CN112851017B - Multifunctional initial rainwater treatment ecological pond system and method - Google Patents
Multifunctional initial rainwater treatment ecological pond system and method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 161
- 238000003860 storage Methods 0.000 claims abstract description 37
- 230000004224 protection Effects 0.000 claims abstract description 27
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 10
- 239000013589 supplement Substances 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 5
- 238000001764 infiltration Methods 0.000 claims 5
- 238000009736 wetting Methods 0.000 claims 1
- 238000005325 percolation Methods 0.000 abstract description 16
- 238000001914 filtration Methods 0.000 abstract description 3
- 241000196324 Embryophyta Species 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
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- 239000007789 gas Substances 0.000 description 2
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- 238000003911 water pollution Methods 0.000 description 2
- 244000205574 Acorus calamus Species 0.000 description 1
- 244000257727 Allium fistulosum Species 0.000 description 1
- 235000008553 Allium fistulosum Nutrition 0.000 description 1
- 241001494508 Arundo donax Species 0.000 description 1
- 235000011996 Calamus deerratus Nutrition 0.000 description 1
- 241000219991 Lythraceae Species 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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Abstract
The invention relates to a multifunctional initial rainwater treatment ecological pond system and a method, wherein the ecological pond system comprises an ecological slope protection, a footpath platform and a wet pond side slope which are positioned at the periphery of a wet pond, a percolation dam is arranged in a wet pond area, the percolation dam divides the wet pond area into a water storage area and a sedimentation area, the sedimentation area is provided with a water inlet channel, the water inlet channel is connected with a water inlet grid, the sedimentation area and the water storage area are connected with an internal circulation pump station through a circulation pipeline, and the internal circulation pump station is connected with a water outlet pipeline. The multifunctional initial rainwater treatment method comprises the following steps: the initial rainwater flows into the water inlet grid and the water inlet channel by self weight, the water inlet channel flows to the sedimentation area after being distributed by the water falling weir, the settled rainwater flows into the water storage area after being filtered by the percolation dam, the initial rainwater is stored in the water storage area, and the ecological pond stops water inflow after the water storage area reaches the designed regulated water level. The invention utilizes the current situation low-lying pool to carry out sedimentation, filtration and storage on the initial rainwater and then lift the initial rainwater to a sewage plant for treatment, and the treated water supplements the river water body, thereby realizing the pollution control of the initial rainwater and the utilization of rainwater resources.
Description
Technical Field
The invention relates to the technical field of initial rainwater runoff control, in particular to a multifunctional initial rainwater treatment ecological pond system and method.
Background
The initial rainwater dissolves acidic gas, automobile exhaust and factory waste gas in the air, and the acid gas, automobile exhaust and factory waste gas fall to the ground and then scour roads, roofs and the like, so that the initial rainwater carries pollutants such as nitric oxide, heavy metal, organic matters and pathogens, the pollution load in the initial 20% rainwater runoff accounts for 80% of the rainfall pollution of the whole field, part of pollution concentration indexes even reach the concentration standard of primary sewage, the initial rainwater is directly discharged into surface water and underground water, the pollution of urban water sources is aggravated, the sustainable utilization of water resources is influenced, and the surface source pollution caused by water resource shortage is aggravated.
Aiming at the problems, the initial rainwater needs to be treated before being discharged into the river water body, pollutants in the rainfall are intercepted and then discharged into the bearing water body, the water environment is effectively protected, and the rainwater resource is recycled. The existing initial rainwater treatment system has use limitation in the actual operation process, and has the problems of sedimentation and incomplete filtration.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a multifunctional initial rainwater treatment ecological pond system and a multifunctional initial rainwater treatment ecological pond method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a multifunctional initial rainwater treatment ecological pond system comprises an ecological slope protection, a footpath platform and a wet pond side slope which are positioned on the periphery of a wet pond, wherein a percolation dam is arranged in a wet pond area, the percolation dam divides the wet pond area into a water storage area and a sedimentation area, the sedimentation area is provided with a water inlet channel, the water inlet channel is connected with a water inlet grid, the sedimentation area and the water storage area are connected with an internal circulation pump station through a circulation pipeline, and the internal circulation pump station is connected with a water outlet pipeline.
