CN110540298A - Utilize constructed wetland system of dredging pipe prevention and cure jam - Google Patents
Utilize constructed wetland system of dredging pipe prevention and cure jam Download PDFInfo
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- CN110540298A CN110540298A CN201910926159.9A CN201910926159A CN110540298A CN 110540298 A CN110540298 A CN 110540298A CN 201910926159 A CN201910926159 A CN 201910926159A CN 110540298 A CN110540298 A CN 110540298A
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- 230000002265 prevention Effects 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000010802 sludge Substances 0.000 claims abstract description 73
- 230000000903 blocking effect Effects 0.000 claims description 27
- 238000007599 discharging Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 239000010865 sewage Substances 0.000 description 9
- 239000000945 filler Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- C02F3/02—Aerobic processes
-
- 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
-
- 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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The invention discloses an anti-clogging subsurface flow constructed wetland system, wherein a water inlet pipe is connected with a water distribution area, a wetland treatment area is connected with the water distribution area, a water outlet pipe is connected with a water collection area, a sludge discharge pipe is respectively connected with the wetland treatment area and a sludge discharge channel, one end of the sludge discharge pipe is provided with a valve, a clogging dredging pipe is respectively connected with the wetland treatment area and the sludge discharge channel, the sludge discharge channel is connected with a sludge storage pool, the sludge discharge pipe is connected with the clogging dredging pipe, a water guide layer is respectively connected with the wetland treatment area and an impermeable layer, and aquatic plants are planted on the surface of the wetland treatment area; the water distribution area is filled with cobblestones as a matrix, the wetland treatment area is sequentially provided with a mud discharge channel, an impermeable layer, a water guide layer and a wetland treatment area from bottom to top, and aquatic plants are planted on the surface of the wetland treatment area. The technical problem that the constructed wetland system is easy to block is solved, the service life of the constructed wetland system is prolonged, and the operation cost of the constructed wetland system is reduced. The system is simple to operate, high in engineering practical value and convenient to popularize and apply.
Description
Technical Field
The invention belongs to the technical field of artificial wetland sewage treatment, and particularly relates to an anti-clogging artificial wetland system, which is characterized in that the concept of dredging is firstly put forward in the artificial wetland system, the dredging is called as dredging air guide in short, plugging dredging pipes are arranged, so that the internal blockage of the wetland can be discharged, the function of oxygen ventilation is realized, and meanwhile, the physicochemical property of the water quality of the wetland is monitored during the operation of the wetland.
Background
constructed Wetlands (CWs) are a sewage treatment process that has emerged in the last 70 th century. The process achieves the aim of purifying sewage by simulating an ecological system of a natural wetland and utilizing the combined action of wetland substrates, plants and microorganisms. The artificial wetland can be roughly divided into a surface flow artificial wetland and an undercurrent artificial wetland according to the form of water flow, and the undercurrent artificial wetland can be divided into a horizontal undercurrent artificial wetland, a vertical undercurrent artificial wetland and a composite vertical flow artificial wetland. The method has the advantages of low investment, simple process, low operating cost and the like, and is widely applied at home and abroad.
However, a great deal of engineering practice shows that as the operation time of the constructed wetland increases, the interior of the constructed wetland is blocked to different degrees. The united states environmental protection agency published an investigation report on hundreds of constructed wetlands put into use in 1999, and showed that about half of the wetlands have various clogging problems within 5 years of operation; a plurality of reports about the blockage phenomenon of the artificial wetland exist in China, for example, the artificial wetland of the earliest artificial wetland sewage treatment system in China, namely Shenzhen white mud pit, has various blockage problems. Chinese patent document CN 207468300U discloses a method for discharging sludge and preventing blockage in a horizontal flow constructed wetland, namely, a V-shaped sludge collecting tank is arranged in a wetland treatment area by using the sludge discharging principle of a V-shaped sedimentation tank in a sewage treatment plant, the sludge collecting tank is connected with a sludge discharging pipe, the sludge discharging pipe leads to a sludge discharging channel, and finally, a blockage enters a sludge storage tank through the sludge discharging channel. The method in the patent does not consider the horizontal acting force of the water flow, and the blockage cannot be smoothly deposited in the sludge collecting groove under the action of the water flow, so that the blockage in the wetland cannot be collected in time, and the wetland still can be blocked. Chinese patent CN 106430597a discloses an anti-clogging constructed wetland system, which includes a flushing system and a pollutant collecting system, but needs an additional power drain pump in the whole process, and only can clean the filter block in the area of the water spray opening, and the bottom sludge cannot be discharged, so that the problem of wetland clogging cannot be effectively solved. The invention provides a novel method for relieving the blockage of the constructed wetland, which can more economically and effectively remove the blockage in the wetland.
