CN217323563U - Radial flow type composite wetland purification system - Google Patents
Radial flow type composite wetland purification system Download PDFInfo
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- CN217323563U CN217323563U CN202220289488.4U CN202220289488U CN217323563U CN 217323563 U CN217323563 U CN 217323563U CN 202220289488 U CN202220289488 U CN 202220289488U CN 217323563 U CN217323563 U CN 217323563U
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- 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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Abstract
The utility model discloses a compound wetland clean system of radial-flow type, including water distribution pond, undercurrent wetland and catchment water purification canal, the water distribution pond is located central point and puts, and the undercurrent wetland encloses and locates the water distribution pond periphery, and catchment water purification canal encloses and establishes undercurrent wetland periphery, is equipped with a plurality of its partition walls along circumferencial direction evenly distributed in the undercurrent wetland, and each partition wall is along the radial extension of undercurrent wetland, and a plurality of parallelly connected wetland processing units are separated into to the undercurrent wetland. The system adopts a radial flow type purification mode, saves the total occupied area, increases the space utilization rate, prolongs the hydraulic retention time and further improves the sewage treatment capacity of unit area.
Description
Technical Field
The utility model relates to a sewage ecological management technical field, concretely relates to compound wetland clean system of radial flow formula.
Background
The artificial wetland is a sewage treatment technology which is widely applied, and the purification mechanism of the artificial wetland mainly comprises matrix adsorption, plant absorption, microbial degradation and the like. Compared with the traditional sewage treatment process, the wetland treatment system has the advantages of wide treatment scale, low construction cost, low operation and maintenance cost, small influence on the surrounding environment, good landscape effect and the like, is more easily accepted by people, and is commonly used in a plurality of research fields of rural domestic sewage dispersion treatment, non-point source pollution reduction, tail water deep purification of sewage treatment plants, water quality improvement of polluted river channel bypasses, lake eutrophication treatment and the like.
The artificial wetland can be divided into a surface artificial wetland and an undercurrent artificial wetland according to the flowing mode of water, and the latter artificial wetland is more widely used because of stronger purification capacity. At present, the appearance of an undercurrent wetland system is mostly rectangular, the landscape effect is relatively single, the water distribution pipeline is longer, the water distribution and collection area of the wetland system is often larger, the main body area of the wetland bearing the purification function is reduced, and the total occupied area is increased. Meanwhile, systematic operation and maintenance of the wetland units are difficult, the series wetland is not beneficial to subsequent maintenance, and the parallel wetland maintenance can influence the effluent quality safety, finally the substrate is blocked, and the service life of the wetland is shortened. In addition, the existing wetland has short sewage treatment length and short hydraulic retention time, so that the pollutant removal rate is low.
Therefore, the existing wetland has the defects of single landscape effect, low land utilization rate, low unit area treatment capacity, difficult operation and maintenance, short service life and the like, and further development of the wetland in sewage ecological management is restricted to a certain extent.
Disclosure of Invention
In order to solve the problems existing in the prior art, the utility model provides a radial-flow type composite wetland purification system, which adopts a radial-flow type purification mode, saves the total occupied area, increases the space utilization rate, prolongs the hydraulic retention time and further improves the sewage treatment capacity of unit area.
Realize the utility model discloses the technical scheme that above-mentioned purpose adopted does:
a radial flow type composite wetland purification system comprises a water distribution pool, an undercurrent wetland and a water collection and purification channel, wherein the water distribution pool is positioned at the central position, the undercurrent wetland is arranged around the water distribution pool, the water collection and purification channel is arranged around the undercurrent wetland, a plurality of partition walls which are uniformly distributed along the circumferential direction are arranged in the undercurrent wetland, each partition wall extends along the radial direction of the undercurrent wetland, and the undercurrent wetland is divided into a plurality of wetland treatment units which are connected in parallel.
The subsurface flow wetland is sequentially filled with a small-particle-size base layer, a medium-particle-size matrix layer and a large-particle-size matrix layer from inside to outside, and the thickness of the medium-particle-size matrix layer is the largest.
Wetland plants are planted on the subsurface flow wetland and distributed in a circular matrix.
