-1m.
The spacing of described header is made as 1-1.5m.
Filler in the described upper vertical person who lives in exile worker wetland is a graded stuffing, and its size distribution is 20-70mm, successively decreases from the bottom to top; Preferably, described filler is the mixture of building stones, sand and haydite; More preferably, described building stones are at least a in cobble, zeolite and the gravel, and its particle diameter is 20-50mm.
Filler in the described lower floor horizontal flow artificial wetland is a graded stuffing, and its size distribution is 30-50mm, successively decreases from the bottom to top; Preferably, described filler is the mixture of volcanics, oyster shells, clam shell.Volcanics, oyster shells and clam shell contain abundant calcium ion, under the biotic induce effect, phosphorus are had stronger absorption solidification effect, and phosphor-removing effect is obvious.
Know-why of the present invention:
(1) upper vertical person who lives in exile worker wetland is provided with the aeration pipe network and realizes the air blast oxygenation to sewage, and under the effect of aerobic microbiological, the organic pollutant in the sewage obtains biological degradation, and ammonia nitrogen obtains removing through the nitrification of mikrobe;
(2) the organic pollutant major part of handling in the sewage of back through upper vertical person who lives in exile worker wetland obtains biological degradation; The ammonia nitrogen major part is converted into nitrate nitrogen, after collecting, gets in the lower layer of water advection artificial swamp, because the front end of lower floor's horizontal flow artificial wetland does not have the oxygen input; Under the respiration of mikrobe; Form the oxygen/anaerobic environment of holding concurrently gradually, nitrate nitrogen is generated nitrogen by mikrobe through denitrification process and removes in double oxygen/anaerobic environment, consume the part organic pollutant simultaneously;
(3) be filled with the mixture of volcanics, oyster shells, clam shell in lower floor horizontal flow artificial wetland inside; Because volcanics, oyster shells and clam shell contain abundant calcium ion; Under the biotic induce effect, phosphorus is had stronger absorption fixed action, scale removal effect is obvious;
(4) be implanted with the wetland plant of well developed root system in lower floor's growing area kind of lower floor's horizontal flow artificial wetland; Under the oxygen therapy effect of root system of plant; Lower floor's growing area of lower floor's horizontal flow artificial wetland forms aerobic environment again, under the acting in conjunction of aerobic microbiological, filler and wetland plant, sewage is further purified.
Beneficial effect of the present invention:
The present invention passes through stack-design; Reduced the floor space of artificial swamp; The aeration tube of wet land system can be sent into air the upper vertical person who lives in exile worker wetland inside of air blast lamination artificial swamp, forms aerobic environment, thereby improves the organism and the ammonia nitrogen removal ability of upper vertical person who lives in exile worker wetland; In the lower floor horizontal-flow wetland inside of air blast lamination artificial swamp along with flowing of sewage forms the oxygen/anaerobic environment of holding concurrently gradually; Strengthened the denitrification denitrogenation process of wetland, in lower floor's horizontal-flow wetland, filled volcanics, oyster shells, clam shell etc. simultaneously and inhale the phosphorus filler, consolidation system is to the removal of phosphor in sewage; Be implanted with the wetland plant of well developed root system in lower floor's growing area kind of lower floor's horizontal-flow wetland; Lower floor's growing area of lower floor's horizontal-flow wetland forms aerobic environment under the effect of wetland plant root system oxygen therapy, has eliminated the peculiar smell that sewage forms under anaerobic environment, has further improved the effluent quality of system.
Special structure design of the present invention makes system aerobic, hold concurrently oxygen, anaerobism, good oxygen condition can alternately occur; Has good denitrogenation dephosphorizing ability; Removal ability to total nitrogen in the sewage is strong; And floor space is less, hydraulic load and pollution load are higher; Operation and cost of investment are also lower, and domestic sewage in rural areas by using is after this wet land system is handled, and water outlet COD (CODcr), ammonia nitrogen (NH3-N), total nitrogen (TN) and total phosphorus (TP) can reach " urban wastewater treatment firm pollutant emission standard " one-level B standard (GB18918-2002).
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of lower floor shown in Figure 1 horizontal flow artificial wetland.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of lamination artificial marsh sewage treatment system comprises upper vertical person who lives in exile worker wetland and lower floor's horizontal flow artificial wetland, is separated with geomembrane 6 between the two; Geomembrane 6 is provided with the hole, and two-layer up and down artificial swamp is communicated with through the water pipe 7 of crossing that passes geomembrane 6.