Disclosure of Invention
the invention aims to provide an anti-clogging subsurface flow constructed wetland system, which can regularly discharge sludge in wetland fillers, increase dissolved oxygen in the wetland, relieve the technical problem that the constructed wetland system is easy to clog, prolong the service life of the constructed wetland system and reduce the operation cost of the constructed wetland system. The system is simple to operate, high in engineering practical value and convenient to popularize and apply.
In order to achieve the purpose, the invention adopts the following technical scheme:
The utility model provides a prevent constructed wetland system of jam, includes inlet tube, water distribution district, wetland treatment area, barrier layer, catchment area, outlet pipe, mud drainage canal, stores mud pond, blocks up and dredges the pipe, and its relation of connection is: the water inlet pipe is connected with the water distribution area, the wetland treatment area is connected with the water distribution area, the water outlet pipe is connected with the water collection area, the sludge discharge pipe is respectively connected with the wetland treatment area and the sludge discharge channel, one end of the sludge discharge pipe is provided with a valve, the blocking dredging pipe is respectively connected with the wetland treatment area and the sludge discharge channel, the sludge discharge channel is connected with the sludge storage tank, the sludge discharge pipe is connected with the blocking dredging pipe, the water guide layer is respectively connected with the wetland treatment area and the impermeable layer, and aquatic plants are planted on the surface of the wetland treatment area; the filling substrate in the water distribution area is cobblestone, and the particle size range is 30-50 mm; and the substrate filled in the wetland treatment area is gravel with the grain diameter ranging from 4 mm to 8 mm. The wetland treatment area is sequentially provided with a mud discharge channel, an impermeable layer, a water guide layer and a wetland treatment area (a core purification matrix layer) from bottom to top, and aquatic plants are planted on the surface of the wetland treatment area. As a preferable technical scheme of the invention, the wetland system is a horizontal subsurface flow constructed wetland and sequentially comprises a water distribution area, a wetland treatment area and a water collection area along the water flow direction.
By utilizing the anti-clogging constructed wetland system, a method for relieving wetland clogging comprises the following steps:
A. Sewage enters a water distribution area 2 from a water inlet pipe 1 and then flows into a wetland treatment area 3, the sewage enters a water collection area 4 after being purified and finally flows out of a wetland system through a water outlet pipe 5;
B. A plurality of blocking dredging pipes 6 are arranged in the wetland treatment area 3, and during the operation of the wetland, the blocking objects among the matrixes enter the pipes through the holes 11 at the upper parts of the blocking dredging pipes under the impact action of water flow and flow into the sludge discharge pipes 7 by utilizing the self gravity;
C. The mud pipe 7 is provided with certain slope, and at the bed rest stage before intaking at every turn, through opening valve 12, the plug flows into mud discharging channel 8 along the slope, and mud discharging channel sets up certain slope, and the plug can flow into the mud storage pond along mud discharging channel.
The blocking dredging pipe can regularly discharge sludge in the wetland filler, increase dissolved oxygen in the wetland, prolong the service life of the wetland filler and reduce the operation cost of the wetland filler. The system is simple to operate, high in engineering practical value and convenient to popularize and apply.
As the preferred technical scheme of the invention, the filling substrate in the water distribution area is cobblestone, and the particle size range is 30-50 mm; and the substrate filled in the wetland treatment area is gravel with the grain diameter ranging from 4 mm to 8 mm.
As the preferable technical scheme of the invention, the end of the sludge discharge pipe close to the sludge discharge channel is provided with a control valve.
As a preferable technical scheme of the invention, the two wetland treatment area units can share one sludge discharge channel, and can also separately use two sludge discharge channels.
As a preferred technical scheme of the invention, the wetland treatment area is sequentially provided with a mud discharge channel, an impermeable layer, a water guide layer and a core purification matrix layer from bottom to top, and aquatic plants are planted on the surface of the core purification matrix layer.
As the preferable technical scheme of the invention, the construction of the anti-seepage layer and the water guide layer is designed according to the design specification of the artificial wetland.