The upper part of the side wall of the water distribution tank is provided with a plurality of water distribution pipes which are uniformly distributed along the circumferential direction, each water distribution pipe penetrates through the side wall of the water distribution tank, one end of each water distribution pipe is communicated with the water distribution tank, the other end of each water distribution pipe is communicated with the corresponding wetland treatment unit, and each water distribution pipe is provided with a first water valve.
The water collecting and purifying channel is of a reinforced concrete integrally formed structure, the inner side wall of the water collecting and purifying channel is an undercurrent wetland outer side wall, the side wall of the water distribution tank is an undercurrent wetland inner side wall, each wetland treatment unit is provided with a water collecting pipeline communicated with the water collecting and purifying channel, each water collecting pipeline comprises a water collecting branch pipe and a water collecting main pipe, two ends of each water collecting branch pipe are sealed, the water collecting branch pipes are provided with water collecting holes which are uniformly and densely distributed along the length direction of the water collecting branch pipes, one end of each water collecting main pipe is connected with the middle part of each water collecting branch pipe, each water collecting branch pipe is arranged at the bottom of one side of the corresponding wetland treatment unit close to the water collecting and purifying channel, all the water collecting branch pipes are distributed on the side length of a polygon internally tangent to the same circumference, and each water collecting main pipe is communicated with the water collecting and purifying channel.
The main water collecting pipes are umbrella-handle type, the port of the longer side of each main water collecting pipe is communicated with the corresponding branch water collecting pipe, the longer side of each main water collecting pipe is perpendicular to the corresponding branch water collecting pipe, the port of the shorter side of each main water collecting pipe is positioned at the upper part of the water collecting and purifying channel, and a second water valve is arranged on each main water collecting pipe.
The water distribution tank is provided with a water inlet pipe, the water inlet pipe sequentially penetrates through the outer side wall of the water collecting and purifying channel, the inner side wall of the water collecting and purifying channel and the side wall of the water distribution tank, the water inlet pipe is arranged on one partition wall, and the longitudinal section of the water inlet side of the water inlet pipe is L-shaped.
The bottom of the subsurface flow wetland and the water distribution tank is a foundation of an integrated structure, the foundation comprises an anti-seepage film layer paved on the ground, a plain soil compaction layer is arranged on the anti-seepage film layer, the gradient of the foundation is 0.5-1.5%, the height of the center of the foundation is greater than that of the edge of the foundation, and grid cover plates are respectively covered on the water collecting and purifying channel and the top of the water distribution tank.
The water collecting and purifying channel is internally and symmetrically provided with a pair of overflow weirs, the water collecting and purifying channel is divided into a purifying channel and a converging channel by the overflow weirs, the purifying channel is longer than the converging channel, the purifying channel is respectively communicated with the wetland treatment units, two ends of the purifying channel are positioned on the peripheries of the two adjacent wetland units, the outer side wall of the converging channel is provided with a drain pipe, and the drain pipe is provided with a third water valve.
The bottom of the purification channel is paved with a fine sand layer, and submerged plants are planted at the bottom of the purification channel.
Compared with the prior art, the beneficial effects and advantages of the utility model reside in that:
1. this system has set up water distribution pond, undercurrent wetland and catchment water purification canal, and water distribution pond, undercurrent wetland and catchment water purification canal lay with one heart for whole system is circularly, and than traditional rectangle clean system, not only greatly increased the view effect, area is littleer moreover, can effectively practice thrift the land used.
2. The system adopts radial-flow water distribution, greatly saves the area of a water distribution pool and saves the length of a water distribution pipe.
3. The subsurface flow wetland of the system adopts a plurality of parallel treatment units, so that sewage can be treated more dispersedly, and meanwhile, the system is favorable for the maintenance and management of each treatment unit in the later period, does not influence the effluent quality, is not easy to cause substrate blockage, and is favorable for delaying the service life of the wetland.
4. Compared with the single purpose of the traditional wetland water collecting tank, the system has the advantages that the water collecting and purifying tank is arranged behind the subsurface flow wetland, the design of the water collecting and purifying tank prolongs the sewage treatment length, and the purification capacity of the whole wetland system is favorably improved. In addition, the water collecting and purifying tank mainly repairs submerged plants, so that a sewage purification mechanism tends to be more perfect, and the ornamental effect of the wetland is improved.
Drawings
Fig. 1 is a structural schematic diagram of a radial flow type composite wetland purification system.