Upper vertical person who lives in exile worker wetland internal upper part is provided with water distributor 2, and the bottom is provided with the header 3 of horizontal arrangement from left to right, and header 3 is set to some; The formation pipe network that catchments; Spacing between adjacent two headers 3 generally is made as 1.2m, and near the online square horizontal arrangement aeration tube 4 from left to right of header, aeration tube 4 is set to some; Form the aeration pipe network; Spacing between adjacent two aeration tubes 4 generally is made as 0.8m, and upper vertical person who lives in exile worker wetland left hand external is provided with water-in 1, and water-in 1 is communicated with the left end of water distributor 2;
Be filled with the graded stuffing of forming by the mixture of building stones, sand and haydite in the upper vertical person who lives in exile worker wetland; Its size is 20-70mm; Successively decrease from the bottom to top; Wherein building stones are the mixture of cobble, zeolite and gravel, and the size of building stones is 20-50mm, at the top of upper vertical person who lives in exile worker wetland plantation wetland plant 5.
The topside area of lower floor's horizontal flow artificial wetland is greater than the topside area of upper vertical person who lives in exile worker wetland; The topside area ratio of levels is 1: 1.4, and promptly lower floor's topside area exceeds 40% of top of the upper layer area, and the left side outer wall of upper and lower layer artificial swamp is in the same vertical plane; The part that top, lower floor right side exceeds forms lower floor's growing area 11; The wetland plant 9 of plantation well developed root system in lower floor's growing area 11, upper and lower ply part is separated by geomembrane 6, and geomembrane 6 is provided with through hole near outer wall place, upper and lower layer artificial swamp left side; Be communicated with through the water pipe 7 of crossing that passes this through hole between the upper and lower layer artificial swamp; Lower floor's horizontal flow artificial wetland is that the baffle 8 of 2.5m is divided into along the baffling passage of level trend by spacing, crosses the upper reaches that water pipe 7 is positioned at the baffling passage, and the through hole that passes on the geomembrane 6 is communicated with the left end of header 3; Lower floor's growing area 11 is positioned at the downstream of baffling passage, and its outer wall is provided with water outlet 10.
Fill by the composite graded stuffing of volcanics, oyster shells and clam shell in lower floor's horizontal flow artificial wetland, the particle size range of volcanics, oyster shells and clam shell is 30-50mm, successively decreases from the bottom to top.
The outer wall of upper vertical person who lives in exile worker wetland, the outer wall of lower floor's horizontal flow artificial wetland and base plate all adopt concrete structure, and its thickness is as the criterion with the weight that can support artificial swamp.
Upper vertical person who lives in exile worker wetland can be arranged to different shapes according to landform and needs with the shape of lower floor's horizontal flow artificial wetland.
Technical process of the present invention is following:
Domestic sewage in rural areas by using is after pre-treatment and rectangular sedimentation tank processing; Send in this treatment system by water-in, in the aeration pipe network, blast air, be distributed into uniformly in the upper vertical person who lives in exile worker wetland in the water distributor 2 of sewage by top; Sewage flows through filler from top to bottom; The aeration pipe network blasts air from bottom to top, and for sewage provides aerobic environment, sewage is under the effect of aerobic microbiological; Organic pollutant wherein is by biological degradation; The ammonia nitrogen major part is converted into nitrate nitrogen through the nitrification of mikrobe, contains certain dissolved oxygen levels, lower organic contamination concentration, lower ammonia nitrogen concentration and higher nitric nitrogen concentration through the sewage after the upper vertical person who lives in exile worker wetland abatement processes, finally is pooled in the pipe network that catchments of bottom;
The sewage that catchments in the pipe network flows in lower floor's horizontal flow artificial wetlands by crossing water pipe 7, along with sewage flowing in the baffling passage in the horizontal direction, because the activity of mikrobe; The oxygen that contains in the sewage can be consumed gradually, and can not be replenished, and therefore can form double oxygen/anaerobic environment successively along flow path; For the nitric nitrogen in the sewage carries out denitrification denitrogenation envrionment conditions is provided; Because filler volcanics, oyster shells and clam shell contain abundant calcium ion, the phosphorus in the sewage there is stronger absorption fixed action simultaneously, removes the phosphorus in the decontaminated water; Sewage is handled the back through denitrification and is flowed into lower floor's growing area 11; Lower floor's growing area 11 forms aerobic environment again under the root system oxygen therapy effect of wetland plant 9, under the acting in conjunction of aerobic microbiological, filler and wetland plant, further purify; Eliminate the peculiar smell of sewage under anaerobic environment simultaneously, finally from water outlet 10 dischargings.
Claims (9)
1. lamination artificial marsh sewage treatment system; It is characterized in that; Comprise upper vertical person who lives in exile worker wetland and lower floor's horizontal flow artificial wetland that filler is housed respectively, wherein be separated with geomembrane (6) between the two and be communicated with, wherein through the water pipe (7) of crossing that passes this geomembrane (6)
Described upper vertical person who lives in exile worker wetland comprises:
Water-in (1), be communicated with and be positioned at the water distributor (2) on upper vertical person who lives in exile worker wetland top, the some aeration tubes (4) that lay respectively at upper vertical person who lives in exile worker wetland bottom and bottom and some headers (3) with described water-in (1),
The topside area of described lower floor horizontal flow artificial wetland is formed for planting lower floor's growing area (11) of plant greater than the topside area of upper vertical person who lives in exile worker wetland, and described lower floor growing area (11) has rising pipe (10).