As the preferred technical scheme of the invention, the pipe diameters of the blocking dredging pipe and the sludge discharge pipe in the wetland treatment area are DN 200-300 mm.
As the preferable technical scheme of the invention, the blocking dredging pipe and the sludge discharge pipe in the wetland treatment area can be connected through a bend and a tee.
As the preferred technical scheme of the invention, the blocking dredging pipe is provided with a reserved section with a certain height according to the height of the wetland filler, the reserved section is connected with the sludge discharge pipe and is used for storing the blocking objects, small holes are uniformly distributed on the rest length of the dredging pipe, the hole diameter is slightly larger than the particle diameter of the matrix, the hole diameter of the upstream surface is smaller than that of the downstream surface, and the upstream surface and the downstream surface are staggered with each other, so that the secondary water distribution function is realized; in addition, in order to prevent the broken stones scattered by the water flow from entering the pipe, a layer of 100-mesh nylon gauze or a pipe sleeve made of the same material is laid on the outer part of the pipe.
As the preferred technical scheme of the invention, the sludge discharge pipe is arranged along the direction vertical to the water flow, and the gradient is 2-10%.
As the preferred technical scheme of the invention, the sludge discharge channel is parallel to the water flow direction, and the gradient is set to be 2-10%.
as a preferable technical scheme of the invention, the number of the blocked dredging pipes and the sludge discharge pipes is determined according to the scale and the treatment capacity of the wetland.
The invention introduces the concept of dredging for the first time, and constructs a novel anti-blocking constructed wetland system by adding the blocking dredging pipe. Compared with the prior art, the invention has the beneficial effects that:
(1) the system improves the traditional artificial wetland, adds the blocking dredging pipe system, has the function of secondary water distribution, can also discharge the blocking matters in the wetland regularly, and prolongs the service life of the wetland;
(2) The wetland blocked dredging pipe can be used as a preferred point position for monitoring various physical and chemical parameters in the wetland, and a probe of the water quality tester can be directly inserted into the pipe, so that the physical and chemical properties in the wetland can be monitored on line, and maintenance measures can be taken conveniently;
(3) The blocked dredging pipe can play a role of oxygen ventilation when the wetland is emptied, increases dissolved oxygen at the bottom of the wetland, and is beneficial to the growth of aerobic microorganisms at the bottom layer, thereby improving the removal efficiency of COD of the wetland. Two small-test horizontal subsurface flow constructed wetlands are constructed according to the structure of the invention, between No. 5 and No. 6 months 20 in 2019, dissolved oxygen at the bottom of the wetland is measured by inserting a probe of a YSL water quality on-line instrument into a blocking dredging pipe, the dissolved oxygen at the bottom of the wetland is only 0.16-0.20mg/L during the operation period and is in a severe anoxic state, and after the wetland is emptied, air rapidly enters the bottom of the wetland through the blocking dredging pipe, so that the dissolved oxygen is recovered to the atmospheric level. Therefore, the method is beneficial to the nitrification and denitrification reaction in the wetland, and the denitrification rate of the wetland is improved to a certain extent.
(4) the operation of the horizontal subsurface flow constructed wetland system for relieving blockage is simpler, the engineering practical value is high, and the popularization and the application are convenient.
drawings
FIG. 1 is a plan view of an anti-clogging subsurface flow constructed wetland system;
FIG. 2 is a front sectional view of an anti-clogging undercurrent constructed wetland system;
FIG. 3 is a left sectional view of an anti-clogging undercurrent constructed wetland system;
Fig. 4 is a schematic view of a clogging canalizing structure;
FIG. 5 is a schematic view of a mud pipe structure;
in the figure: 1-water inlet pipe, 2-water distribution area, 3-wetland treatment area, 4-water collection area, 5-water outlet pipe, 6-blocking dredging pipe, 7-sludge discharge pipe, 8-sludge discharge channel, 9-sludge storage tank, 10-wetland plant, 11-hole, 12-valve, 13-impermeable layer and 14-water guide layer.