Fig. 2 is a sectional view taken along line B-B in fig. 1.
Fig. 3 is a sectional view taken along line a-a in fig. 1.
The water-collecting and water-purifying device comprises a water distribution tank 1, a subsurface flow wetland 2, a water collecting and water purifying channel 3, a partition wall 4, a wetland treatment unit 5, a small-particle-size base layer 6, a medium-particle-size matrix layer 7, a large-particle-size matrix layer 8, a water distribution pipe 9, a first water valve 10, a water collecting branch pipe 11, a water collecting main pipe 12, a second water valve 13, a water inlet pipe 14, an anti-seepage film layer 15, a soil ramming layer 16, an overflow weir 17, a purifying channel 18, a converging channel 19, a draining pipe 20, a third water valve 21, a fine sand layer 22, a grid cover plate 23, submerged plants 24, a regenerated flower 25, canna 26 and loosestrife.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The structure of the radial flow type composite wetland purification system provided by the embodiment is shown in fig. 1-3, and comprises a water distribution tank 1, an underflow wetland 2 and a water collecting and purifying channel 3, wherein the water distribution tank 1 is circular, and the underflow wetland 2 and the water collecting and purifying channel 3 are all annular. The water distribution tank 1 is located at the center, the subsurface flow wetland 2 is arranged around the periphery of the water distribution tank 1, and the catchment water purification channel 3 is arranged around the periphery of the subsurface flow wetland, so that the whole system is circular.
The bottom of the subsurface flow wetland 2 and the bottom of the water distribution tank 1 are of an integrally formed structure, the foundation is disc-shaped, the foundation comprises an impermeable film layer 15 laid on the ground, and a plain soil tamping layer 16 is arranged on the impermeable film layer 15. The slope of the foundation is 1%, and the heights of the centers of the foundations in the direction of the edges of the foundation are sequentially reduced. The water collecting and purifying channel 3 is of a reinforced concrete integrally formed structure, a circle of concrete wall is constructed on the center of a foundation to form a water distribution tank 1, the bottom of the water collecting and purifying channel 3 is connected with the edge of the foundation, the bottom of the water collecting and purifying channel 3 is flush with the edge of the foundation, the inner side wall of the water collecting and purifying channel 3 is connected with the edge of the foundation, and the inner side wall of the water collecting and purifying channel 3, the foundation and the side wall of the water distribution tank 1 form a frame main body of the subsurface wetland 2. The height of the inner side wall of the water collecting and purifying channel 3, the outer side wall of the water collecting and purifying channel 3 and the side wall of the water distributing pool 1 are all 1.6 m.
The subsurface wetland 2 is sequentially filled with a small-particle-size base layer 6, a medium-particle-size matrix layer 7 and a large-particle-size matrix layer 8 from inside to outside, the small-particle-size base layer 6, the medium-particle-size matrix layer 7 and the large-particle-size matrix layer 8 are all annular, the small-particle-size matrix layer 6 is filled with gravels of 5-15 mm in length of 2m, and the medium-particle-size matrix layer 7 is filled with volcanic rocks of 10-25 mm in length of 6 m; the large-particle-size substrate layer 8 is filled with 20-50 mm gravels, the length is 2m, and the heights of the small-particle-size substrate layer 6, the medium-particle-size substrate layer 7 and the large-particle-size substrate layer 8 are all 1.2 m.
Wetland plants are planted on the subsurface flow wetland 2 in a circular and rectangular array distribution, and the planting density is 15 plants/m 2 The specific layout is as follows: with the center of the water distribution pool 1 as the center of a circle, the redroot flower 25 is planted within the radius of 1-4 m, the canna 26 is planted within the radius of 4-7 m, and the loosestrife 27 is planted within the radius of 7-11 m.
12 partition walls 4 which are uniformly distributed along the circumferential direction are arranged in the subsurface flow wetland, each partition wall 4 extends along the radial direction of the subsurface flow wetland, the height of each partition wall 4 is 1.3m, the subsurface flow wetland is divided into 12 wetland treatment units 5 which are connected in parallel, and each wetland treatment unit 5 is in a fan-shaped ring shape.
