CN108706738A - A kind of high efficient block vertical flow artificial wetland sewage treatment system - Google Patents
A kind of high efficient block vertical flow artificial wetland sewage treatment system Download PDFInfo
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- CN108706738A CN108706738A CN201810767137.8A CN201810767137A CN108706738A CN 108706738 A CN108706738 A CN 108706738A CN 201810767137 A CN201810767137 A CN 201810767137A CN 108706738 A CN108706738 A CN 108706738A
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- wetland
- bed body
- packing layer
- sewage
- wetland bed
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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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- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
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- Biodiversity & Conservation Biology (AREA)
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of high efficient block vertical flow artificial wetland sewage treatment systems, are divided into wetland bed body upper and lower two layers by perforated baffle, and using the big particle of specific surface area and porosity as filler, lower layer's packed density is less than the hand-stuff of water on upper layer.Rake tooth-shaped aeration tube is arranged in wetland bed body the upper and lower, when the hydraulic conductivity ability of wetland bed body is remarkably decreased, it is pumped by external air-blowing and carries out high intensity short time aeration in the limited space in wetland the upper and lower, keep filler loose using flow perturbation, solution-off agent is added while aeration in sewage, make to be deposited on solid suspension extra on filler, hardly degraded organic substance and microorganism and its extracellular polymeric fall off after be discharged by wetland lower end mud discharging mouth, restore the hydraulic conductivity performance of wetland bed body.Engineering difficulty of the present invention is low and operational management is convenient, not only ensure that the treatment effect of sewage but also had solved the susceptible to plugging problem of vertical current constructed wetland long-time continuous operation.
Description
Technical field
The invention belongs to technical field of sewage, and in particular at a kind of high efficient block vertical current constructed wetland sewage
Reason system.
Background technology
Vertical current constructed wetland is that a kind of floor space is small, and the high sewage purification system for the treatment of effeciency can effectively remove dirt
Solid suspension, organic pollution, total nitrogen, total phosphorus and heavy metal in water etc., most common form are vertical downlink person who lives in exile
Work wetland, i.e. sewage enter wet land system from surface water flow, by wet land filler seepage flow to bottom.The good waterpower of wetland bed body
Conductive performance be ensure the efficient water purification of vertical current constructed wetland important prerequisite, but long-time continuous operation frequently can lead to it is wet
Ground blocks, and the infiltration coefficient of filler reduces after blocking, and the seepage velocity of sewage slows down, and it is unsmooth or even cause to fill out to easily cause flow
Expect the serious ponding in surface layer, finally declines the water purification ability of wetland, while also having seriously affected the normal use longevity of artificial swamp
Life.
Artificial swamp substrate clogging can be divided into three phases, and the first stage is happened at the initial operating stage in wetland, wet at this time
The infiltration of ground matrix slowly declines, but apparent clogging does not occur.In second stage, the infiltration rate of wet land filler
Stablize and decline, the sewage purification ability of wetland gradually decays, until it is the phase III Wetland Substrate continuous surface ponding occur then.It is dirty
The accumulation of solid suspension and hardly degraded organic substance in water is the main reason for Wetland Substrate blocks, in addition micro- life in wetland
The accumulation of object and its extracellular polymeric in Wetland Substrate hole also accelerates the blocking of wetland.
Currently, using Wastewater Pretreatment, replacing wet filler, stopping bed and stop to make that with the means such as have holidays by turns although wetland can be slowed down
It blocks, but there is the shortcomings of cost is higher and complicated for operation in practical applications.Therefore, pass through rational structure design and operation
Optimization prevents the generation of Wetland clogging.
Invention content
The purpose of the present invention is provide a kind of low input, easy to operate and efficient blocking for the longtime running of artificial swamp
Solution.