Detailed Description
Example 1:
The present invention will be described in further detail with reference to examples.
as can be seen from fig. 1, 2, 3 and 4, the anti-clogging subsurface flow constructed wetland system comprises: the water inlet pipe 1, the water distribution district 2, the wetland treatment zone 3, the barrier layer 13, the catchment district 4, the outlet pipe 5, its connection relation is: the water inlet pipe 1 is connected with the water distribution area 2, the wetland treatment area 3 is connected with the water distribution area 2, the water outlet pipe 5 is connected with the water collection area 4, the sludge discharge pipe 7 is respectively connected with the wetland treatment area 3 and the sludge discharge channel 8, one end of the sludge discharge pipe 7 is provided with a valve 12, the blocking and dredging pipe 6 is respectively connected with the wetland treatment area 3 and the sludge discharge channel 8, the sludge discharge channel 8 is connected with the sludge storage tank 9, the sludge discharge pipe 7 is connected with the blocking and dredging pipe 6, the water guide layer 14 is respectively connected with the wetland treatment area 3 and the impermeable layer 13, and aquatic plants 10 are planted on the surface of the wetland treatment area 3; the filling substrate in the water distribution area 2 is cobblestones, and the particle size range is 30 or 35 or 41 or 46 or 50 mm; and the substrate filled in the wetland treatment area 3 is gravel with the grain diameter range of 4 mm, 6 mm or 8 mm. The wetland treatment area is sequentially provided with a mud discharge channel 8, an impermeable layer 13, a water guide layer 14 and a wetland treatment area 3 (a core purification matrix layer) from bottom to top, and aquatic plants 10 are planted on the surface of the wetland treatment area 3.
sewage in the wetland treatment area 3 enters the water distribution area 2 from the water inlet pipe 1 and then flows into the wetland treatment area 3, and the sewage enters the water collection area 4 after being purified and finally flows out of the wetland system through the water outlet pipe 5. Referring to fig. 2, which is a cross-sectional view of one wetland unit in fig. 1 in the direction vertical to the water flow, referring to fig. 3, which is a cross-sectional view of one wetland unit in fig. 1 in the direction along the water flow, a plurality of blocking dredging pipes 6 are arranged in the wetland treatment area 3, and the specific number is preferably 4-8 per square meter; during the operation of the wetland, the plug between the matrixes enters the pipe through the hole 11 at the upper part of the blocking dredging pipe 6 under the impact action of water flow and flows downwards into the sludge discharge pipe 7, and the sludge discharge pipe 7 is provided with a certain gradient which ranges from 2 percent to 10 percent; in the bed rest stage before water is fed in each time, the blockage flows into the sludge discharge channel 8 along the gradient by opening the valve 12, the gradient of the sludge discharge channel is set to be 2% -10%, and the blockage flows into the sludge storage tank 9 along the sludge discharge channel.
In the operation process of the horizontal plug-flow constructed wetland, a sludge discharge pipe valve 12 in a sludge discharge channel 8 is periodically opened, sludge in the constructed wetland treatment area 3 is discharged to the sludge discharge channel 8 by using hydrostatic pressure, and finally the sludge is discharged into a sludge storage tank 9; the sludge can be used as subsequent resource.
Referring to fig. 1, in the present embodiment, the specific number of the canals 6 in the horizontal subsurface flow constructed wetland is preferably 4-8 per square meter, but in practical application, the canals can be flexibly designed according to the treatment scale and the terrain, so that the construction cost is minimized.
Referring to fig. 1 and 2, the construction of the impermeable layer 13 and the water guiding layer 14 is designed according to the artificial wetland design specifications.
Referring to fig. 4 and 5, the pipe diameters of the blocking dredging pipe 6 and the sludge discharge pipe 7 in the wetland treatment area 3 are DN 200-300 mm.
Referring to fig. 1 and 2, the clogging and dredging pipe 6 and the sludge discharge pipe 7 in the wetland treatment area 3 can be connected by a bend and a tee.
as an implementation mode of the invention, the blocking dredging pipe 6 is provided with a reserved section with a certain height according to the height of the wetland filler, the reserved section is connected with the sludge discharge pipe 7 and is used for storing the blocking objects, small holes are uniformly distributed on the rest length of the dredging pipe, the hole diameter is slightly larger than the particle diameter of the matrix, the hole diameter of the upstream side is smaller than that of the downstream side, and the upstream side and the downstream side are staggered with each other, so that the secondary water distribution function is realized; in addition, in order to prevent the broken stones scattered by the water flow from entering the pipe, a layer of 100-mesh nylon gauze or a pipe sleeve made of the same material is laid on the outer part of the pipe.
