CN1580415A - Composite wet land artesian polluted river water purifying method - Google Patents
Composite wet land artesian polluted river water purifying method Download PDFInfo
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Abstract
A method for purifying pollutant river by stting up purifying regions on river beach or lake beach wet zones includes a primary purification and deep goingp urification. A pollute cut-off gate is set on the pollutant river, an outlet is set on the course in front of the gate, a deposit pool surrounded by grates stopping pollutes at the back of the outer, water from the deposit pool flows into the deep going purifying biological intensifying deposition pool cultivating suspending plants, water from it flows into distributing ditches then to the underflow wet zone pipe with a gag at the pipe outlet and an outlet on the pipe wall, limestones, cobbles are laid in layer on the pipe to let the water flow to a collecting ditch then to the surface wet zone with plants grown there and water coming out from the wet flow to the lower reach river courses.
Description
Technical field
The present invention relates to water pollution control, landlocked water body restoration of the ecosystem, particularly a kind of river shoal wetland, Hekou District lakeshore wetland of utilizing built cleaning system, tackle, purify ingoing river, prevent the compound wetland gravity flow purifying contaminated river method of lake pollution and eutrophication.
Background technology
In the water prevention and cure of pollution field, quite abundant and ripe for the Prevention Technique of all kinds of point pollution sources, but lack economy, control technology fast and effectively for pollution of area source from vast rural area, agricultural and the soil erosion of runoff district.In point pollution source controlled substantially today, pollution of area source is the primary pollution source that causes China river, lake water pollution and body eutrophication.Adopt to build method pollution treatments such as Wastewater Treatment Plant, construction cost and running cost higher and technological process and disposal ability general engineering of water treatment are constant, are difficult to adapt to the fluctuations such as the water yield, water quality of natural river.
Summary of the invention
The objective of the invention is at China river, a lake pollution of area source control difficult problem, exploration utilizes river shoal wetland, Hekou District lakeshore wetland to build cleaning system, interception purifies ingoing river, prevent lake pollution and eutrophication, and it is big at the polluted river water yield, variation water quality amplitude, characteristics such as the pollutant complexity is various, with reference to related contents such as hydraulic engineering, sewage treatment project, wetland ecoengineerings, synthesized attribute according to natural river, a kind of compound wetland gravity flow purifying contaminated river method is provided, realizes targets such as economic, effective, quick, lasting.
Above-mentioned purpose of the present invention is achieved in that compound wetland gravity flow purifying contaminated river method, it is characterized in that utilizing the river shoal wetland, Hekou District lakeshore wetland is built purifying area, interception, purify ingoing river, this purifying area comprises primary purifying and two process sections of deep purifying, primary purifying will be provided with one section dirty lock on the river that pollute, cut on the preceding river course of dirty lock and set out the mouth of a river, periphery is set behind the delivery port is provided with the sedimentation basin that blocks dirty grid corral, cut behind the dirty lock and on the river course spillway is set, the sedimentation basin water outlet has the biological reinforced sedimentation basin of fluitante to the breed of deep purifying, biological reinforced sedimentation basin water outlet is to the cloth ditch, the water outlet of cloth ditch is to the current wetland water distributor that is arranged at the current wetland bottom, the current wetland water distributor port of export is established plug, the tube wall of current wetland water distributor is provided with delivery port, current wetland water distributor higher slice is provided with limestone, cobble, the current wetland water outlet is to collecting gutter, the collecting gutter water outlet is to the subsurface runoff wetland, current wetland and subsurface runoff wetland are all planted and are implanted with wetland plant, the subsurface runoff wetland effluent is to downstream river course, purifying area periphery handicapping water cofferdam and the cofferdam that blocks water also is set behind spillway with current wetland and subsurface runoff wetland and sedimentation basin and the separation of biological reinforced sedimentation basin, the delivery port that on the river course, is provided with in the purifying area to the subsurface runoff wetland effluent to downstream river course, on, be provided with the height of water between the following flow process.Can adopt arc to block the fan-shaped sedimentation basin of dirty grid corral, and long-armed tower crane is set, in time rubbish foreign material and the mud in the Salvage and Wreck Removal sedimentation basin at circle centre position.Be equipped with diversion dam in biological reinforced sedimentation basin water outlet, collecting gutter water outlet place, the diversion dam water outlet is to next flow process, and subsurface runoff wetland effluent place establishes branch water overflow weir to downstream river course, and the subsurface runoff wetland can be established 2～3 grades, each inter-stage is established diversion dam, establishes branch water overflow weir between afterbody and the downstream river course.Current wetland water distributor two ends can be exposed to respectively in cloth ditch and the collecting gutter.