In order to achieve the above object, the technical solution of the present invention is to provide a kind of high efficient block vertical current constructed wetlands
Sewage disposal system, the artificial swamp are vertical down flow artificial wet field, including wetland bed body, which is characterized in that the dirt
Water treatment system includes being set to wetland bed internal porous barrier, and wetland bed body is divided into upper and lower two layers by porous barrier, upper layer packet
Include packing layer, the interior filler big filled with specific surface area and porosity of upper packing layer, under lower layer includes lower packing layer and is located at
Mud discharging area below packing layer, the interior filler for being less than water filled with density of lower packing layer；
Be respectively equipped with rake tooth-shaped aeration tube in upper packing layer and lower packing layer, rake tooth-shaped aeration tube be located at wetland bed body
Outer air-blowing pump is connected, and when the hydraulic conductivity ability of wetland bed body is remarkably decreased, is pumped via rake tooth-shaped aeration tube by air-blowing
Higher-strength short time aeration is carried out in the upper and lower of wetland bed body, makes upper packing layer and lower packing layer using flow perturbation
Filler it is loose, solution-off agent is added while aeration in sewage, makes to be deposited on solid suspension extra on filler, difficult to degrade
Organic matter and microorganism and its extracellular polymeric are discharged after falling by mud discharging area, restore the hydraulic conductivity of wetland bed body
Energy.
Preferably, the filler of the upper packing layer is the haydite or volcanic rock particle of grain size 6-8mm；The lower packing layer
Filler is hand-stuff.
Preferably, the hand-stuff is the porous suspended Ball-type packing of polypropylene of polyvinyl hydroformylation fiber, a diameter of 80-
100mm, density are less than 1.0g/cm3。
Preferably, the porous barrier is glass steel material, and thickness 3-5cm, aperture 3-5mm, hole ratio is not less than
70%.
Preferably, the top of the wetland bed body is equipped with PVC water distributors, and PVC water distributors are connected with external water tank, water distribution
Pipe is the rake tooth-shaped structure of multi-direction punching；It is equipped with artificial wetland effluent mouth in the bottom of the wetland bed body, artificial swamp goes out
The mouth of a river is higher than the mud discharging mouth 15-10cm in the mud discharging area.
Preferably, kind is implanted with the strong emergent aquactic plant of water purification ability at the top of the wetland bed body.
Preferably, the rake tooth-shaped aeration tube is formed in parallel by two groups of rake tooth-shaped PVC gas-guide tubes arranged in parallel, two groups of rakes
The same air-blowing pump of tooth form PVC gas-guide tubes connection；Vertical range between planes where two groups of rake tooth-shaped PVC gas-guide tubes is
20-30cm, the spacing of adjacent two pipe is 10-15cm in every group of rake tooth-shaped PVC gas-guide tube, and gas-guide tube aperture 2-5mm, hole ratio is not
Less than 70%, micropore aeration pipe, stomatal frequency 1000- are cased with outside every gas-guide tube in every group of rake tooth-shaped PVC gas-guide tube
1200/m.
Preferably, it when wetland bed body normal operation, is pumped via the rake tooth-shaped aeration tube in wetland by the air-blowing
The upper and lower of bed body carry out intermittent aerating, and the degradation for promoting wetland to be stained into Organic substance in water slows down Wetland clogging, simultaneously
Promote the removal of total nitrogen in sewage.
Another technical solution of the present invention restoring wetland bed body there is provided a kind of based on above-mentioned sewage disposal system
Hydraulic conductivity performance method, which is characterized in that include the following steps：
The first step, the water inlet of stopping wetland bed body simultaneously will be wetland bed by the artificial wetland effluent mouth positioned at wetland bed body lower layer
After the sewage discharge retained in body, the valve of artificial wetland effluent mouth is closed；
Second step adds solution-off agent NaClO into the sewage of the water tank for supplying water to wetland bed body3, followed by water
Sewage in case continues to supply water to wetland bed body, until the height of sewage is higher than upper packing layer 2-3cm；
Third walks, and the air-blowing pump being connected with the rake tooth-shaped aeration tube in upper packing layer and lower packing layer is opened simultaneously, to upper
Packing layer and lower packing layer carry out high intensity aeration；
4th step, sewage pass through the mud discharging mouth in mud discharging area so that filler after wetland bed body stops 30 minutes
The sludge outflow that surface falls off.
