CN103306360A - Multidimensional ecological drainage system for intercepting and controlling separate system rainwater pollutants into river - Google Patents

Multidimensional ecological drainage system for intercepting and controlling separate system rainwater pollutants into river Download PDF

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Publication number
CN103306360A
CN103306360A CN2013102368297A CN201310236829A CN103306360A CN 103306360 A CN103306360 A CN 103306360A CN 2013102368297 A CN2013102368297 A CN 2013102368297A CN 201310236829 A CN201310236829 A CN 201310236829A CN 103306360 A CN103306360 A CN 103306360A
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pool
rainwater
river
ecological
drop platform
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CN103306360B (en
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孙井梅
于海明
李阳
席兆胜
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Tianjin University
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Tianjin University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a multidimensional ecological drainage system for intercepting and controlling separate system rainwater pollutants into a river. The system is arranged on one side of a river bank and takes a stair-step shape along the river bank; rainwater in pipe networks flows into a first-stage water drop platform by rain-water pipes, enters a storage pond, flows into an ecological buffer zone by a second-stage water drop platform, and lastly flows into a plant growth detention pond; and the first-stage water drop platform and the ecological buffer zone are slope-shaped, and plants are planted in the plant growth detention pond. The system not only ensures drainage, but also reduces the risk that rainwater polluted run-offs directly flow into the river, reduces impact and damage to water quality of the water body in a river channel, effectively controls the pollutants in the river, effectively improves the water environment, and enhances the urban water landscape value.

Description

Be used for segregation system rainwater pollutants discharged into rivers and cut the multidimensional ecological drainage system of control
Technical field
The invention belongs to environment-friendly engineering and water-treatment technology field, be specifically related to a kind of for segregation system rainwater pollutants discharged into rivers cut control collection multidimensional infiltration, be stranded in the ecological drainage system of one.
Background technology
In recent years, the pollution situation of China's urban water-body is quite serious, and many rivers and lakes water body all is in more serious pollutional condition, and the trend that continues aggravation is arranged.The rainwater runoff pollution in most of city is comparatively serious, has become the primary factor of urban rivers and lakes water quality deterioration.Urban runoff directly enters the river course without any processing behind some rain, and the rainwater pollution runoff can form the pollution impact load directly into the river, causes the sudden water quality deterioration of urban landscape rivers in flood season.So, for the problem of river course water environment degradation, be difficult to change under the prerequisite of city planting ductwork, need to process and control entering channel flow pollutant (the present invention is mainly for the terminal rainwater of pipe network).
The segregation system drainage system against rain design of traditional city is that to get rid of as early as possible rainwater be fundamental starting point, and rainwater generally directly enters the river course by existing city planting ductwork inlet for stom water without preliminary treatment, and there are many drawbacks in this design.Seeking the city rainfall runoff control measures that how to satisfy environment, ecology, economic dispatch multiple benefits, is one of challenge of facing of current city management.
Summary of the invention
Purpose of the present invention, for the narrow situation of North City inland river river levee, in order to reduce floor space, utilize existing bank protection, design a kind of for entering the river pollution load to cut down rainfall runoff, slowing down the rainfall runoff flow as target, and the ecological drainage system that integrate the multidimensional infiltration, remains in a standstill namely is used for segregation system rainwater pollutants discharged into rivers and cuts the ecological drainage system of control.Native system also reaches drainage requirement when finishing rainwater " pruning modes ".
For alleviating rainwater to the more in short-term impact load of river course water environment, according to pipe network rain-water drainage characteristics in the survey region, by this multidimensional ecological drainage system pollution load larger early-stage rainwater and dry flow sewage are realized the water conservancy diversion effect of " turning dirty by rain; dystopy is processed ", reduce the rainwater pollution runoff directly into the risk in river, reduction is to the impact failure of river water body water quality, reach the purpose to rainwater and the control of runoff pollution decrement thereof, and when paying attention to pollutant buffering interception result and drainage effect, also can take into account the effect that increases the city river view.
The present invention is achieved by following technical solution.