Advantage of the present invention and effect:
(1) more complete compound wetland purification technology
According to the hydrological characteristics of polluted river, pollute feature and can utilize land resources, multi-purpose water conservancy project, Environmental Engineering, ecological engineering theory and technology, can adapt to that the polluted river water yield, degree of contamination fluctuating range are big, the complicated characteristics such as various of pollutant type, realize effectively purifying.The river has compiled all pollutants in the whole territory of catchmenting, and not only pollutant kind is various, and pollutant levels are changeable.The inventive method is removed silt, interception in precipitation and is salvaged the rubbish foreign material, biologically assists precipitation to remove aspects such as tiny solid and non-solid contaminants, decomposition and inversion organic pollution, dephosphorization denitrogenation all to have stronger purification function, can adapt to the improvement of polluted river water.For the seriously polluted river water (town river) based on sanitary sewage, 10000m
3The water yield of/d need about 40000m
2Wetland, water outlet can reach the one-level comprehensive discharge standard; For polluting lighter river, 10000m
3The water yield of/d need about 20000m
2Wetland can become III class water with ground Table V class water treatment.
(2) low head gravity flow operation
Little head gravity flow operation only needs the small drop about 0.5m, just can drive the gravity flow operation of wetland purification system, and this makes the inventive method can be applicable to most of river.Whole wetland purification system takes big section, short flow scheme design, carry out water distribution uniformity by diversion dam, the small drop that utilizes river nature gradient to obtain about 0.5m promotes, realize the gravity flow operation, need not consumes energy, not only saved operating cost, and fluctuation that can the adjusted stream water yield (even short-term is withered).Main cause is: the wetland purification system generally builds on the milder low-lying soil of lakeshore or river shoal of physical features, is generally less than 1: 1000 at these rivers, location nature gradients, and the drop that obtain about 0.5m is relatively easy.
(3) powerful primary treatment ability
The natural river water yield and variation water quality amplitude are bigger.Generally dry season the water yield less, damage ratio is more serious; Rainy season, the water yield was bigger, polluted lighter; Heavy rain silt in season, rubbish foreign material are more.The technological process and the disposal ability of general engineering of water treatment are constant, can't adapt to the water yield fluctuation of natural river.The inventive method is established spillway at sand setting, after blocking dirty workshop section, form the primary treatment tributary, grit chamber suitably be set, block dirty grid, under the situation of flood spillway scale, can implement primary purifying to all rivers (comprising storm runoff) and handle, effectively control the rubbish foreign material and pollute and silt pollution.
(4) anti-aging continuous operation
The inventive method is aspect operational management, to blocking rubbish foreign material before the dirty grid and mud Salvage and Wreck Removal (every day at least once) at any time, deposit in the biological reinforced sedimentation basin is regularly removed (annual 1-2 time), current wetland is regularly dredged (once a year), to all wetland plants in strict accordance with planting season and gathering in, can guarantee whole wetland purification system do not stop up, aging, realize continuous utilization.Utilize two kinds of evergreen plants of oenanthe stolonifera and typha orientalis to set up muskeg, realized the evergreen of muskeg as constructive species; Add the desilting under water and the current wetland anti-clogging technology of biological reinforced sedimentation basin, can guarantee the anniversary stable operation of wetland purification system, overcome drawbacks such as general wetland engineering is aging, obstruction, seasonal inefficacy.