A pair of overflow weirs 17 is symmetrically arranged in the water collecting and purifying channel 3, the water collecting and purifying channel 3 is divided into a purifying channel 18 and a converging channel 19 by the overflow weirs 17, the length of the purifying channel 18 is far longer than that of the converging channel 19, the effective water depth of the purifying channel 18 is 1.0m, and the effective water depth of the converging channel 19 is 0.9 m. A fine sand layer is laid at the bottom of the purification ditch 18, and low-light submerged plants 24 such as tape grass are planted on the fine sand layer with the planting density of 40 plants/m 2 . The outer side wall of the confluence channel 19 is provided with a drain pipe 20, the drain pipe 20 is a PVC pipe, and the half part of the water inlet pipe 20The diameter is 200 mm. The drain pipe is provided with a third water valve 21.
The water distribution tank 1 is provided with a water inlet pipe 14, the water inlet pipe 14 is a PVC pipe, and the radius of the water inlet pipe 14 is 200 mm. The inlet tube 14 runs through 3 lateral walls of water purification canal, 3 inside walls of water purification canal and 1 lateral wall of water distribution tank of catchmenting in proper order, and on one of them partition wall 4 was arranged in to the inlet tube 14, the side longitudinal section of intaking of inlet tube 14 was the L type for sewage flows into in the water distribution tank perpendicularly.
The upper part of the side wall of the water distribution tank 1 is provided with a plurality of water distribution pipes 9 which are uniformly distributed along the circumferential direction, the water distribution pipes 9 are PVC pipes, and the diameter of each water distribution pipe 9 is 100 mm. Each water distribution pipe 9 penetrates through the top of the side wall of the water distribution tank 1, one end of each water distribution pipe 9 is positioned in the water distribution tank 1, the other end of each water distribution pipe 9 is positioned above the small-grain-size matrix layer of the corresponding wetland treatment unit 5, and each water distribution pipe 9 is provided with a first water valve 10.
And each wetland treatment unit 5 is provided with a water collecting pipeline, the water collecting pipeline comprises a water collecting branch pipe 11 and a water collecting main pipe 12, the water collecting branch pipe 11 and the water collecting main pipe 12 are PVC pipes, the radius of the water collecting branch pipe 11 is 100mm, and the radius of the water collecting main pipe 12 is 150 mm. The main water collecting pipe 12 is umbrella-handle type, two ends of the branch water collecting pipe 11 are sealed, the branch water collecting pipe 11 is provided with water collecting holes which are evenly and densely distributed along the length direction, and the aperture of the water collecting holes is 10 mm. Each water collecting branch pipe 11 is arranged at the bottom of one side of the corresponding wetland treatment unit 5 close to the water collecting and purifying channel 3, and 12 water collecting branch pipes 11 are arranged on the side length of a polygon internally tangent to the same circumference. The port of the longer side of each water collecting main pipe 12 is connected with the middle part of the corresponding water collecting branch pipe 11, the port of the shorter side of each water collecting main pipe 12 is positioned at the upper part of the purifying channel 18, and each water collecting main pipe 12 is provided with a second water valve 13.
The top parts of the water collecting and purifying channel 3 and the water distributing pool 1 are respectively covered with a grid cover plate 23, and the mesh spacing of the grid cover plate 23 is 10mm
The sewage flows into the water distribution tank 1 through the water inlet pipe 14, supernatant liquid precipitated in the water distribution tank 1 flows into the 12 wetland treatment units 5, the water treated by the 12 wetland treatment units 5 is collected through the water collecting branch pipes 11 and then flows into the purifying channel 18 through the water collecting main pipe 12, the water in the purifying channel 18 is purified and then flows into the converging channel 19 through the overflow weir 17, and the water in the converging channel 19 is discharged through the water discharge pipe 20.
Claims (10)
1. A radial flow type composite wetland purification system comprises a water distribution tank and an undercurrent wetland, and is characterized in that: the wetland sewage treatment system is characterized by further comprising a water collecting and purifying channel, the water distribution tank is located in the center, the subsurface flow wetland is arranged around the periphery of the water distribution tank, the water collecting and purifying channel is arranged around the periphery of the subsurface flow wetland, a plurality of partition walls which are uniformly distributed along the circumferential direction are arranged in the subsurface flow wetland, each partition wall extends along the radial direction of the subsurface flow wetland, and the subsurface flow wetland is divided into a plurality of wetland treatment units which are connected in parallel.