The present invention is vertical down flow artificial wet field, and wetland bed body is divided into upper and lower two layers point by perforated baffle, upper layer with
Specific surface area and the big haydite or volcanic rock particle of porosity ensure that the treatment effect of sewage, lower layer's packed density are small as filler
It is set to float in the hand-stuff of water waterborne, and there are mud discharging areas.Aeration tube is arranged in wetland bed body the upper and lower, when
When the hydraulic conductivity ability of wetland bed body is remarkably decreased, pumped in the limited space in wetland the upper and lower by external air-blowing
Higher-strength short time aeration is carried out, keeps filler loose using flow perturbation, solution-off agent is added while aeration in sewage, makes
It is deposited on solid suspension extra on filler, hardly degraded organic substance and microorganism and its extracellular polymeric falls behind by wetland lower end
Mud discharging mouth is discharged, and restores the hydraulic conductivity performance of wetland bed body.
The present invention has following features：
1) present invention is big using specific surface area and porosity on wetland upper layer by rational structure design and running optimizatin
Filler ensure wastewater treatment efficiency；It, can be with using the agitation of flow on the artificial lightweight filler that lower layer uses is bubbled through the water column
Delay Wetland clogging；The sludge recovery area of lower level floor setting may be implemented the precipitation of excessive mud in wet land filler gap, receive
Collection and discharge；
2) present invention can effectively remove the solid for being deposited on filler excess surface by being aerated and solution-off agent is used in combination
Suspended matter, hardly degraded organic substance and microorganism and its extracellular polymeric restore the hydraulic conductivity of vertical-flow wetland in a short time
Performance.
Description of the drawings
Fig. 1 is the device of the invention schematic diagram；
Fig. 2 is the vertical view of the present invention；
Fig. 3 is the schematic diagram of aeration tube of the present invention, in figure：1, air-blowing pump 2, air valve 3, aeration tube 4, water distributor 5, wet
Ground plant 6, water inlet butterfly valve 7, water tank 8, upper packing layer 9, perforated baffle 10, lower packing layer 11, water outlet 12, sludge
Discharge region 13, mud discharging mouth.
Specific implementation mode
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is coordinated to be described in detail below.
Referring also to attached drawing 1-3, in a kind of high efficient block vertical current constructed wetland sewage disposal system provided by the invention
In the device of one specific implementation mode of system, artificial swamp is vertical down flow artificial wet field, including wetland bed body.By this hair
Wetland bed body is divided into upper and lower two layers by bright perforated baffle 9.Perforated baffle 9 be glass steel material, thickness 3-5cm, aperture 3mm,
Hole ratio is 70%.Upper layer includes upper packing layer 8, the interior haydite big filled with specific surface area and porosity of upper packing layer 8, haydite
Grain size be 6-8mm.Lower layer includes lower packing layer 10 and mud discharging area 12.It is less than water filled with density in lower packing layer 10
Artificial lightweight filler so that the filler of lower packing layer 10 floats on waterborne, and in the present embodiment, the filler of lower packing layer 10 is polyvinyl
The porous suspended Ball-type packing of polypropylene of hydroformylation fiber, diameter 80mm, filling rate 80%.In upper packing layer 8 and lower packing layer
Rake tooth-shaped aeration tube 3 is arranged in 10.Rake tooth-shaped aeration tube 3 is that two groups of rake tooth-shaped PVC gas-guide tubes arranged in parallel are formed in parallel, even
Connect same air-blowing pump 1.Vertical range between plane where two groups of rake tooth-shaped PVC gas-guide tubes is 20cm, and every group of rake tooth-shaped PVC is led
The spacing of adjacent two pipe is 10cm in tracheae, gas-guide tube aperture 2mm, and hole ratio 70% is led for every in rake tooth-shaped PVC gas-guide tubes
Micropore aeration pipe, 1000-1200/m of stomatal frequency are cased with outside tracheae.