(5) guarantee water conservancy safety, Environmental security, ecological safety
The inventive method intercepts dirty river from the river course, return downstream river course with clear spring, whole process using physical cleaning and biological purifying process, do not introduce alien species, do not use any medicament, and complete release floodwatering facility is arranged, can guarantee water conservancy safety, Environmental security and the ecological safety of river and downstream water body thereof.
(6) simple and convenient management
The wetland engineering of utilizing the inventive method to build, daily management mission mainly comprises: salvage to clear and block preceding rubbish foreign material of dirty grid and mud, the management of wetland plant, the observation regulation and control of current etc., all fairly simple, the peasant who generally has high chinesization just can serve as management work, 20000m through the training in 1 year
2Wetland usually only need 2 people management.
(7) economical and practical
It is integrated to block dirt-sand setting-rubbish foreign material salvaging-sludge removal.General sewage treatment process will block dirty grid and the sedimentation basin branch is arranged, and salvages the rubbish foreign material and carries out in two steps with removing mud, and construction investment and operational and administrative expenses are higher.The present invention blocks dirty grid corral sedimentation basin with arc, forms to block dirt-sand setting integral structure; Light long-armed tower crane operation grab bucket is set on the center of circle, has realized that rubbish foreign material, mud with same mechanical Salvage and Wreck Removal, have reduced construction investment and operating cost significantly, and saved project occupation of land.Block dirty grid with Wastewater Treatment Plant electronic and compare, this arc blocks dirty grid and has bigger filter area, and the sedimentation basin that blocks before the dirty grid can hold a large amount of rubbish foreign material, is convenient to handle the big flow storm runoff that is rich in the rubbish foreign material.Finish the task of Salvage and Wreck Removal rubbish foreign material and sedimentation basin mud simultaneously with a light-duty long-armed tower crane, the directly entrucking outward transport of rubbish foreign material that salvage and mud, score other places reason is effective more economically.Utilize the inventive method, handle the river 10000m of severe contamination
3/ d approximately needs 40000m
2Wetland, 4 people management, construction cost is no more than 6,000,000 yuan (not containing fees paid for taking rural land), and annual running cost is used in 150,000 yuan.Compare with other any sewage disposal technologies (comprising common artificial swamp technology), the inventive method all has economical and practical advantage.
Description of drawings
Fig. 1 is the purification process schematic diagram of the inventive method;
Fig. 2 is that the purifying area of the inventive method is provided with schematic diagram.
The specific embodiment
Referring to Fig. 1,2, the operating principle of the inventive method and the course of work:
Primary purifying: close the dirty lock of building on river course 12 that blocks, force river to enter wetland purification district (delivery port 3 cross-sections of river are greater than river cross-section) by delivery port 3.After entering fan-shaped sedimentation basin 4, current slow down, the rubbish foreign material generation sedimentation of bulky grain silt and suspension, and floating rubbish foreign material are blocked dirty grid 5 and are blocked in fan-shaped sedimentation basin.The light long-armed tower crane 6 that utilization is installed on the center of circle is controlled automatic grab, and in time with rubbish foreign material in the fan-shaped sedimentation basin and mud Salvage and Wreck Removal, entrucking transports the soot to and makes landfill disposal.Through above primary treatment (precipitating, block dirt) afterwards, the water yield that surpasses the deep purifying ability will enter river course, downstream (behind the lock) via flood spillway mouth 7, and other rivers enter degree of depth evolution workshop section.Rainy season, the slight pollution river of big flow carried more rubbish foreign material and silt, all through after primary purifying system precipitation, the waste-blocking position reason, and most of river river course after flood spillway enters lock; Dry season, river discharge was little, and degree of contamination is heavier, and all river is handled through primary purifying processing+deep purifying.This just process characteristic can adapt to fluctuating widely of the natural river water yield and water quality, and guarantees effluent quality.