2. lamination artificial marsh sewage treatment system according to claim 1; It is characterized in that; Be provided with some baffles (8) in the described lower floor horizontal flow artificial wetland, described baffle (8) with lower floor's horizontal flow artificial wetland intercept along level to the baffling passage.
3. lamination artificial marsh sewage treatment system according to claim 2 is characterized in that, the spacing of described baffle (8) is made as 2-3m.
4. lamination artificial marsh sewage treatment system according to claim 2 is characterized in that, described water pipe (7) excessively is positioned at the upper reaches of baffling passage, and described lower floor growing area (11) is positioned at the downstream of baffling passage.
5. lamination artificial marsh sewage treatment system according to claim 1 is characterized in that, the ratio of the topside area of described upper vertical person who lives in exile worker wetland and the topside area of lower floor's horizontal flow artificial wetland is 1: 1.3-1.5.
6. lamination artificial marsh sewage treatment system according to claim 1 is characterized in that, the spacing of described aeration tube (4) is made as 0.5-1m.
7. lamination artificial marsh sewage treatment system according to claim 1 is characterized in that, the spacing of described header (3) is made as 1-1.5m.
8. lamination artificial marsh sewage treatment system according to claim 1 is characterized in that, the filler in the described upper vertical person who lives in exile worker wetland is a graded stuffing, and its particle diameter successively decreases from the bottom to top.
9. lamination artificial marsh sewage treatment system according to claim 1 is characterized in that, the filler in the described lower floor horizontal flow artificial wetland is a graded stuffing, and its particle diameter successively decreases from the bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100631175A CN102633363A (en) | 2012-03-12 | 2012-03-12 | Sewage treatment system with stacked artificial wetlands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100631175A CN102633363A (en) | 2012-03-12 | 2012-03-12 | Sewage treatment system with stacked artificial wetlands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102633363A true CN102633363A (en) | 2012-08-15 |
Family
ID=46617965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100631175A Pending CN102633363A (en) | 2012-03-12 | 2012-03-12 | Sewage treatment system with stacked artificial wetlands |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102633363A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874926A (en) * | 2012-09-21 | 2013-01-16 | 田灵 | System and method for treating sewage by using unpowered oxygen-supply ecological filter |
| CN102976493A (en) * | 2012-11-30 | 2013-03-20 | 南京农业大学 | Horizontal subsurface flow constructed wetlands experimental device |
| CN103145295A (en) * | 2013-03-12 | 2013-06-12 | 复旦大学 | Enhanced ecological treatment system for cephalosporin-containing sewage |
| CN104891741A (en) * | 2015-05-28 | 2015-09-09 | 长春黄金研究院 | Environment-friendly treatment method for thiocyanate-contained wastewater |
| CN105060483A (en) * | 2015-08-14 | 2015-11-18 | 中国科学院水生生物研究所 | Overlap type composite sewage treatment device for vertical flow artificial wetland |
| CN107879475A (en) * | 2017-09-30 | 2018-04-06 | 浙江大学 | The three-dimensional artificial marsh sewage treatment system of Vertical Flow and sewage water treatment method |
| CN109250859A (en) * | 2017-07-12 | 2019-01-22 | 江苏省农业科学院 | A kind of resident living area initial rainwater runoff intercepts, purification equipment |
| WO2019153519A1 (en) * | 2018-02-11 | 2019-08-15 | 浙江省环境保护科学设计研究院 | Intelligently controlled anti-blockage artificial wetland rain and sewage enhanced treatment system and method based on solar power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884139A (en) * | 2006-07-03 | 2006-12-27 | 华南农业大学 | Vertical current and horizontal current integrated composite artificial wetland treatment method for treating urban sewage |
| CN101186382A (en) * | 2007-11-28 | 2008-05-28 | 浙江师范大学 | Stereo artificial wetland system for treating sewage |
| CN101781060A (en) * | 2010-03-02 | 2010-07-21 | 河北农业大学 | Composite artificial marsh sewage treatment system |
| CN201648120U (en) * | 2010-03-02 | 2010-11-24 | 河北农业大学 | Vertical flow-horizontal underflow combined artificial wetland |
| CN202529907U (en) * | 2012-03-12 | 2012-11-14 | 浙江省环境保护科学设计研究院 | Sewage treatment system for laminated constructed wetland |
-
2012
- 2012-03-12 CN CN2012100631175A patent/CN102633363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884139A (en) * | 2006-07-03 | 2006-12-27 | 华南农业大学 | Vertical current and horizontal current integrated composite artificial wetland treatment method for treating urban sewage |