The top layout of wetland bed body has PVC water distributors 4, PVC water distributors 4 to be connected with external water tank 7.PVC water distributors 4
For the rake tooth-shaped structure of multi-direction punching.Mud discharging area 12 is provided with sewage outlet 11 and mud discharging mouth 13, and sewage goes out
The height at the mouth of a river 11 is higher than the height 5cm of mud discharging mouth 13.It also plants the strong reed of water purification ability and makees in the top of wetland bed body
For wetland plant 5.
When wetland bed body normal operation, it is aerated 1 hour in wetland the upper and lower daily by external air-blowing pump 1,
Aeration intensity 600L/m2H promotes the degradation that organic matter stains in wetland, slows down Wetland clogging, while can promote in sewage
The removal of ammonia nitrogen and total nitrogen.
When the hydraulic conductivity ability of wetland bed body is remarkably decreased, by air-blowing pump 1 and rake tooth-shaped aeration tube 3 wetland bed
1500L/m is carried out in the limited space in the upper and lower of body2The high intensity of h is aerated, and is made between filler using flow perturbation
Generate friction, be deposited on the extra solid suspension in filler surface layer, hardly degraded organic substance and microorganism and its extracellular polymeric because
This falls off, and is discharged by mud discharging mouth 13, while loose filler, reaches the hydraulic conductivity performance for restoring wetland bed body
Purpose.
When artificial swamp hydraulic conductivity performance is substantially reduced, concrete operations are as follows：
The first step closes 11 valve of water outlet after stopping water inlet and the sewage retained in wetland being discharged by water outlet 11.
Second step adds solution-off agent NaClO into the sewage of water tank 73To a concentration of 6% (W/V), then turn on into water butterfly
Valve 6 continues to intake, until sewage is higher than upper packing layer 3cm.
Third walks, and opens simultaneously the air-blowing pump 1 being connected with the rake tooth-shaped aeration tube 3 in upper packing layer and lower packing layer, right
Upper packing layer and lower packing layer carry out 1500L/m2The high intensity of h is aerated, and aeration time is 1 hour.
4th step, after sewage stops 30 minutes in wetland bed body, sequence opens the butterfly of mud discharging mouth 13 and water distributor 4
Valve 6, the sludge that filler surface is fallen off flow out.
Foregoing description is only proposed as the enforceable technical solution of the present invention, not as to the single of its technical solution itself
Restrictive condition.
Claims (9)
1. a kind of high efficient block vertical flow artificial wetland sewage treatment system, the artificial swamp is vertical downstream Manual moist
Ground, including wetland bed body, which is characterized in that the sewage disposal system includes being set to wetland bed internal porous barrier, porous
Wetland bed body is divided into upper and lower two layers by partition board, and upper layer includes upper packing layer, and specific surface area and porosity are filled in upper packing layer
Big filler, lower layer include lower packing layer and the mud discharging area below lower packing layer, and density is filled in lower packing layer
Less than the filler of water；
Be respectively equipped with rake tooth-shaped aeration tube in upper packing layer and lower packing layer, rake tooth-shaped aeration tube with positioned at wetland bed external
Air-blowing pump is connected, and when the hydraulic conductivity ability of wetland bed body is remarkably decreased, is pumped via rake tooth-shaped aeration tube wet by air-blowing
The upper and lower of ground bed body carry out higher-strength short time aeration, make filling out for upper packing layer and lower packing layer using flow perturbation
Expect loose, add solution-off agent while aeration in sewage, makes to be deposited on solid suspension extra on filler, difficult to degrade organic
Object and microorganism and its extracellular polymeric are discharged after falling by mud discharging area, restore the hydraulic conductivity performance of wetland bed body.