Deep purifying: river enters biological reinforced sedimentation basin 8 after passing and blocking dirty grid, with floating plant cultivations such as oenanthe stolonifera, water hyacinths in sedimentation basin, the fluitante coverage reaches more than 80%, in further physical sedimentation, can adsorb by the surface-peel off, biology helps and coagulates-precipitation, bio-absorbable-mechanism such as precipitation, impels finely ground particles, dissolved organic matter even solubilised state mineral matter in the water body to precipitate; Biomembrane function and nutritive salt absorption and assimilation-results output function that while fluitante surface provides play a role at removal BOD and aspects such as nitrogen, phosphorus.For relatively more dirty river, biological reinforced precipitation workshop section seems particularly important.After biological reinforced sedimentation basin purification, river imports current wetland cloth ditch 9, enters current wetland 11 via the water distributor 10 that is embedded in the current wetland bottom, and vertical lifting is after the surface, import collecting gutter 12, evenly enter subsurface runoff wetland 14 by diversion dam 13 then.The subsurface runoff wetland is generally established 2～3 grades, plant and be implanted with multiple wetland plant (according to local climate condition and hygrophyte resource, select species such as oenanthe stolonifera, arrowhead, lotus, water hyacinth, typha orientalis, grass-leaved sweetflag, umbrella bamboo, canna, black algae, eel grass, water caltrop, p.malaianus, with drought-enduring kind and the hot kind interplanting of happiness, set up evergreen type muskeg, the detergent power that the formation anniversary is stable), by the comprehensive purifying effect of soil, plant and microorganism, reach and remove nitrogen, phosphorus, BOD, COD even depth purification purpose.Carry out water distribution uniformity by diversion dam 13 between the subsurface runoff wetlands at different levels, establish branch water overflow weir 15 between afterbody subsurface runoff wetland and the downstream river course, fall through undue water overflow weir 15 through the river of wetland purification and enter downstream river course 16.
Flood discharge: there is the flood discharge problem in natural river, and the inventive method mainly is implemented under the prerequisite that ensures flood discharge safety from three levels and handles polluted river water to greatest extent.1. but advanced treatment system is taked big section overflow design; 2. block the setting of flood spillway behind the dirty grid, formed powerful primary treatment ability.A large amount of mud and rubbish foreign material that flood carries are removed in the primary purifying system, and the river of process primary purifying enters downstream river course by flood spillway; 3. lock overflow flood and open a sluice gate flood discharge, the lock chamber span width equals river width, and the lock crest level equals highest working water level, and the flood that can overflow from the lock top when running into flood be opened a sluice gate flood discharge in case of necessity.The inventive method provides blocks the flood that dirt-sand setting-Flood Design Discharge for Spillway approach can effectively be drained general flow, and realizes primary purifying, and lock overflow flood and open a sluice gate the flood that flood discharge can be drained any flow does not influence the flood carrying capacity in original river course.
Vegetation management: the fluitante in the biological reinforced sedimentation basin is regularly salvaged, and to the plant periodical reaping in current wetland and the subsurface runoff wetland, the annual renewal planted once.
Biological reinforced sedimentation basin desilting: remove the mud in the biological reinforced sedimentation basin annual February, can pass through dual mode: open and block dirty lock 2, put and do river in the biological reinforced sedimentation basin 8, carry out artificial desilting or slush pump desilting; Under normal operation, directly aspirate desilting with slush pump.