| CN101186382A (en) * | 2007-11-28 | 2008-05-28 | 浙江师范大学 | Stereo artificial wetland system for treating sewage |
| CN101781060A (en) * | 2010-03-02 | 2010-07-21 | 河北农业大学 | Composite artificial marsh sewage treatment system |
| CN201648120U (en) * | 2010-03-02 | 2010-11-24 | 河北农业大学 | Vertical flow-horizontal underflow combined artificial wetland |
| CN202529907U (en) * | 2012-03-12 | 2012-11-14 | 浙江省环境保护科学设计研究院 | Sewage treatment system for laminated constructed wetland |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874926A (en) * | 2012-09-21 | 2013-01-16 | 田灵 | System and method for treating sewage by using unpowered oxygen-supply ecological filter |
| CN102976493A (en) * | 2012-11-30 | 2013-03-20 | 南京农业大学 | Horizontal subsurface flow constructed wetlands experimental device |
| CN103145295A (en) * | 2013-03-12 | 2013-06-12 | 复旦大学 | Enhanced ecological treatment system for cephalosporin-containing sewage |
| CN104891741A (en) * | 2015-05-28 | 2015-09-09 | 长春黄金研究院 | Environment-friendly treatment method for thiocyanate-contained wastewater |
| CN104891741B (en) * | 2015-05-28 | 2017-05-03 | 长春黄金研究院 | Environment-friendly treatment method for thiocyanate-contained wastewater |
| CN105060483A (en) * | 2015-08-14 | 2015-11-18 | 中国科学院水生生物研究所 | Overlap type composite sewage treatment device for vertical flow artificial wetland |
| CN109250859A (en) * | 2017-07-12 | 2019-01-22 | 江苏省农业科学院 | A kind of resident living area initial rainwater runoff intercepts, purification equipment |
| CN107879475A (en) * | 2017-09-30 | 2018-04-06 | 浙江大学 | The three-dimensional artificial marsh sewage treatment system of Vertical Flow and sewage water treatment method |
| CN107879475B (en) * | 2017-09-30 | 2021-01-08 | 浙江大学 | Vertical flow three-dimensional constructed wetland sewage treatment system and sewage treatment method |
| WO2019153519A1 (en) * | 2018-02-11 | 2019-08-15 | 浙江省环境保护科学设计研究院 | Intelligently controlled anti-blockage artificial wetland rain and sewage enhanced treatment system and method based on solar power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102633363A (en) | Sewage treatment system with stacked artificial wetlands | |
| CN105236671B (en) | A kind of ecological green land sewage disposal system and its method | |
| CN105753166B (en) | Horizontal drowned flow-two-stage oxygenation vertical subsurface flow wetland sewage disposal system and method | |
| CN102531187B (en) | Method for treating domestic wastewater with combined laminated vertical flow-horizontal subsurface flow wetland | |
| CN105502841A (en) | Novel spring-stepped scene-layered sewage treatment equipment | |
| CN102260021A (en) | Process and device for deep denitrogenation of domestic wastewater without additional carbon source | |
| CN202594913U (en) | Turn back flow type landscape composite artificial wetland sewage treatment system | |
| CN102874926A (en) | System and method for treating sewage by using unpowered oxygen-supply ecological filter | |
| CN208292826U (en) | More PROCESS COUPLING multistage artificial wet land systems | |
| CN104986917B (en) | Landscape type integrated effluent disposal system | |
| CN101386451B (en) | Method for processing town sewage using composite vertical current artificial marshland and apparatus thereof | |
| CN102603118A (en) | Sewage treatment method based on blasting laminated artificial wetland | |
| CN108275782B (en) | Integrated three-dimensional wetland sewage treatment effluent TN control device and method | |
| CN202576089U (en) | Ecological combination pond | |
| CN103708621B (en) | Combined artificial wetland system and sewage treatment method thereof | |
| CN101486525A (en) | Automatic oxygenation method for processing rural area town domestic sewage | |
| CN202529907U (en) | Sewage treatment system for laminated constructed wetland | |
| CN219771907U (en) | Domestic sewage's processing system suitable for low carbon-nitrogen ratio | |
| CN202785806U (en) | Unpowered oxygenation ecological filter tank sewage disposal system | |
| CN2905775Y (en) | Composite artificial wetland | |
| CN105152256B (en) | A kind of fixation packed bed aeration stripping system and method for being used to remove underground water carbon tetrachloride | |
| CN213865815U (en) | Integrated domestic sewage treatment equipment | |
| CN214142004U (en) | Treatment system of decentralized sewage | |
| CN210764840U (en) | Distributed micro-power sewage treatment device and sewage treatment system comprising same | |
| CN211712873U (en) | Artificial wetland purification system for treating rural domestic sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120815 |