CN211367142U - 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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- CN211367142U CN211367142U CN201921629402.2U CN201921629402U CN211367142U CN 211367142 U CN211367142 U CN 211367142U CN 201921629402 U CN201921629402 U CN 201921629402U CN 211367142 U CN211367142 U CN 211367142U
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses an artificial wetland system for preventing and treating blockage by using dredging pipes, 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, the blockage 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 pond, the sludge discharge pipe is connected with the blockage 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 utility model belongs to the technical field of constructed wetland sewage treatment, especially, relate to a prevent constructed wetland system of jam, this system dredges the pipe through placing the jam particularly, can discharge the inside plug of wetland and have the effect of logical oxygen, and simultaneously during the wetland operation, the physical and chemical properties of monitoring wetland quality of water.
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 a power draining pump is additionally provided in the whole process, and only the filtering block in the area of the water spraying port can be cleaned, so that the bottom sludge cannot be discharged, and the problem of wetland clogging cannot be effectively solved. The utility model provides a new method for relieving the blockage of the constructed wetland, which can more economically and effectively remove the blockage in the wetland.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent undercurrent constructed wetland system of jam, the inside mud of discharge wetland filler that can be regular increases the inside dissolved oxygen of wetland, has alleviated the technical problem that constructed wetland system easily blockked up, has prolonged its life, has reduced its operating cost. The system is simple to operate, high in engineering practical value and convenient to popularize and apply.
In order to achieve the above purpose, the utility model 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 the utility model discloses preferred technical scheme, the wetland system be horizontal undercurrent constructed wetland, be water distribution district, wetland treatment area, catchment area along the rivers direction in proper order.
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 preferable technical proposal of the utility model, 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 utility model discloses preferred technical scheme, that one end that the mud pipe is close to the mud discharging canal is equipped with control flap.
As the preferred technical scheme of the utility model, two the wetland treatment area unit can share a row's mud canal, also can separately use two row's mud canals.
As the utility model discloses preferred technical scheme, the wetland treatment zone is from up in proper order down arranges mud canal, barrier layer, water guide layer, core and purifies the matrix layer, aquatic plant is planted on matrix layer surface to the core purification.
As the preferred technical proposal of the utility model, the construction of the impermeable layer and the water guide layer is designed according to the design specification of the artificial wetland.
As the utility model discloses preferred technical scheme, the pipe is dredged in the jam in the wetland treatment zone and mud pipe diameter is DN200 ~ 300 mm.
As the preferred technical scheme of the utility model, the blocking dredging pipe in the wetland treatment area is connected with the tee joint through the bend.
As the optimized technical proposal of the utility model, 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, and the hole diameter of the upstream side is smaller than that of the downstream side and is staggered with each other, so that the blocking dredging pipe has the function of secondary water distribution; 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 utility model discloses preferred technical scheme, the mud pipe is arranged along the direction perpendicular with rivers, and the slope is 2% ~ 10%.
As the utility model discloses preferred technical scheme, row's mud canal is parallel with the rivers direction, and the slope sets up to 2% ~ 10%.
As the optimized technical proposal of the utility model, the number of the blocked dredging pipes and the mud discharging pipes is determined according to the scale and the treatment capacity of the wetland.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model improves the traditional constructed wetland, adds a blocking and dredging pipe system, has the function of secondary water distribution, can also discharge the blocking objects 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 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 utility model discloses this system operation of horizontal undercurrent constructed wetland system is simple, and engineering practical value is high, and the facilitate promotion is used.
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, the valve 12 of the sludge discharge pipe in the sludge discharge channel 8 is periodically opened, the 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 the sludge storage pool 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 utility model, 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 two sides are staggered with each other, so that the secondary water distribution effect is achieved; 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 present invention, the mud discharging pipe 7 is arranged along the direction perpendicular to the water flow, and the slope is 2% -10%.
As an embodiment of the present invention, the mud discharging channel 8 is parallel to the water flow direction, and the slope is set to 2% -10%.
Claims (7)
1. The utility model provides an utilize constructed wetland system of dredging pipe prevention and cure jam, this constructed wetland system includes inlet tube (1), water distribution district (2), wetland treatment area (3), water-collecting zone (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 constructed wetland system for preventing and treating blockage by using the dredging pipe as claimed in claim 1, which is characterized in that: 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 constructed wetland system for preventing and treating blockage by using the dredging pipe as claimed in claim 1, which is characterized in that: 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) from bottom to top.
4. The constructed wetland system for preventing and treating blockage by using the dredging pipe as claimed in claim 1, which is characterized in that: 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 constructed wetland system for preventing and treating blockage by using the dredging pipe as claimed in claim 1, which is characterized in that: the sludge discharge pipe (7) is arranged along the direction vertical to the water flow, and the gradient is 2% -10%.
6. The constructed wetland system for preventing and treating blockage by using the dredging pipe as claimed in claim 1, which is characterized in that: the mud discharge channel (8) is parallel to the water flow direction, and the gradient is set to be 2% -10%.
7. The constructed wetland system for preventing and treating blockage by using the dredging pipe as claimed in claim 1, which is characterized in that: 4-8 dredging pipes (6) are arranged per square meter.
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| CN201921629402.2U CN211367142U (en) | 2019-09-27 | 2019-09-27 | Utilize constructed wetland system of dredging pipe prevention and cure jam |
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| CN201921629402.2U CN211367142U (en) | 2019-09-27 | 2019-09-27 | Utilize constructed wetland system of dredging pipe prevention and cure jam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112679053A (en) * | 2021-02-01 | 2021-04-20 | 江苏聚慧科技有限公司 | Ecological barrier of shallow lake water source ground |
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2019
- 2019-09-27 CN CN201921629402.2U patent/CN211367142U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112679053A (en) * | 2021-02-01 | 2021-04-20 | 江苏聚慧科技有限公司 | Ecological barrier of shallow lake water source ground |
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