The current wetland anti-clogging: current wetland also claims the gravel bed system wetland, is resistance to water-flow maximum in all wetlands, water amount minimum, the aging wetland type of the easiest obstruction, and the residual volume of biofilm detachment and hygrophyte is tired to be the main cause that results in blockage.The inventive method is by three aspect preventions and eliminate the current wetland obstruction.1. establish biological reinforced sedimentation basin before current wetland, the degree of depth is removed the fine particle thing in the river, reduces the particle content that enters in the current wetland river.2. current wetland is taked upwelling, big section structure, and flow process is short, and discharge capacity is strong, is not easy to stop up; Adopt thicker filler, lower floor's filler is with diameter 10-30mm crushed stone lime stone, to reduce construction investment and reinforced phosphor-removing effect; The upper strata filler is with diameter 20-50mm cobble, to guarantee the normal development of wetland plant root system.3. the water distributor two ends are exposed to respectively in cloth ditch and the collecting gutter, end in the collecting gutter stops up with plug, can open plug when stopping up in the generator tube and wash with water pump, take place to seal up plug when gravel bed system stops up and wash with high-pressure hydraulic pump from water inlet from water inlet.Adopt the inventive method, can realize the long-term operation continuously of current wetland, exempt filler and turn over the trouble and the huge cost of washing or upgrading.
Big flow homogeneous flow field: whole wetland purification system takes big section, low flow velocity design, and between wetlands at different levels, adopt " branch water overflow weir " to carry out water distribution, inter-stage only needs the drop of 0.1m, just can realize flow field homogeneous in the whole wetland, give full play to the purification function of wetland each several part.
Implementation example:
(1) Fuxian Lake puddling channel test wetland engineering, design according to the inventive method by Nanjing Inst. of Geography and Lakes, Chinese Academy of Sciences, calendar year 2001, Dengjiang County Environmental Protection Agency and designing unit united construction, area 12000m by Yuxi discipline inspection commission, the approval project verification of Yuxi Environmental Protection Agency
2, trial run is built up and is dropped in 1,670,000 yuan of gross investments (containing fees paid for taking rural land) at the bottom of calendar year 2001.The puddling ditch is the small-sized natural river at county town, Chengjiang of flowing through, after artificial reconstructed one-tenth sludge collecting ditch has been admitted the sanitary sewage at county town, Chengjiang about 70%.Dry season, river almost all was a sanitary sewage, the about 3000m of the water yield
3/ d; Rainy day city surface flow and catchment, upstream directly fail to be convened for lack of a quorum into, carry a large amount of rubbish foreign material and mud.Puddling channel test wetland engineering is handled all water yields dry season, and rainy season, disposal ability can reach 12000m
3/ d.Through the trial run over 2 years, effluent quality reaches national sewage comprehensive discharge primary standard substantially, about 60,000 yuan of year operational and administrative expenses can replace the Wastewater Treatment Plant that build on the puddling ditch fully, and the maximum water yield and the treatment effect handled is all above this Wastewater Treatment Plant.
(2) control wetland engineering is polluted in Fuxian Lake horse material river, design according to the inventive method by Nanjing Inst. of Geography and Lakes, Chinese Academy of Sciences, Yuxi discipline inspection commission, the approval project verification in 2002 of Yuxi Environmental Protection Agency, Dengjiang County Environmental Protection Agency and designing unit unite construction, area 20000m
2, 3,330,000 yuan of gross investments (containing fees paid for taking rural land), put into operation in June, 2003, and be completed and put into operation October.Horse material river is the small-sized natural river at county town, Chengjiang of flowing through, and has admitted the sanitary sewage at county town, Chengjiang about 30%, and quality of river water is throughout the year for ground Table V class or be inferior to the V class.Control wetland engineering design primary purifying ability 50000m is polluted in horse material river
3/ d, deep purifying ability 15000～20000m
3/ d reaches ground Table IV class standard through the deep purifying effluent quality.2 months operation PRELIMINARY RESULTS, the deep purifying maximum stream flow reaches 43000m
3/ d, effluent quality are better than ground Table III class standard.
