CN107662979A - A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system - Google Patents
A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system Download PDFInfo
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- CN107662979A CN107662979A CN201711037558.7A CN201711037558A CN107662979A CN 107662979 A CN107662979 A CN 107662979A CN 201711037558 A CN201711037558 A CN 201711037558A CN 107662979 A CN107662979 A CN 107662979A
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- spoil disposal
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- wet land
- anticlogging
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/341—Consortia of bacteria
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/347—Use of yeasts or fungi
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- Environmental & Geological Engineering (AREA)
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- Biodiversity & Conservation Biology (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mycology (AREA)
- Biotechnology (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system, including：Water inlet pipe, cloth water channel, wetland variation area, braiding channel, outlet pipe, wetland variation area bottom arranges several V-type mud-collecting slots, the V-type mud-collecting slot bottom centre is provided with discharge pipeline, the discharge pipeline is provided with water conservancy diversion ventilation recoil tube in vertical direction, spoil disposal tube valve is provided with one end of discharge pipeline and is communicated with spoil disposal canal, spoil disposal canal connects with sludge storage pool.The present invention utilizes sedimentation basin V-type spoil disposal principle in sewage treatment plant, construct a kind of horizontal plug-flow artificial wet land system of new Practical anti-clogging, sludge inside wet land filler can periodically be discharged, alleviate the susceptible to plugging technical problem of Performance of Constructed Wetlands Substrates system, extend its service life, its operation cost is reduced, treatment effeciency of increasing water quality, so as to reach preferable treatment effect.The system is simple to operate, significant effect, engineering practical value are high, easy to utilize.
Description
Technical field
The present invention relates to constructed wetland waste water treatment technology field, especially a kind of practical spoil disposal and anticlogging level
The structure of plug-flow artificial wet land system.
Background technology
Its construction of artificial swamp, which can be sketched, is：In certain length and width when depression of bottom surface gradient, by certain gradient
The filler such as stone matched somebody with somebody of filling selected class, plants that some process performances are good, and survival rate is high in filler topsoil, growth week
The water plant of phase length, forms a wetlands ecosystems, it is mainly by the absorption of matrix, plant absorption, microorganism conversion etc.
A series of nutriment in process degradation waters, it is a kind of unique matrix-plant-department of microbiology for being different from natural wetland
System.Surface current artificial wetland and drowned flow artificial wet land can be divided into according to construction.Surface current artificial wetland, waterpower path are pushed away with earth's surface
Based on stream；Drowned flow artificial wet land can be divided into horizontal plug-flow artificial swamp and vertical current constructed wetland according to flow direction.
Show that horizontal plug-flow artificial swamp exists for the running situation of domestic water laminar flow wastewater treatment case
Easily blocked after operation a period of time, sludge can not be arranged outside, cause wetland pond body internal water accumulation excessive, reduce its service life.China
The A of patent document CN 103951069 disclose it is a kind of solve the problems, such as the method for Wetland clogging, particularly：On time,
The wetland of blocking is stopped not 1 ~ 10 day；Spatially, it is several groups of wetlands are in parallel, make one or more wetland therein carry out stopping stopping
1 ~ 10 day；In wetland not is stopped, while earthworm is added, improve infiltration coefficient and blocked so as to alleviate.Method in the patent
Can only respite block, while need to stop stopping by wetland, take time and effort, effect is poor.Chinese patent literature CN 104030440
B discloses a kind of more fluidised form reinforcing composite under-current artificial wetland systems and its application method, the method for this patent and employed water
Solution acidification pool is arranged on before wet land system, but this method simply has certain effect to alleviating to block, it is impossible to thoroughly solution
Certainly the problem of Wetland clogging.The A of Chinese patent literature CN 105461064 disclose a kind of Novel anti-blockage vertical current constructed wetland
Waste Water Treatment, the vertical current constructed wetland include wetland main body, purifying plant, multidimensional filler, integrate draining pipe, water distribution spoil disposal
System（Including water distributor, perforated support plate, support column, discharge pipeline）, breather pipe.Sludge is collected using sludge autoprecipitation, but
It is the failure to effectively discharge the sludge of collection.The A of Chinese patent literature CN 106430597 disclose a kind of anti-blocking Serb
Work wet land system, including rinse-system and contaminant collecting system, still, whole process needs additionaling power draining pump, and can only be clear
The filter block in water jet region is washed, base sludge can not be discharged, fails fundamentally solve the problems, such as Wetland clogging.Therefore, develop
A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system, thoroughly discharging sludge inside wetland has important meaning
Justice.