Further, the pavement platform sets up between ecological bank protection and wet pond side slope, and ecological bank protection includes ecological cylinder liner, lays planting soil layer and seed planting plant layer on ecological cylinder liner, and the ecological cylinder liner of ecological bank protection is the ecological protection blanket of anti runoff anti erosion.
Further, the wet pond protection slope comprises an impermeable layer, a backfill soil layer and a gravel scattering and covering layer with the diameter of 40-60 mm.
Further, the inlet channel is reinforced concrete structure, and the play water department of inlet channel sets up the hydraulic weir, through the even water distribution of hydraulic weir to subsidence area, the inlet channel bottom sets up the blow off pipe, regularly clears up.
Furthermore, the percolation dam is constructed by wrapping gravel with 40-60mm in diameter by a gabion mesh, and two ends of the percolation dam are connected with the wet pond protection slope through gabions. Silt and other insoluble pollutants carried by the initial rainwater enter the water storage area after being filtered by the gravel.
A multifunctional initial rainwater treatment method comprises the following steps:
the initial rainwater flows into the water inlet grid and the water inlet channel by the dead weight, the water inlet channel is distributed by the water falling weir and then flows to the sedimentation region for sedimentation, the settled rainwater flows into the water storage region after being filtered by the percolation dam, the water storage region is used for storing the initial rainwater, the ecological pond stops water inflow after the water storage region reaches a designed regulation water level, the rainwater at the middle and later periods is discharged into a river channel, the water storage region temporarily stores the rainwater and then lifts the rainwater to a sewage plant for treatment, and a drain hopper is arranged at the bottom of the water storage region for periodically dredging the water storage region;
the ecological pond periodically lifts the reclaimed water to the water inlet channel through the internal circulation pump station, passes through the water drop area and the sedimentation area, and then enters the water storage area, so that the internal circulation of the water body is realized.
Furthermore, the settling zone is used for settling silt and solid pollutants carried by initial rainwater, and the settling zone adopts a soil-rock structure.
Furthermore, the water storage area is a main pond area and is used for storing initial rainwater, and the water storage area adopts an earth-rock structure.
Furthermore, in rainy season, the initial rainwater is temporarily stored in the wet pond, lifted to a sewage plant through a lifting pump station for treatment, and then discharged into a river channel to be used as river channel water supplement, so that the cyclic utilization of water resources is realized.
Furthermore, in non-rainy seasons, the reclaimed water is supplemented as the landscape ecological water body.
Furthermore, the inside and the periphery of the ecological pond are planted with the hygrophytes or aquatic vegetations, so that on one hand, the overall landscape effect of the wet pond can be improved, and on the other hand, the water pollution inside the wet pond can be effectively controlled.
The beneficial effects of the invention are as follows: the system can settle, filter and store solid pollutants in initial rainwater. The invention utilizes the current situation of the low-lying pool, does not need to arrange a rainwater lifting pump station and a water collecting tank, and saves the investment and the operating cost. In rainy season, the initial rainwater is settled, filtered, stored and lifted to a sewage plant for treatment by the ecological pond, and the treated water supplements the river water body, so that the initial rainwater pollution control and the rainwater resource utilization are realized. In non-rainy seasons, the reclaimed water is supplemented to serve as landscape ecological water, aquatic plants are planted in the ecological pond, initial rainwater is temporarily stored, landscape effect is considered, investment is low, operation cost is low, ecological benefit is high, and maintenance is convenient.
Drawings
FIG. 1 is a schematic structural view of a multifunctional initial rainwater treatment ecological pond system of the present invention;
fig. 2 is a schematic sectional view of the multifunctional initial rainwater treatment ecological pond system of the present invention.