Adopt the inventive method to handle seriously polluted river water (sewage rank), 10000m
3The disposal ability of/d needs soil 40000m approximately
2, about 6,000,000 yuan of construction investment, 1m
3Only 600 yuan of the disposal ability investments of/d; About 150,000 yuan of year operational and administrative expenses is handled 1m
3The operational and administrative expenses of sewage has only 0.04 yuan; In 3～4 months, just can build up and put into operation.This be any up to now conventional sewage treatment process and artificial wetland treatment process can not and.
Claims (5)
1, compound wetland gravity flow purifying contaminated river method, it is characterized in that utilizing the river shoal wetland, Hekou District lakeshore wetland is built purifying area, interception, purify ingoing river, this purifying area comprises primary purifying and two process sections of deep purifying, primary purifying will be provided with one section dirty lock on the river that pollute, cut on the preceding river course of dirty lock and set out the mouth of a river, periphery is set behind the delivery port is provided with the sedimentation basin that blocks dirty grid corral, cut behind the dirty lock and on the river course spillway is set, the sedimentation basin water outlet has the biological reinforced sedimentation basin of fluitante to the breed of deep purifying, biological reinforced sedimentation basin water outlet is to the cloth ditch, the water outlet of cloth ditch is to the current wetland water distributor that is arranged at the current wetland bottom, the current wetland water distributor port of export is established plug, the tube wall of current wetland water distributor is provided with delivery port, current wetland water distributor higher slice is provided with limestone, cobble, the current wetland water outlet is to collecting gutter, the collecting gutter water outlet is to the subsurface runoff wetland, current wetland and subsurface runoff wetland are all planted and are implanted with wetland plant, the subsurface runoff wetland effluent is to downstream river course, purifying area periphery handicapping water cofferdam and the cofferdam that blocks water also is set behind spillway with current wetland and subsurface runoff wetland and sedimentation basin and the separation of biological reinforced sedimentation basin, the delivery port that on the river course, is provided with in the purifying area to the subsurface runoff wetland effluent to downstream river course, on, be provided with the height of water between the following flow process.
2, according to the described compound wetland gravity flow purifying contaminated river method of claim 1, it is characterized in that blocking the fan-shaped sedimentation basin of dirty grid corral, and long-armed tower crane is set, in time rubbish foreign material and the mud in the Salvage and Wreck Removal sedimentation basin at circle centre position with arc.
3, according to claim 1 or 2 described compound wetland gravity flow purifying contaminated river methods, it is characterized in that being equipped with diversion dam in biological reinforced sedimentation basin water outlet, collecting gutter water outlet place, the diversion dam water outlet is to next flow process, subsurface runoff wetland effluent place establishes branch water overflow weir to downstream river course, the subsurface runoff wetland can be established 2～3 grades, each inter-stage is established diversion dam, establishes branch water overflow weir between afterbody and the downstream river course.
4, according to claim 1 or 2 described compound wetland gravity flow purifying contaminated river methods, it is characterized in that current wetland water distributor two ends are exposed to respectively in cloth ditch and the collecting gutter.
5, according to the described compound wetland gravity flow purifying contaminated river method of claim 3, it is characterized in that current wetland water distributor two ends are exposed to respectively in cloth ditch and the collecting gutter.