2. The radial flow type composite wetland purification system of claim 1, wherein: the subsurface flow wetland is sequentially filled with a small-particle-size base layer, a medium-particle-size matrix layer and a large-particle-size matrix layer from inside to outside, and the thickness of the medium-particle-size matrix layer is the largest.
3. The radial flow type composite wetland purification system of claim 2, wherein: wetland plants are planted on the subsurface flow wetland and distributed in a circular matrix.
4. The radial flow type composite wetland purification system of claim 1, wherein: the upper part of the side wall of the water distribution tank is provided with a plurality of water distribution pipes which are uniformly distributed along the circumferential direction, each water distribution pipe penetrates through the side wall of the water distribution tank, one end of each water distribution pipe is communicated with the water distribution tank, the other end of each water distribution pipe is communicated with the corresponding wetland treatment unit, and each water distribution pipe is provided with a first water valve.
5. The radial flow type composite wetland purification system of claim 4, wherein: the water collecting and purifying channel is of a reinforced concrete integrally formed structure, the inner side wall of the water collecting and purifying channel is an undercurrent wetland outer side wall, the side wall of the water distribution tank is an undercurrent wetland inner side wall, each wetland treatment unit is provided with a water collecting pipeline communicated with the water collecting and purifying channel, each water collecting pipeline comprises a water collecting branch pipe and a water collecting main pipe, two ends of each water collecting branch pipe are sealed, the water collecting branch pipes are provided with water collecting holes which are uniformly and densely distributed along the length direction of the water collecting branch pipes, one end of each water collecting main pipe is connected with the middle part of each water collecting branch pipe, each water collecting branch pipe is arranged at the bottom of one side of the corresponding wetland treatment unit close to the water collecting and purifying channel, all the water collecting branch pipes are distributed on the side length of a polygon internally tangent to the same circumference, and each water collecting main pipe is communicated with the water collecting and purifying channel.
6. The radial flow type composite wetland purification system according to claim 5, wherein: the water collecting main pipes are of umbrella handle shapes, the port of the longer side of each water collecting main pipe is communicated with the corresponding water collecting branch pipe, the longer side of each water collecting main pipe is perpendicular to the corresponding water collecting branch pipe, the port of the shorter side of each water collecting main pipe is positioned at the upper part of the water collecting and purifying channel, and each water collecting main pipe is provided with a second water valve.
7. The radial flow type composite wetland purification system of claim 5, wherein: the water distribution tank is provided with a water inlet pipe, the water inlet pipe sequentially penetrates through the outer side wall of the water collecting and purifying channel, the inner side wall of the water collecting and purifying channel and the side wall of the water distribution tank, the water inlet pipe is arranged on one partition wall, and the longitudinal section of the water inlet side of the water inlet pipe is L-shaped.
8. The radial flow type composite wetland purification system of claim 5, wherein: the bottom of the subsurface flow wetland and the water distribution tank is a foundation of an integrated structure, the foundation comprises an anti-seepage film layer paved on the ground, a plain soil compaction layer is arranged on the anti-seepage film layer, the gradient of the foundation is 0.5-1.5%, the height of the center of the foundation is greater than that of the edge of the foundation, and grid cover plates are respectively covered on the water collecting and purifying channel and the top of the water distribution tank.
9. The radial flow type composite wetland purification system according to claim 1, wherein: the water collecting and purifying channel is internally and symmetrically provided with a pair of overflow weirs, the water collecting and purifying channel is divided into a purifying channel and a converging channel by the overflow weirs, the purifying channel is longer than the converging channel, the purifying channel is respectively communicated with the wetland treatment units, two ends of the purifying channel are positioned on the periphery of two adjacent wetland units, the outer side wall of the converging channel is provided with a drain pipe, and the drain pipe is provided with a third water valve.
10. The radial flow type composite wetland purification system of claim 9, wherein: the bottom of the purification channel is paved with a fine sand layer, and submerged plants are planted at the bottom of the purification channel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116062897A (en) * | 2022-09-08 | 2023-05-05 | 中国恩菲工程技术有限公司 | Efficient constructed wetland system and ecological purification method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116062897A (en) * | 2022-09-08 | 2023-05-05 | 中国恩菲工程技术有限公司 | Efficient constructed wetland system and ecological purification method thereof |
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