In the figure: 1-ecological slope protection, 2-footpath, 3-wet pond side slope, 4-water inlet grille, 5-water inlet channel, 6-settling zone, 7-percolation dam, 8-water storage zone, 9-internal circulation pump station, 10-circulation pipeline and 11-water outlet pipeline.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1 and fig. 2, the multifunctional initial rainwater treatment ecological pond system comprises an ecological slope protection 1 positioned on the periphery of a wet pond, a walkway platform 2 and a wet pond side slope 3, wherein a percolation dam 7 is arranged in a wet pond area, the percolation dam 7 divides the wet pond area into a water storage area 8 and a sedimentation area 6, the sedimentation area 6 is provided with a water inlet channel 5, the water inlet channel 5 is connected with a water inlet grid 4, the sedimentation area 6 and the water storage area 8 are connected with an internal circulation pump station 9 through a circulation pipeline 10, and the internal circulation pump station 9 is connected with a water outlet pipeline 11.
Wherein, ecological pond does not construct initial stage rainwater lift pump station, and the direct dead weight of first rain flows into ecological pond, so ecological pond is darker, and ecological pond adopts the form of ecological bank protection 1 and the 3 second grade bank protections of wet pond side slope, sets up pavement platform 2 between the two-stage bank protection, and pavement platform 2 sets up between ecological bank protection 1 and wet pond side slope 3, specifically is: in order to ensure that rainwater flows into the ecological pond by self weight, the depth of the ecological pond is deeper, so the ecological pond site selection utilizes the existing low-lying pool, in order to ensure the stability of the ecological pond, the slope of a first-stage ecological slope protection 1 is divided into two stages, slope excavation is carried out, the slope of a second-stage wet pond slope 3 is 1:3, and a 2 m-wide footpath platform 2 is arranged between the two stages of slope protection.
Further, ecological bank protection 1 adopts ecological cylinder mat + planting soil + seed to broadcast the bank protection form of plant, and ecological bank protection main part is the ecological protection blanket of anti runoff anti-erosion.
The wet pond protection slope (3) comprises an impermeable layer, a backfill soil layer and a gravel scattered covering layer with the diameter of 40-60 mm.
The water inlet channel 5 is of a reinforced concrete structure, a water falling weir is arranged at the water outlet of the water inlet channel 5, and water is uniformly distributed to the settling area 6 through the water falling weir.
The percolation dam 7 filters silt and other insoluble pollutants carried along with initial rainwater, the percolation dam 7 is designed to be trapezoidal and is built by wrapping gravels with large grain diameters of 40-60mm in diameter by gabions, the fast filtering effect of the percolation dam 7 at the normal water level can be ensured, and two ends of the percolation dam 7 are connected with the wet pond protection slope (3) through gabions.
The bottom of the water storage area 8 adopts thick clay, two cloth films (waterproof cloth and waterproof film) for seepage prevention, clay backfill with the thickness of 500mm, a gravel layer with the diameter of 40-60mm and the thickness of 100mm for scattered overlaying, and aquatic plants are planted at the bottom of the water storage area 8.
In addition, the wetland vegetation is planted around the wet pond, so that the water pollution in the wet pond can be effectively controlled, the overall landscape effect of the wet pond is improved, and the plants in the wet pond mainly comprise calamus flavus, arundo donax linn, loosestrife, allium fistulosum and submerged plants.
A multifunctional initial rainwater treatment method comprises the following steps:
the initial rainwater flows into the water inlet grid 4 and the water inlet channel 5 by the self weight, the water inlet channel 5 is distributed by the water falling weir and then flows to the sedimentation region 6 for sedimentation, the settled rainwater flows into the water storage region 8 after being filtered by the percolation dam 7, the water storage region 8 is used for storing the initial rainwater, the ecological pond stops water inflow after the water storage region 8 reaches the designed regulated water level, and the rainwater at the middle and later stages is discharged into a river channel;
the ecological pond periodically lifts the reclaimed water to the water inlet channel 5 through the internal circulation pump station 9, passes through the water drop area and the sedimentation area 6, and then enters the water storage area 8, so that the internal circulation of the water body is realized.