Be used for segregation system rainwater pollutants discharged into rivers and cut the multidimensional ecological drainage system of control, it is characterized in that, this system is arranged on a side of river levee, and dike is stepped along the river;
The pipe network rainwater flows into first order drop platform 7 through storm sewer 4, enters storage pond 1 again; Described first order drop platform 7 along the river dike is 25~35 degree slopes downwards, the upper end, slope is connected with the vertical place of storm sewer 4 outlets, the lower end, slope is provided with the pool wall A17 of storage pond 1 vertically downward, and the opposite side of storage pond 1 is provided with pool wall B18, and the height of pool wall B18 is higher than pool wall A17; The top of pool wall B18 is provided with spillway hole 10; The bottom of storage pond 1 is provided with double-layer filter material, and the filtrate bottom is nature soil; The upper strata filtrate is the light filter material 5 that density is less, particle diameter is larger, and lower floor's filtrate is the heavy filtrate 6 that density is large, particle diameter is less; When the water yield hour, rainwater oozes from spillway hole 10, rainwater was then gone out by the top overflow of pool wall B18 when the water yield was large;
After rainwater flows out storage pond 1, flow into ecological buffer strip 2 through second level drop platform 8; Described second level drop platform 8 is arranged on the pool wall B18 downward one side of dike and be structure as a whole with pool wall B18 along the river; Along being provided with ecological buffer strip 2 on the downward river levee slope of second level drop platform 8, plant on the ecological buffer strip 2 and be implanted with little grass;
The lower end, slope of described ecological buffer strip 2 is provided with vertically downward plants living delaying basin 3, plant the side that living delaying basin 3 closes on ecological buffer strip 2 and be provided with pool wall C19, the pool wall C19 along the river downward one side of dike is provided with third level drop platform (9) and is structure as a whole with pool wall C19, and the opposite side of planting living delaying basin 3 is provided with pool wall D20; After rainwater flows out ecological buffer strip 2, plant living delaying basin 3 through 9 inflows of third level drop platform; Pool wall C19 exceeds ecological buffer strip 10~0.15m, and the raised area is arranged at intervals with overfall gap 16; The height of pool wall D20 is lower than pool wall C0.10~0.15m, and the rainwater cross flow enters in the river course when excessive with the assurance rainfall; The bottom of planting living delaying basin 3 is disposed with plantation soil layer 12, packing layer 13, counter-infiltration layer 14 and layer of gravel 15; The top kind of plantation soil layer 12 is implanted with plant 11.
Described pool wall A17, pool wall B18, pool wall C19, pool wall D20 are the non-fine concrete structure;
The upper spillway hole 10 that arranges of pool wall B18, it vertically is provided with 3 rows at least, horizontal every span 0.15~0.20m, the diameter of spillway hole 10 is 5~8cm.
The length of described storage pond 1 is 40~50m, and width is 0.8~1.0m, and the degree of depth is 0.7~0.9m, and pool wall thickness is 0.05~0.08m; The vertical distance of the outlet of described storm sewer 4 and upper end, first order drop platform 7 slopes is 0.3~0.4m.
Described light filter material 5 is anthracite, and its thickness is 0.10~0.14m; Described heavy filtrate 3 is quartz sand, and its thickness is 0.08~0.12m.
The described ecological buffer strip 2 along the river downward length of dike is 1.0~1.2m, and width is 45~55m.
Described length of planting living delaying basin 3 is 50~60m, and width is 0.9~1.1m, and the degree of depth is 1.0~1.2m, and pool wall thickness is 0.05~0.08m.
The gap length of the upper overfall gap 16 that arranges of pool wall C19 is 2~3m, and opening length is 0.20~0.30m.
The plantation soil layer 12 of planting the setting of living delaying basin 3 bottoms is the larger sandy soil of transmission coefficient, and thickness is 0.25~0.35m when adopting herbaceous plant; Packing layer 13 is not less than 10 for transmission coefficient -5The material of m/s, preferred material are slag, highly are 0.2~0.35m; Counter-infiltration layer 14 is geotextiles, enters lower floor to prevent the particles such as soil; Layer of gravel 15 is the gravel of diameter 0.04~0.05m, thickness 0.20~0.30m, to get rid of unnecessary rainwater.
Multidimensional ecological drainage system of the present invention can guarantee in draining, reduces the rainwater pollution runoff directly into the risk in river, reduces the impact failure to river water body water quality.Realize effective control of pollutants discharged into rivers and the improvement of water environment, bring the urban water-body landscape value to promote.
Imbody is as follows:
(1) makes up drainage system of the present invention at bank protection, can satisfy drainage requirement, can utilize existing resource again, reduce floor space.
(2) water intake mode is strong to the rainwater water yield and water quality adaptability, and effects of purification quality is reliable and stable.Wherein, the design of storage pond and ecological buffer strip can play buffering energy dissipating effect, prolongs the application life of planting living delaying basin.