The content of the invention
Present invention aims at provide a kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system, the present invention
Using sedimentation basin V-type spoil disposal principle in sewage treatment plant, it is artificial to construct a kind of new horizontal plug-flow of Practical anti-clogging
Wet land system, sludge inside wet land filler can be periodically discharged, alleviate the susceptible to plugging technical problem of Performance of Constructed Wetlands Substrates system, prolong
Its long service life, reduces its operation cost, treatment effeciency of increasing water quality, so as to reach preferable treatment effect.The system is grasped
Make simple, significant effect, engineering practical value height, it is easy to utilize.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system, including：Water inlet pipe, cloth water channel, wetland variation
Area, braiding channel, outlet pipe, wetland variation area bottom arrange several V-type mud-collecting slots, the V-type mud-collecting slot bottom centre
Provided with discharge pipeline, the body of discharge pipeline is provided with hole, and the discharge pipeline is provided with water conservancy diversion ventilation recoil tube in vertical direction,
One end of discharge pipeline is provided with spoil disposal tube valve and communicated with spoil disposal canal, and spoil disposal canal connects with sludge storage pool.
As currently preferred technical scheme, spoil disposal tube valve can use butterfly valve valve.
As currently preferred technical scheme, two wetland variation area units shareds, one spoil disposal canal.
As currently preferred technical scheme, the wetland variation area is V-type mud-collecting slot, antiseepage successively from the bottom up
Layer, bulk cobblestone layer, cobble lattice guest's gabion layer, core decontamination substrate layer, the core decontamination substrate layer surface plantation are aquatic
Plant.
As currently preferred technical scheme, the thickness of the cobble lattice guest gabion layer is 200 ~ 400mm, the cobble
Lattice guest's gabion layer is made up of lattice guest gabion and the filler being filled in lattice guest's gabion, and the lattice guest gabion is that one kind uses high-quality plating
Zinc steel wire, through the mechanical case structure body for being woven into hexagonal mesh sheet and combining, zinc-coated wire is wound in the hexagonal mesh sheet
The length of side is 5 ~ 7mm, and the length of side of no winding is 7 ~ 10mm；Block stone, cobblestone can be selected in filler in gabion box.
As currently preferred technical scheme, the core decontamination substrate thickness degree is 800 ~ 1200mm, by particle diameter 15 ~
30mm gravel, slag, corncob by volume 8:1:1 mixes.
As currently preferred technical scheme, the core decontamination substrate layer top layer is in interval 1.5m*1.5m position
Haydite module provided with appendix microorganism, the haydite module of the appendix microorganism is the hollow shape mould made of plastic grid
Block, built with microbe carrier ceramics filling, 8 ~ 15mm of particle diameter, the microbe species of the appendix are nitrobacteria, denitrification
Bacillus, flavobacterium aquatile, the mix bacterium agent of photosynthetic bacteria and saccharomycete.
As currently preferred technical scheme, the water plant is reed, Arundo donax, Siberian iris, Huang
One or more in calamus.
As currently preferred technical scheme, the V-type mud-collecting slot is reinforced concrete structure, and the both sides gradient is arranged to
5% ~ 8%, center is mud-collecting slot, above the V-type mud-collecting slot after laying HDPE anti-seepage geomembranes, is filled up with bulk cobblestone.
As currently preferred technical scheme, the caliber of the discharge pipeline is DN200 ~ 300mm, the body on discharge pipeline
Provided with hole, mutually perpendicular two lines on the body section of discharge pipeline are determined, symmetrical region takes the perforate to be on one wire
One group, it is one group that another line symmetrical region, which takes a perforate, on interval 200mm section, circulation packet perforate successively, hole
A diameter of 20 ~ 30mm.
As currently preferred technical scheme, the cloth water channel and braiding channel, the side wall close to wetland variation area
Provided with the two overflowing mouths of a river, it is alternately arranged.
Compared with prior art, beneficial effects of the present invention are：
（1）The present invention is transformed traditional artificial swamp, is increased sludge collection and discharge system inside wetland newly, can periodically be arranged
Go out sludge inside wetland, blockage problem caused by alleviating artificial swamp longtime running, artificial swamp is kept optimal processing
Power, waste water control effect is improved, extends its service life.
（2）Units shared one spoil disposal canal in Liang Ge wetland variations area of the present invention, reduce investment；Can be by adjusting wetland variation
The quantity and size of area's unit, according to combination in series or in parallel, with suitable for different treatment scales.
（3）The horizontal plug-flow artificial wet land system of the present invention is simple to operate, anti-clogging significant effect, engineering practical value are high,
It is easy to utilize.