2. a kind of high efficient block vertical flow artificial wetland sewage treatment system as described in claim 1, which is characterized in that institute
The filler for stating packing layer is the haydite or volcanic rock particle of grain size 6-8mm；The filler of the lower packing layer is hand-stuff.
3. a kind of high efficient block vertical flow artificial wetland sewage treatment system as claimed in claim 2, which is characterized in that institute
The porous suspended Ball-type packing of polypropylene that hand-stuff is polyvinyl hydroformylation fiber, a diameter of 80-100mm are stated, density is less than 1.0g/
cm3。
4. a kind of high efficient block vertical flow artificial wetland sewage treatment system as described in claim 1, which is characterized in that institute
It is glass steel material to state porous barrier, and thickness 3-5cm, aperture 3-5mm, hole ratio is not less than 70%.
5. a kind of high efficient block vertical flow artificial wetland sewage treatment system as described in claim 1, which is characterized in that institute
The top for stating wetland bed body is equipped with PVC water distributors, and PVC water distributors are connected with external water tank, and water distributor is multi-direction punching
Rake tooth-shaped structure；It is equipped with artificial wetland effluent mouth in the bottom of the wetland bed body, artificial wetland effluent mouth is higher than the sludge
The mud discharging mouth 15-10cm of discharge region.
6. a kind of high efficient block vertical flow artificial wetland sewage treatment system as described in claim 1, which is characterized in that institute
It states kind at the top of wetland bed body and is implanted with the strong emergent aquactic plant of water purification ability.
7. a kind of high efficient block vertical flow artificial wetland sewage treatment system as described in claim 1, which is characterized in that institute
It states rake tooth-shaped aeration tube to be formed in parallel by two groups of rake tooth-shaped PVC gas-guide tubes arranged in parallel, two groups of rake tooth-shaped PVC gas-guide tubes connections
The same air-blowing pump；Vertical range between plane where two groups of rake tooth-shaped PVC gas-guide tubes is 20-30cm, every group of rake tooth-shaped
The spacing of adjacent two pipe is 10-15cm in PVC gas-guide tubes, and gas-guide tube aperture 2-5mm, hole ratio is not less than 70%, every group of rake teeth
Micropore aeration pipe, 1000-1200/m of stomatal frequency are cased with outside every gas-guide tube in shape PVC gas-guide tubes.
8. a kind of high efficient block vertical flow artificial wetland sewage treatment system as described in claim 1, which is characterized in that when
When wetland bed body normal operation, by the air-blowing pump via the rake tooth-shaped aeration tube the upper and lower of wetland bed body into
Row intermittent aerating promotes the degradation stained into Organic substance in water of wetland, slows down Wetland clogging, while promoting going for total nitrogen in sewage
It removes.