(3) by plant hold back, the soil filtration effect purifies the early-stage rainwater runoff pollution, improve to enter river Runoff (especially slowing down pollutant that urban storm brings to the pollution of water body).Rainwater can ooze down, also can flow downward along bank protection, demonstrates fully the thought of multidimensional infiltration.Wherein, most suspended particulate contaminants in the rainfall runoff and be partly dissolved the attitude pollutant and can arrive effectively removal, but also heavy-metal ion removal, pathogen etc.
(4) by the flow velocity that plant is held back, the soil filtration effect reduces rainfall runoff, cut down run-off, reduce rainwater to the impact load of river water body, increased hydraulic detention time, demonstrate fully the thinking of delay.
(5) take full advantage of the runoff rainfall, replenish self-restraint underground water, also can be collected utilization to the rainwater after processing, alleviate the shortage of water resource, demonstrate fully sustained development theory;
(6) can improve landscape environment through rational design and appropriate maintenance, reach good landscape effect, demonstrate fully Application of Ecological Idea; Delaying basin is accumulated the transpiration of the evaporation endothermic of rainwater and plant can adjusting air humidity and temperature, alleviates heat island effect, the ambient conditions around improving.
(7) by rainwater being provided temporary transient storage area slow down rainfall runoff to the washing away of riverbank, play the purpose of protection Channel slope.
(8) measure of a kind of rainwater processing method of embodiment and relevant storm water management aspect is offered reference and directive function for pipe network enters river rainwater processing.
Description of drawings
Fig. 1 is multidimensional ecological drainage system elevation of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is that pool wall B looks local enlarged diagram in the right side among Fig. 3.
Reference numeral of the present invention is as follows:
The ecological buffer strip of 1---storage pond 2---
3---planting living delaying basin 4---storm sewer
5---light filter material 6---heavy filtrate
7---first order drop platform 8---second level drop platform
9---third level drop platform 10---spillway hole
11---plants 12---plantation soil layer
13---packing layer 14---counter-infiltration layer
15---layer of gravel 16---overfall gap
17---pool wall A18---pool wall B
19---pool wall C20---pool wall D
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further, the present invention adopts conventional technological means and conventional raw materials to implement.
Technical scheme of the present invention is that the rainwater of pipe network end is introduced the multidimensional ecological drainage system by lift pump, is satisfying under the prerequisite of draining, take the control runoff pollution as main, takes into account the control run-off.This system is arranged on a side of river levee, and dike is stepped along the river, mainly comprises three parts: storage pond 1, ecological buffer strip 2 and plant living delaying basin 3.
As shown in Figure 3, the pipe network rainwater enters storage pond 1 through the drop platform at first by storm sewer 4; Storage pond 1 is built the following position of river levee in, and a side is connected with river levee; First order drop platform 7 along the river dike is 25~35 degree slopes downwards, the upper end, slope is 0.3~0.4m apart from the vertical distance of storm sewer 4 outlets, the lower end, slope is a side pool wall A17 of storage pond 1 vertically downward, and the opposite side of storage pond 1 is provided with pool wall B18, and the height of pool wall B18 is higher than pool wall A17; The top of pool wall B18 is provided with spillway hole 10, and the quantity of spillway hole 10 laterally arranges one every 0.15~0.20m for longitudinally being provided with at least 3 rows, and diameter is 5~8cm.Its local amplification as shown in Figure 4; When the water yield hour, rainwater oozes from spillway hole 10, rainwater was then gone out by the top overflow of pool wall B18 when the water yield was large.The bottom of storage pond 1 is provided with double-layer filter material, and the filtrate bottom is nature soil, and the rainwater of the filtrate of flowing through can followingly ooze; The upper strata filtrate is the light filter material 5 that density is less, particle diameter is larger, preferred anthracite, and its thickness is 0.10~0.14m; Lower floor's filtrate is the heavy filtrate 6 that density is large, particle diameter is less, preferred quartz sand, and its thickness is 0.08~0.12m; The storage pond 1 of this structure can be held back the suspended impurity in the rainwater, thereby reduces the turbidity of rainwater, and the organic matter in the water, bacterium and even virus etc. will reduce and the part removal with the turbidity of water.The length of storage pond 1 is 40~50m, and width is 0.8~1.0m, and the degree of depth is 0.7~0.9m, and pool wall thickness is 0.05~0.08m.
After rainwater flows out storage pond 1, flow into ecological buffer strip 2 through second level drop platform 8; Described second level drop platform 8 is arranged on the pool wall B18 downward one side of dike and be structure as a whole with pool wall B18 along the river; Along being provided with ecological buffer strip 2 on the downward river levee slope of second level drop platform 8, plant on the ecological buffer strip 2 and be implanted with little grass, to satisfy the requirement of ecological revetment; Ecological buffer strip (2) the along the river downward length of dike is 1.0~1.2m, and width is 45~55m.