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| CNB2004100149277A CN1272508C (en) | 2004-05-18 | 2004-05-18 | Composite wet land artesian polluted river water purifying method |
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| CNB2004100149277A CN1272508C (en) | 2004-05-18 | 2004-05-18 | Composite wet land artesian polluted river water purifying method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100506719C (en) * | 2007-07-02 | 2009-07-01 | 山东大学 | Undercurrent-surface current composite artificial marshland |
| CN102030413A (en) * | 2010-11-10 | 2011-04-27 | 河海大学 | Urban river step ecological revetment facility for purifying overflowed sewage and building method thereof |
| CN102107990A (en) * | 2010-12-28 | 2011-06-29 | 中国科学院南京地理与湖泊研究所 | Stepped riverine wetland water purification method |
| CN101704586B (en) * | 2009-11-17 | 2011-07-20 | 山东大学 | Nesting mixed flow constructed wetland |
| CN101492205B (en) * | 2009-03-02 | 2011-11-02 | 中国科学院南京地理与湖泊研究所 | Low-resistance anti-block vertical flow wetland structure |
| CN102775010A (en) * | 2012-07-19 | 2012-11-14 | 太仓东能环保设备有限公司 | Domestic sewage treatment device |
| CN102897976A (en) * | 2012-10-12 | 2013-01-30 | 常州大学 | Method for in-situ ecological treatment of town domestic waste water by using river and creek converging |
| CN103896462A (en) * | 2014-04-19 | 2014-07-02 | 岭南园林股份有限公司 | Wetland plant sewage disposal system and sewage disposal method |
| CN105347626A (en) * | 2015-11-23 | 2016-02-24 | 云南大学 | Trench processing system suitable for purifying southern plateau area farmland return water |
| CN107973494A (en) * | 2017-12-29 | 2018-05-01 | 中国水利水电科学研究院 | A kind of stream entering lake purification of water quality and water resource system for recycling |
| CN110228910A (en) * | 2019-06-28 | 2019-09-13 | 广东中绿园林集团有限公司 | A kind of channel deposits processing method and processing device |
| CN115466007A (en) * | 2022-08-26 | 2022-12-13 | 中国五冶集团有限公司 | Wetland park formula ecological clean system |
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2004
- 2004-05-18 CN CNB2004100149277A patent/CN1272508C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100506719C (en) * | 2007-07-02 | 2009-07-01 | 山东大学 | Undercurrent-surface current composite artificial marshland |
| CN101492205B (en) * | 2009-03-02 | 2011-11-02 | 中国科学院南京地理与湖泊研究所 | Low-resistance anti-block vertical flow wetland structure |
| CN101704586B (en) * | 2009-11-17 | 2011-07-20 | 山东大学 | Nesting mixed flow constructed wetland |
| CN102030413A (en) * | 2010-11-10 | 2011-04-27 | 河海大学 | Urban river step ecological revetment facility for purifying overflowed sewage and building method thereof |
| CN102030413B (en) * | 2010-11-10 | 2012-05-23 | 河海大学 | Urban river step ecological revetment facility for purifying overflowed sewage and building method thereof |
| CN102107990A (en) * | 2010-12-28 | 2011-06-29 | 中国科学院南京地理与湖泊研究所 | Stepped riverine wetland water purification method |
| CN102775010A (en) * | 2012-07-19 | 2012-11-14 | 太仓东能环保设备有限公司 | Domestic sewage treatment device |
| CN102897976A (en) * | 2012-10-12 | 2013-01-30 | 常州大学 | Method for in-situ ecological treatment of town domestic waste water by using river and creek converging |
| CN102897976B (en) * | 2012-10-12 | 2013-12-18 | 常州大学 | Method for in-situ ecological treatment of town domestic waste water by using river and creek converging |
| CN103896462A (en) * | 2014-04-19 | 2014-07-02 | 岭南园林股份有限公司 | Wetland plant sewage disposal system and sewage disposal method |
| CN103896462B (en) * | 2014-04-19 | 2015-06-24 | 岭南园林股份有限公司 | Wetland plant sewage disposal system and sewage disposal method |
| CN105347626A (en) * | 2015-11-23 | 2016-02-24 | 云南大学 | Trench processing system suitable for purifying southern plateau area farmland return water |
| CN107973494A (en) * | 2017-12-29 | 2018-05-01 | 中国水利水电科学研究院 | A kind of stream entering lake purification of water quality and water resource system for recycling |
| CN110228910A (en) * | 2019-06-28 | 2019-09-13 | 广东中绿园林集团有限公司 | A kind of channel deposits processing method and processing device |
| CN115466007A (en) * | 2022-08-26 | 2022-12-13 | 中国五冶集团有限公司 | Wetland park formula ecological clean system |
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| CN1272508C (en) | 2006-08-30 |
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