Wherein, subside zone 6 is used for deposiing silt and the solid pollutant that initial stage rainwater carried, and subside zone 6 adopts the earth-rock structure. The water storage area 8 is a main pond area and is used for storing initial rainwater, and the water storage area 8 is of an earth-rock structure.
The settlement zone is divided into normal water level and regulation water level, and the regulation water level is unanimous with the first rain pipeline bottom elevation, and normal water level is the ecological water level of view, and the ecological water level of view control is 1 meter.
The water level of the water storage area is divided into a normal water level and a regulated water level, the regulated water level is an initial rainwater regulated water level, the normal water level is a landscape ecological water level, and the landscape ecological water level is controlled to be 1 meter.
In rainy season, after the initial rainwater is temporarily stored in the ecological pond, the initial rainwater is lifted to a sewage treatment plant through an internal circulation pump station 9 to be treated and then used as river water for supplementing water, so that the rainwater resource is recycled.
In non-rainy seasons, the rainwater wets the pond and is drained, and after dredging the water inlet channel 5, the water drop area and the sedimentation area 6, the reclaimed water is supplemented to be used as the landscape ecological water body. The bottom of the settling area and the bottom of the water storage area are provided with emptying hoppers for dredging the settling area and the water storage area, and the bottom and the periphery of the draining hoppers are provided with cement mortar protective walls to be used as a working table surface for dredging.
In addition, a water replenishing pipeline can be arranged, the reclaimed water automatically flows into the rainwater wet pond, and the reclaimed water is designed to directly supplement and enter the main pond area.
In order to ensure the internal water quality of the ecological pond, the ecological pond is provided with an internal circulation system, the regenerated water in the rainwater wet pond main pond area is periodically lifted to the water inlet channel 5 through the internal circulation pump station 9, passes through the water falling area and the sedimentation area 6 and then enters the water storage area 8, the internal circulation of the water body is realized, and the internal water quality of the ecological pond is ensured.
When the water quality in the ecological pond deteriorates, the ecological pond is lifted to a sewage plant through the internal circulation pump station 9 for treatment, and then the sewage is discharged into a river channel to be used as river channel water supplement.
The system can settle, filter and store solid pollutants in initial rainwater. The invention utilizes the current situation of the low-lying pool, does not need to arrange a rainwater lifting pump station and a water collecting tank, and saves the investment and the operating cost. In rainy season, the initial rainwater is settled, filtered, stored and lifted to a sewage plant for treatment by the ecological pond, and the treated water supplements the river water body, so that the initial rainwater pollution control and the rainwater resource utilization are realized. In non-rainy seasons, the reclaimed water is supplemented to serve as landscape ecological water, aquatic plants are planted in the ecological pond, initial rainwater is temporarily stored, landscape effect is considered, investment is low, operation cost is low, ecological benefit is high, and maintenance is convenient.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an ecological pond system is handled to multi-functional initial stage rainwater, is located wet pond outlying ecological bank protection (1), pavement platform (2), wet pond side slope (3), its characterized in that, has infiltration dam (7) in the wet pond region, infiltration dam (7) are regional for the pool area of wetting for retaining district (8) and subsidence area (6), subsidence area (6) have inlet channel (5), inlet channel (5) are connected into water grid (4), subsidence area (6) and retaining district (8) are through circulation pipeline (10) connection inner loop pump station (9), inner loop pump station (9) are connected outlet pipeline (11).
2. The ecological pond system of multi-functional initial rainwater processing of claim 1, characterized in that, the pavement platform (2) sets up between ecological bank protection (1) and wet pond side slope (3), and ecological bank protection (1) includes ecological mat, lays planting soil layer and seed planting thing layer on ecological mat, and ecological mat of ecological bank protection (1) is runoff resistant anti erosion's ecological protection blanket.