Brief description of the drawings
Fig. 1 is reclaimed water laminar flow artificial wet land system floor plan of the present invention；
Fig. 2 is reclaimed water laminar flow artificial wet land system structural representation of the present invention；
Fig. 3 is the partial enlarged drawing of A in Fig. 2；
Fig. 4 is the structural representation in spoil disposal canal；
Fig. 5 is lattice guest's gabion box structural representation in the present invention；
Fig. 6 is cloth water channel water distribution system structural representation in the present invention；
Fig. 7 a are the hole arrangement schematic diagram on discharge pipeline in the present invention；
Inside structure schematic diagram after Fig. 7 b divide half vertically for discharge pipeline in the present invention；
Fig. 7 c divide half posterolateral stucture schematic diagram vertically for discharge pipeline in the present invention；
In figure：1- water inlet pipes, 2- cloth water channels, 3- wetland variations area, 4- braiding channels, 5- outlet pipes, 6- discharge pipelines, 7- spoil disposal canals,
8- sludge storage pools, 9- water conservancy diversion ventilation recoil tube, 10- cobble lattice guest's gabion layers, 11- core decontamination substrate layers, the aquatic plants of 12-
Thing, 13- impervious barriers, 14-V type mud-collecting slots, 15- appendix microorganism haydite modules, 16- spoil disposal tube valves, 17- steel wires, 18- holes
Hole, 19- gaps.
Embodiment
With reference to embodiment, the present invention is described in further detail.
Fig. 1 ~ Fig. 7 c show the tool of a kind of practical spoil disposal of the invention and anticlogging horizontal plug-flow artificial wet land system
Body embodiment.Refering to Fig. 1 ~ Fig. 7 c, the horizontal plug-flow artificial wet land system includes：Water inlet pipe 1, cloth water channel 2, wetland variation area
3rd, braiding channel 4, outlet pipe 5, waste water enters wetland variation area 3 from water inlet pipe 1 through cloth water channel 2, through the purified treatment of wetland variation area 3
Flow into braiding channel 4, then be expelled to by outlet pipe 5 in further cleaning treatment system afterwards.With reference to figure 2, the wetland variation
The bottom of area 3 arranges several V-type mud-collecting slots 14, and V-type mud-collecting slot 14 is arranged perpendicular to water (flow) direction, arranged in parallel with cloth water channel 2,
The bottom centre of V-type mud-collecting slot 14 is provided with discharge pipeline 6, and the body of discharge pipeline 6 is provided with hole 18, for collecting sludge side by side
Go out, the discharge pipeline 6 vertical direction be provided with water conservancy diversion ventilation recoil tube 9, water conservancy diversion ventilation recoil tube 9 effect be by bottom with
Extraneous air is connected, and spoil disposal tube valve 16 is provided with one end of discharge pipeline 6 and is communicated with spoil disposal canal 7, the other end is at wetland
The side wall in area 3 is managed, the sludge that discharge pipeline 6 is collected is expelled in spoil disposal canal 7 through spoil disposal tube valve 16, and spoil disposal canal 7 stores with sludge
Pond 8 connects.Wherein, spoil disposal tube valve 16 can use butterfly valve valve.
In the horizontal plug-flow artificial swamp running of the present invention, spoil disposal tube valve 16 in spoil disposal canal 7 is periodically opened, utilization is quiet
The inside sludge of water pressure discharge artificial wetland treatment area 3 is finally discharged into sludge storage pool 8 to spoil disposal canal 7；In sludge storage pool
OettIed sewage time cloth water channel 2 is again introduced into wetland variation area 3 and purified in 8, and sludge delivers to clearly refuse landfill.
Refering to Fig. 1, in the present embodiment, two wetland variation area units 3 share a spoil disposal canal 7, reach reduction
The purpose of investment., can be by adjusting the quantity and size of wetland variation area unit, by the level of the present invention during practical application
Plug-flow artificial wet land system is according to combination in series or in parallel, with suitable for different treatment scales.
Refering to Fig. 2 and Fig. 3, in the present embodiment, the wetland variation area 3 is V-type mud-collecting slot 14 successively from the bottom up, prevented
Infiltration layer 13, bulk cobblestone layer, cobble lattice guest's gabion layer 10, core decontamination substrate layer 11, the core decontamination substrate layer surface
Planting aquatic plants 12.For close to the wetland variation area 3 of cloth water channel 2 and braiding channel 4, in order to prevent debris block water distribution mouth,
Inlet, impervious barrier 13 among core decontamination substrate layer 11 with setting cobble lattice guest's gabion layer 10.