9. a kind of method of hydraulic conductivity performance that restoring wetland bed body based on sewage disposal system described in claim 1,
It is characterized in that, includes the following steps：
The first step, the water inlet of stopping wetland bed body simultaneously will be in wetland bed bodies by the artificial wetland effluent mouth positioned at wetland bed body lower layer
After the sewage discharge retained, the valve of artificial wetland effluent mouth is closed；
Second step adds solution-off agent NaClO into the sewage of the water tank for supplying water to wetland bed body3, followed by water tank
Sewage continues to supply water to wetland bed body, until the height of sewage is higher than upper packing layer 2-3cm；
Third walks, and the air-blowing pump being connected with the rake tooth-shaped aeration tube in upper packing layer and lower packing layer is opened simultaneously, to upper filler
Layer and lower packing layer carry out high intensity aeration；
4th step, sewage pass through the mud discharging mouth in mud discharging area so that filler surface after wetland bed body stops 30 minutes
The sludge outflow to fall off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767137.8A CN108706738A (en) | 2018-07-12 | 2018-07-12 | A kind of high efficient block vertical flow artificial wetland sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767137.8A CN108706738A (en) | 2018-07-12 | 2018-07-12 | A kind of high efficient block vertical flow artificial wetland sewage treatment system |
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| Publication Number | Publication Date |
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| CN108706738A true CN108706738A (en) | 2018-10-26 |
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| CN201810767137.8A Pending CN108706738A (en) | 2018-07-12 | 2018-07-12 | A kind of high efficient block vertical flow artificial wetland sewage treatment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665637A (en) * | 2019-02-20 | 2019-04-23 | 广东紫方环保技术有限公司 | A kind of river regulation aeration and biological dam |
| CN110862187A (en) * | 2019-08-16 | 2020-03-06 | 重庆工程职业技术学院 | Artificial wetland for treating industrial wastewater |
| CN111559800A (en) * | 2020-03-24 | 2020-08-21 | 苏州金螳螂园林绿化景观有限公司 | Spraying and oxygen increasing system of subsurface flow constructed wetland |
| CN116553737A (en) * | 2023-06-05 | 2023-08-08 | 悉地（苏州）勘察设计顾问有限公司 | Matrix type parallel arrangement subsurface wetland water flow control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254489Y (en) * | 2008-03-25 | 2009-06-10 | 华南理工大学 | Down-flow type double deck filter material aerating biological filter |
| CN202246264U (en) * | 2011-09-22 | 2012-05-30 | 田海丽 | Strong-oxygen-supplied constructed wetland |
| CN103708623A (en) * | 2014-01-03 | 2014-04-09 | 东华大学 | Vertical flow artificial wetland aerobic denitrification system for intermittent operation |
| CN204079602U (en) * | 2014-06-04 | 2015-01-07 | 东华大学 | A kind of artificial swamp of assisting aeration and solving blocking with back flushing measure |
| CN104310576A (en) * | 2014-10-29 | 2015-01-28 | 深圳职业技术学院 | Improved aeration biological filter and sewage treatment system comprising biological filter |
-
2018
- 2018-07-12 CN CN201810767137.8A patent/CN108706738A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254489Y (en) * | 2008-03-25 | 2009-06-10 | 华南理工大学 | Down-flow type double deck filter material aerating biological filter |
| CN202246264U (en) * | 2011-09-22 | 2012-05-30 | 田海丽 | Strong-oxygen-supplied constructed wetland |
| CN103708623A (en) * | 2014-01-03 | 2014-04-09 | 东华大学 | Vertical flow artificial wetland aerobic denitrification system for intermittent operation |
| CN204079602U (en) * | 2014-06-04 | 2015-01-07 | 东华大学 | A kind of artificial swamp of assisting aeration and solving blocking with back flushing measure |
| CN104310576A (en) * | 2014-10-29 | 2015-01-28 | 深圳职业技术学院 | Improved aeration biological filter and sewage treatment system comprising biological filter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665637A (en) * | 2019-02-20 | 2019-04-23 | 广东紫方环保技术有限公司 | A kind of river regulation aeration and biological dam |
| CN110862187A (en) * | 2019-08-16 | 2020-03-06 | 重庆工程职业技术学院 | Artificial wetland for treating industrial wastewater |
| CN111559800A (en) * | 2020-03-24 | 2020-08-21 | 苏州金螳螂园林绿化景观有限公司 | Spraying and oxygen increasing system of subsurface flow constructed wetland |
| CN116553737A (en) * | 2023-06-05 | 2023-08-08 | 悉地（苏州）勘察设计顾问有限公司 | Matrix type parallel arrangement subsurface wetland water flow control system |
| CN116553737B (en) * | 2023-06-05 | 2023-12-01 | 悉地（苏州）勘察设计顾问有限公司 | Matrix type parallel arrangement subsurface wetland water flow control system |
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Application publication date: 20181026 |