3. The multifunctional initial rainwater treatment ecological pond system according to the claim 1, wherein the wet pond side slope (3) comprises an impermeable layer, a backfill layer and a gravel scattered overlaying layer with the diameter of 40-60 mm.
4. The multifunctional initial rainwater treatment ecological pond system according to claim 2 or 3, wherein the water inlet channel (5) is of a reinforced concrete structure, a water drop weir is arranged at the water outlet of the water inlet channel (5), and water is uniformly distributed to the sedimentation area (6) through the water drop weir.
5. The multifunctional initial rainwater treatment ecological pond system according to claim 4, wherein the infiltration dam (7) is constructed by wrapping gravels with a diameter of 40-60mm by a gabion mesh, and two ends of the infiltration dam (7) are connected with the wet pond side slope (3) through gabions.
6. A multifunctional initial rainwater treatment method using the ecological pond system of any one of claims 1 to 5, which comprises the following steps:
the initial rainwater flows into the water inlet grid (4) and the water inlet channel (5) by self weight, the water inlet channel (5) is distributed by the water falling weir, then flows to the sedimentation region (6) for sedimentation, the settled rainwater is filtered by the infiltration dam (7) and then flows into the water storage region (8), the water storage region (8) is used for storing the initial rainwater, the ecological pond stops water inflow after the water storage region (8) reaches the designed regulated water level, and the rainwater at the middle and later stages is discharged into a river channel;
The ecological pond periodically lifts the reclaimed water to the water inlet channel (5) through the internal circulation pump station (9), passes through the water drop area and the sedimentation area (6), and then enters the water storage area (8), so that internal circulation of the water body is realized.
7. The multifunctional primary rainwater treatment method according to claim 6, wherein the settling zone (6) is used for settling silt and solid pollutants carried by the primary rainwater, and the settling zone (6) adopts an earth-rock structure.
8. The multifunctional primary rainwater treatment method according to claim 6, wherein the impoundment area (8) is a main pond area for storing primary rainwater, and the impoundment area (8) adopts an earth-rock structure.
9. The multifunctional initial rainwater treatment method according to claim 6, wherein the initial rainwater is temporarily stored in the wet pond in rainy season, lifted to a sewage plant by a lifting pump station for treatment, and then discharged to a river channel to be used as river channel water supplement, so that the water resource is recycled.
10. The multifunctional initial rainwater treatment method according to claim 6, wherein the reclaimed water is supplemented as the landscape ecological water body in non-rainy season.
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| CN100400438C (en) * | 2005-09-21 | 2008-07-09 | 中国环境科学研究院 | Nutrient-rich river-lake water body and initial rainwater composite artificial wet land treating system |
| JP6139127B2 (en) * | 2012-03-28 | 2017-05-31 | 晴明 山崎 | Rainwater storage tank water level management system |
| CN202730934U (en) * | 2012-08-07 | 2013-02-13 | 白璐 | System for intercepting, shunting, regulating, storing and treating initial rainwater |
| CN103195157B (en) * | 2013-04-09 | 2014-12-24 | 环境保护部华南环境科学研究所 | System and method for runoff in-situ processing in early days of urban rainfall |
| CN103821218B (en) * | 2014-02-17 | 2015-11-25 | 广州市市政工程设计研究总院 | A kind of early-stage rainwater and rain dirt mixing overflow water retain seepage flow facility |
| CN106869079A (en) * | 2017-04-01 | 2017-06-20 | 王寿兵 | A kind of water course in situ purification and water storage system |
| CN107503396A (en) * | 2017-07-10 | 2017-12-22 | 中国十七冶集团有限公司 | A kind of hillside fields rainwater regulator control system |
| CN211447204U (en) * | 2019-09-04 | 2020-09-08 | 中国建筑第八工程局有限公司 | Rainwater preposed pond for automatically storing rainwater and purifying water quality |
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