As an embodiment of the invention, the sludge discharge pipe 7 is arranged along the direction vertical to the water flow, and the gradient is 2-10%.
as an embodiment of the present invention, the mud discharge channel 8 is parallel to the water flow direction, and the slope is set to 2% to 10%.
through the specific technical measures, the following technical problems and difficulties are solved and the following effects are achieved:
(1) In actual engineering, the artificial wetland has the problem of blockage in different degrees after running for a period of time. The constructed wetland system not only can regularly discharge the internal blockage of the wetland, but also has the function of secondary water distribution, so that the water distribution is more uniform, the problem of wetland blockage is fundamentally relieved, and the service life of the constructed wetland is prolonged;
(2) The artificial wetland in the actual engineering has large area, and some physical and chemical parameters in the wetland are not easy to monitor. The wetland blocking dredging pipe can be used as a preferred point position for monitoring various physical and chemical parameters in the wetland, and a probe of a water quality tester can be directly inserted into the pipe, so that the physical and chemical properties in the wetland can be monitored on line, and maintenance measures can be taken in time;
(3) The bottom of the artificial wetland in the actual engineering is seriously anoxic. The blocking dredging pipe can play a role of oxygen introduction when the wetland is emptied, increases dissolved oxygen at the bottom of the wetland, and is beneficial to the growth of aerobic microorganisms at the bottom layer, thereby improving the removal efficiency of COD of the wetland; meanwhile, the method is beneficial to the implementation of nitration and denitrification reactions, and improves the wetland denitrification rate to a certain extent.
(4) The operation of the horizontal subsurface flow constructed wetland system for relieving blockage is simpler, the engineering practical value is high, and the popularization and the application are convenient.
Claims (7)
1. the utility model provides a prevent undercurrent constructed wetland system of jam, this constructed wetland system includes inlet tube (1), water distribution district (2), wetland treatment area (3), catchment area (4), outlet pipe (5), barrier layer (13), its characterized in that: the water inlet pipe (1) is connected with the water distribution area (2), the wetland treatment area (3) is connected with the water distribution area (2), the water outlet pipe (5) is connected with the water collection area (4), the sludge discharge pipe (7) is respectively connected with the wetland treatment area (3) and the sludge discharge channel (8), a valve (12) is arranged at one end of the sludge discharge pipe (7), the blocking dredging pipe (6) is respectively connected with the wetland treatment area (3) and the sludge discharge channel (8), the sludge discharge channel (8) is connected with the sludge storage pool (9), the sludge discharge pipe (7) is connected with the blocking dredging pipe (6), the water guide layer (14) is respectively connected with the wetland treatment area (3) and the impermeable layer (13), and aquatic plants (10) on the surface of the wetland treatment area (3).
2. The anti-clogging subsurface flow constructed wetland system of claim 1, wherein: the filling substrate in the water distribution area (2) is cobblestone, and the particle size range is 30-50 mm; the substrate filled in the wetland treatment area (3) is gravel with the grain diameter ranging from 4 mm to 8 mm.
3. The anti-clogging subsurface flow constructed wetland system of claim 1, wherein: the wetland treatment area is sequentially provided with a mud discharge channel (8), an impermeable layer (13), a water guide layer (14) and the wetland treatment area 3 from bottom to top.
4. the anti-clogging subsurface flow constructed wetland system of claim 1, wherein: the pipe diameters of the blocking dredging pipe and the mud discharging pipe in the wetland treatment area (3) are DN 200-300 mm.
5. The anti-clogging subsurface flow constructed wetland system of claim 1, wherein: the sludge discharge pipe (7) is arranged along the direction vertical to the water flow, and the gradient is 2-10%.
6. The anti-clogging subsurface flow constructed wetland system of claim 1, wherein: the mud discharge channel (8) is parallel to the water flow direction, and the gradient is set to be 2% -10%.
7. The anti-clogging subsurface flow constructed wetland system of claim 1, wherein: 4-8 dredging pipes (6) are arranged per square meter.
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| CN201910926159.9A CN110540298B (en) | 2019-09-27 | 2019-09-27 | Constructed wetland system for preventing and treating blockage by using dredging pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698030A (en) * | 2021-08-03 | 2021-11-26 | 贵州格淋生态环境工程有限公司 | MRS water purification system |
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| CN107662979A (en) * | 2017-10-30 | 2018-02-06 | 郑州大学 | A kind of practical spoil disposal and anticlogging horizontal plug-flow artificial wet land system |
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| CN113698030A (en) * | 2021-08-03 | 2021-11-26 | 贵州格淋生态环境工程有限公司 | MRS water purification system |
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| CN110540298B (en) | 2024-08-09 |
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