Refering to 2 and Fig. 5, in the present embodiment, the thickness of cobble lattice guest's gabion layer 10 is 200 ~ 400mm, the ovum
Stone lattice guest's gabion layer 10 is made up of lattice guest gabion and the filler being filled in lattice guest's gabion, and the lattice guest gabion is a kind of using excellent
Matter zinc-coated wire 17, the case structure body that hexagonal mesh sheet combines is woven into through machinery, long 1 ~ 3m, wide 1 ~ 2m, high by 0.2 ~
0.4m；The length of side that zinc-coated wire 17 is wound in the hexagonal mesh sheet is 5 ~ 7mm, and the length of side of no winding is 7 ~ 10mm；In gabion box
Filler can be selected block stone, cobblestone, homogeneous, reach more than 80% in 15 ~ 30cm without crack, non-elegance and talent, size controlling.
In the present embodiment, the thickness of core decontamination substrate layer 11 is 800 ~ 1200mm, by 15 ~ 30mm of particle diameter gravel
Stone, slag, corncob by volume 8:1:1 mixes.As another embodiment of the invention, the core purifies base
The top layer of matter layer 11 is provided with appendix microorganism haydite module 15, the appendix microorganism haydite mould in interval 1.5m*1.5m position
Block 15 is the hollow shape module made of plastic grid, built with microbe carrier ceramics filling, 8 ~ 15mm of particle diameter, the appendix
Microbe species be nitrobacteria, denitrification bacillus, flavobacterium aquatile, the mix bacterium agent of photosynthetic bacteria and saccharomycete.
As one embodiment of the present invention, the water plant 12 be reed, Arundo donax, Siberian iris,
One or more in yellow flag, planting density are 12 ~ 24 plants/m2, plant height is 60 ~ 150cm, and tether panel is native.
As one embodiment of the present invention, the V-type mud-collecting slot 14 is reinforced concrete structure, and the both sides gradient is set
For 5% ~ 8%, center is mud-collecting slot, overall V-shaped structure, realizes the flow collection of sludge.Another as the present invention is implemented
Mode, the top of the V-type mud-collecting slot 14 laying specification is 350g/m2HDPE anti-seepage geomembranes after, filled up with bulk cobblestone,
Form bulk cobblestone layer.
Refering to Fig. 7 a ~ 7c, the caliber of the discharge pipeline 6 is DN200 ~ 300mm, and the body on discharge pipeline 6 is provided with hole 18,
Surrounding replaces perforate, in other words, it is determined mutually perpendicular two lines on the body section of discharge pipeline 6, on one wire symmetrically
It is one group that region, which takes a perforate, and it is one group that another line symmetrical region, which takes a perforate, on interval 200mm section, is circulated successively
It is grouped perforate, a diameter of 20 ~ 30mm of hole 18., can be by adjusting quantity, caliber and the hole of discharge pipeline 6 during practical application
Hole size, with suitable for different influent qualities, water, the situation of change of wetland unit size.
Refering to Fig. 6, the cloth water channel 2 and braiding channel 4, in order to reach uniform water distribution, the side wall close to wetland variation area 3
Body is provided with the two overflowing mouths of a river 19, is alternately arranged, two 50 ~ 70cm of row's spacing；The upper overflowing mouth of a river and canal apex distance from for 20 ~ 30cm, under
The overflowing mouth of a river is 40 ~ 50cm with canal bottom distance；Described gap unit size is 10*50cm, and gap spacing is 50cm.Collection
The collecting system of water channel 4 is identical with the water distribution system of cloth water channel 2.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system, including：Water inlet pipe, cloth water channel, at wetland
Manage area, braiding channel, outlet pipe, it is characterised in that wetland variation area bottom arranges several V-type mud-collecting slots, the V-type collection
Mud groove bottom centre is provided with discharge pipeline, and the body of discharge pipeline is provided with hole, and the discharge pipeline is provided with water conservancy diversion in vertical direction
Ventilation recoil tube, spoil disposal tube valve is provided with one end of discharge pipeline and is communicated with spoil disposal canal, spoil disposal canal connects with sludge storage pool.
2. a kind of practical spoil disposal according to claim 1 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, spoil disposal tube valve can use butterfly valve valve.
3. a kind of practical spoil disposal according to claim 1 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, two wetland variation area units shareds, one spoil disposal canal.
4. a kind of practical spoil disposal according to claim 1 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the wetland variation area is V-type mud-collecting slot, impervious barrier, bulk cobblestone floor, cobble lattice guest's gabion successively from the bottom up
Layer, core decontamination substrate layer, the core decontamination substrate layer surface planting aquatic plants.