The lower end, slope of ecological buffer strip 2 is provided with vertically downward plants living delaying basin 3, and the length of planting living delaying basin 3 is 50~60m, and width is 0.9~1.1m, and the degree of depth is 1.0~1.2m, and pool wall thickness is 0.05~0.08m.Plant the side that living delaying basin 3 closes on ecological buffer strip 2 and be provided with pool wall C19, the pool wall C19 along the river downward one side of dike is provided with third level drop platform 9 and is structure as a whole with pool wall C19; The opposite side of planting living delaying basin 3 is provided with pool wall D20; After rainwater flows out ecological buffer strip 2, plant living delaying basin 3 through 9 inflows of third level drop platform; Pool wall C19 exceeds ecological buffer strip 0.10~0.15m, and the raised area is arranged at intervals with overfall gap 16, and the gap length of overfall gap 16 is 2~3m, and opening length is 0.20~0.30m, as shown in Figure 1 and Figure 2.The height of pool wall D20 is lower than pool wall C19, and the rainwater cross flow enters in the river course when excessive with the assurance rainfall.The bottom of planting living delaying basin 3 is disposed with plantation soil layer 12, packing layer 13, counter-infiltration layer 14 and layer of gravel 15; Rainwater flows automatically vertically downward by the plantation soil layer 12 of planting living delaying basin 3, packing layer 13, counter-infiltration layer 14, layer of gravel 15, rainwater be trapped with under ooze, when rainfall continues to increase, and when surpassing the supporting capacity of delaying basin, rainwater is drained into overflow in the river course.Plantation soil layer 12 adsorbs for root system of plant and microbiological deterioration provides a good place, has to filter preferably and suction-operated, generally selects the larger sandy soil of transmission coefficient; The planting soil layer thickness is decided according to vegetation type, and general thickness is about 0.25~0.35m when adopting herbaceous plant.The top kind of plantation soil layer 12 is implanted with plant 11, but that plant 11 should be selected is perennial and water-fast waterlogging of short time, such as canna, iris, hemerocailis middendorffi etc.Packing layer 13 mainly plays the infiltration effect, and can selecting the permeability such as slag, strong (transmission coefficient generally is not less than 10 -5M/s) material, its thickness should determine according to the Rainfall Characteristics of locality, the service area etc. of planting living delaying basin, and height of the present invention is 0.2~0.35m.Counter-infiltration layer 14 can prevent that the particle such as soil from entering layer of gravel, in order to avoid impact infiltration effect can arrange one deck geotextiles.Layer of gravel 15 can be got rid of unnecessary rainwater, and selecting diameter is 0.04~0.05m, and thickness is the gravel of 0.20~0.30m.
Described pool wall A16, pool wall B17, pool wall C18, pool wall D19 are the non-fine concrete structure.

Claims (9)

1. one kind is used for segregation system rainwater pollutants discharged into rivers and cuts the multidimensional ecological drainage system of control, it is characterized in that, this system is arranged on a side of river levee, and dike is stepped along the river;
The pipe network rainwater flows into first order drop platform (7) through storm sewer (4), enters storage pond (1) again; Described first order drop platform (7) along the river dike is 25~35 degree slopes downwards, the upper end, slope is connected with the vertical place of storm sewer (4) outlet, the lower end, slope is provided with the pool wall A(17 of storage pond (1) vertically downward), the opposite side of storage pond (1) is provided with pool wall B(18), pool wall B(18) height be higher than pool wall A(17); Pool wall B(18) top is provided with spillway hole (10); The bottom of storage pond (1) is provided with double-layer filter material, and the filtrate bottom is nature soil; The upper strata filtrate is the light filter material that density is less, particle diameter is larger (5), and lower floor's filtrate is the heavy filtrate (6) that density is large, particle diameter is less; When the water yield hour, rainwater oozes from spillway hole (10), rainwater was then by pool wall B(18 when the water yield was large) the top overflow and go out;
After rainwater flows out storage pond (1), flow into ecological buffer strip (2) through second level drop platform (8); Described second level drop platform (8) is arranged on pool wall B(18) along the river the downward one side of dike and with pool wall B(18) be structure as a whole; Along being provided with ecological buffer strip (2) on the downward river levee slope of second level drop platform (8), upper kind of ecological buffer strip (2) is implanted with little grass;
The lower end, slope of described ecological buffer strip (2) is provided with vertically downward plants living delaying basin (3), plant the side that living delaying basin (3) closes on ecological buffer strip (2) and be provided with pool wall C(19), pool wall C(19) along the river the downward one side of dike be provided with third level drop platform (9) and with pool wall C(19) be structure as a whole, the opposite side of planting living delaying basin (3) is provided with pool wall D(20); After rainwater flows out ecological buffer strip (2), plant living delaying basin (3) through third level drop platform (9) inflow; Pool wall C(19) exceed ecological buffer strip (2) 0.10~0.15m, the raised area is arranged at intervals with overfall gap (16); Pool wall D(20) height is lower than pool wall C(19) 0.10~0.15m, the rainwater cross flow enters in the river course when excessive with the assurance rainfall; The bottom of planting living delaying basin (3) is disposed with plantation soil layer (12), packing layer (13), counter-infiltration layer (14) and layer of gravel (15); The top kind of plantation soil layer (12) is implanted with plant (11).
2. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that described pool wall A(17), pool wall B(18), pool wall C(19), pool wall D(20) be the non-fine concrete structure.
3. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that pool wall B(18) the upper spillway hole (10) that arranges, it vertically is provided with 3 rows at least, horizontal every span 0.15~0.20m, the diameter of spillway hole (10) is 5~8cm.
4. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that, the length of described storage pond (1) is 40~50m, and width is 0.8~1.0m, the degree of depth is 0.7~0.9m, and pool wall thickness is 0.05~0.08m; The vertical distance of the outlet of described storm sewer (4) and upper end, first order drop platform (7) slope is 0.3~0.4m.
5. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that, described light filter material (5) is anthracite, and its thickness is 0.10~0.14m; Described heavy filtrate (3) is quartz sand, and its thickness is 0.08~0.12m.
6. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that, described ecological buffer strip (2) the along the river downward length of dike is 1.0~1.2m, and width is 45~55m.
7. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that, described length of planting living delaying basin (3) is 50~60m, and width is 0.9~1.1m, the degree of depth is 1.0~1.2m, and pool wall thickness is 0.05~0.08m.
8. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that pool wall C(19) gap length of the upper overfall gap (16) that arranges is 2~3m, opening length is 0.20~0.30m.
9. according to claim 1 the segregation system rainwater pollutants discharged into rivers that is used for cuts the multidimensional ecological drainage system of control, it is characterized in that, the plantation soil layer (12) of planting the setting of living delaying basin (3) bottom is the larger sandy soil of transmission coefficient, and thickness is 0.25~0.35m when adopting herbaceous plant; Packing layer (13) is not less than 10 for transmission coefficient -5The material of m/s, preferred material are slag, highly are 0.2~0.35m; Counter-infiltration layer (14) is geotextiles, enters lower floor to prevent the particles such as soil; Layer of gravel (15) is the gravel of diameter 0.04~0.05m, thickness 0.20~0.30m, to get rid of unnecessary rainwater.
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Publication number Priority date Publication date Assignee Title
CN104196277A (en) * 2014-09-29 2014-12-10 上海交通大学 Functional rainwater garden suitable for interior of urban community grassy area in Shanghai
CN104876335A (en) * 2015-06-01 2015-09-02 北京建筑大学 Two-phase bioretention pond with synchronous phosphorous and nitrogen removal function and construction method thereof
CN105672467A (en) * 2016-04-07 2016-06-15 深圳市创环环保科技有限公司 Primary rainwater purification device
CN106703155A (en) * 2016-12-28 2017-05-24 北京桑德环境工程有限公司 Urban open trench black and odorous water body treatment method
CN108425425A (en) * 2018-01-25 2018-08-21 苏坤 Sponge city catchment disappear big vast regulator control system and regulation and control method
CN111005506A (en) * 2019-11-25 2020-04-14 广东康君实业发展有限公司 Energy-saving environment-friendly roof system of green building

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Publication number Priority date Publication date Assignee Title
CN104196277A (en) * 2014-09-29 2014-12-10 上海交通大学 Functional rainwater garden suitable for interior of urban community grassy area in Shanghai
CN104876335A (en) * 2015-06-01 2015-09-02 北京建筑大学 Two-phase bioretention pond with synchronous phosphorous and nitrogen removal function and construction method thereof
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CN111005506A (en) * 2019-11-25 2020-04-14 广东康君实业发展有限公司 Energy-saving environment-friendly roof system of green building

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