5. a kind of practical spoil disposal according to claim 4 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the thickness of the cobble lattice guest gabion layer is 200 ~ 400mm, and cobble lattice guest's gabion layer is by lattice guest gabion and is filled in
Filler composition in lattice guest's gabion, the lattice guest gabion are a kind of using high-quality zinc-coated wire, and hexagonal mesh sheet is woven into through machinery
The case structure body combined, the length of side that zinc-coated wire is wound in the hexagonal mesh sheet be 5 ~ 7mm, the length of side of no winding is 7 ~
10mm；Block stone, cobblestone can be selected in filler in gabion box.
6. a kind of practical spoil disposal according to claim 4 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the core decontamination substrate thickness degree is 800 ~ 1200mm, and volume is pressed by 15 ~ 30mm of particle diameter gravel, slag, corncob
Than 8:1:1 mixes.
7. a kind of practical spoil disposal according to claim 4 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the core decontamination substrate layer top layer is provided with the haydite module of appendix microorganism in interval 1.5m*1.5m position, described
The haydite module of appendix microorganism is the hollow shape module made of plastic grid, built with microbe carrier ceramics filling, grain
8 ~ 15mm of footpath, the microbe species of the appendix are nitrobacteria, denitrification bacillus, flavobacterium aquatile, photosynthetic bacteria and
The mix bacterium agent of saccharomycete.
8. a kind of practical spoil disposal according to claim 4 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the water plant is the one or more in reed, Arundo donax, Siberian iris, yellow flag.
9. a kind of practical spoil disposal according to claim 1 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the V-type mud-collecting slot is reinforced concrete structure, and the both sides gradient is arranged to 5% ~ 8%, and center is mud-collecting slot, the V-type collection
Above mud groove after laying HDPE anti-seepage geomembranes, filled up with bulk cobblestone.
10. a kind of practical spoil disposal according to claim 1 and anticlogging horizontal plug-flow artificial wet land system, its feature
It is, the caliber of the discharge pipeline is DN200 ~ 300mm, and the body on discharge pipeline is provided with hole, determines that the body of discharge pipeline breaks
Mutually perpendicular two lines on face, it is one group that symmetrical region, which takes a perforate, on one wire, another on interval 200mm section
Bar line symmetrical region take a perforate be one group, successively circulation packet perforate, a diameter of 20 ~ 30mm of hole, the cloth water channel with
Side wall of the braiding channel close to wetland variation area is provided with the two overflowing mouths of a river, is alternately arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711037558.7A CN107662979A (en) | 2017-10-30 | 2017-10-30 | A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system |
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| CN201711037558.7A CN107662979A (en) | 2017-10-30 | 2017-10-30 | A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system |
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Cited By (4)
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|---|---|---|---|---|
| CN108609736A (en) * | 2018-05-18 | 2018-10-02 | 中国科学院南京地理与湖泊研究所 | A kind of horizontal flow artificial wetland anti-clogging purifier |
| CN110540298A (en) * | 2019-09-27 | 2019-12-06 | 中国科学院水生生物研究所 | Utilize constructed wetland system of dredging pipe prevention and cure jam |
| CN113582494A (en) * | 2021-08-21 | 2021-11-02 | 谷媛媛 | Constructed wetland structure with desilting mediation function |
| CN113683197A (en) * | 2021-08-16 | 2021-11-23 | 安徽新宇生态产业股份有限公司 | Efficient nitrogen and phosphorus removal anti-blocking constructed wetland system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609736A (en) * | 2018-05-18 | 2018-10-02 | 中国科学院南京地理与湖泊研究所 | A kind of horizontal flow artificial wetland anti-clogging purifier |
| CN110540298A (en) * | 2019-09-27 | 2019-12-06 | 中国科学院水生生物研究所 | Utilize constructed wetland system of dredging pipe prevention and cure jam |
| CN110540298B (en) * | 2019-09-27 | 2024-08-09 | 中国科学院水生生物研究所 | Constructed wetland system for preventing and treating blockage by using dredging pipe |
| CN113683197A (en) * | 2021-08-16 | 2021-11-23 | 安徽新宇生态产业股份有限公司 | Efficient nitrogen and phosphorus removal anti-blocking constructed wetland system |
| CN113582494A (en) * | 2021-08-21 | 2021-11-02 | 谷媛媛 | Constructed wetland structure with desilting mediation function |
| CN113582494B (en) * | 2021-08-21 | 2024-05-14 | 谷媛媛 | Constructed wetland structure with dredging function |
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