CN111305362B - Structure of seepage layer under park road based on initial rainwater closure purification - Google Patents
Structure of seepage layer under park road based on initial rainwater closure purification Download PDFInfo
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- CN111305362B CN111305362B CN202010235192.XA CN202010235192A CN111305362B CN 111305362 B CN111305362 B CN 111305362B CN 202010235192 A CN202010235192 A CN 202010235192A CN 111305362 B CN111305362 B CN 111305362B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0403—Gullies for use in roads or pavements with a sediment trap
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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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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0404—Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to a structure of a park road lower seepage layer based on initial rainwater closure purification, and belongs to the technical field of sponge city construction. A primary rainwater treatment chamber is established below a sidewalk, and a filter layer, a water seepage channel and a rainwater retention layer are established below an asphalt road; the primary rainwater treatment chamber is provided with a water inlet on an asphalt road, an overflow pipe leading to an urban rainwater pipe and a sand pumping pipe leading to the ground are also arranged in the primary rainwater treatment chamber, a buoyancy control switch and a mud isolating baffle are arranged in the primary rainwater treatment chamber, and the mud isolating baffle leads rainwater in the primary rainwater treatment chamber into the overflow pipe or a water seepage channel under the control of the buoyancy control switch; the asphalt road below sets gradually filter layer, infiltration passageway and rainwater detention layer, and the rainwater detention layer is connected with the cistern. The invention has the beneficial effects that: when the rainfall is small, precipitation infiltration is carried out; when the rainfall is large, rainwater flows into the water seepage channel to perform infiltration treatment; and when the rainfall is overlarge, guiding later-stage rainwater to be drained into an urban drainage system.
Description
Technical Field
The invention relates to a structure of a park road lower seepage layer based on initial rainwater closure purification, and belongs to the technical field of sponge city construction.
Background
The initial rain water is generally the rainfall which forms surface runoff and is 10-15mm thick on the ground. In the early stage of rainfall, a large amount of polluting gases such as acid gases, factory waste gas and the like in the air are dissolved in the rainwater, and after the rainwater falls to the ground, the rainwater in the early stage contains more pollutants such as heavy metals, nutrient salts, organic matters, suspended particles, PAHs and the like due to the scouring effect of the initial rainwater, so that the pollution degree is higher. The initial rainwater is generally collected by a rainwater drainage system and then directly drained into a natural bearing water body, so that very serious pollution is caused to the water body. The early-stage rainwater is treated, which has very important significance for maintaining water environment safety and good water ecological environment.
At present, the initial rainwater treatment technology in China mainly comprises a split-flow drainage technology, an initial rainwater discarding technology and the like. The split-flow drainage technology is that a split-flow device is arranged on a rainwater drainage system, so that initial rainwater is split-flow to a sewage pipe and then is conveyed to a sewage treatment plant, and later rainwater is directly drained into a water body. But the operation of the sewage treatment plant is impacted in load, and the operation difficulty is increased. And because two sets of pipelines are laid, the investment is large, and the construction difficulty is large. The initial rainwater discarding device is controlled to be turned on and off by the impact force or the electric power of rainwater according to the duration or the flow of rainfall, has larger dependence on the rainfall, has large limitation, can not be widely used, and is troublesome in operation management and later maintenance. In a word, the popularization and application conditions of the conventional initial rainwater treatment technology are not ideal.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the structure of the lower permeable layer of the park road based on the closure purification of the initial rainwater, the closure purification of the initial rainwater is carried out below the road and the sidewalk, the resource utilization of the initial rainwater is carried out, and the water resource is saved.
The invention is realized by the following technical scheme: the utility model provides a park road oozes structure on layer down based on initial stage rainwater dams purification which characterized in that: the method comprises the steps of establishing a primary rainwater treatment chamber below a sidewalk, and establishing a filter layer, a water seepage channel and a rainwater retention layer below an asphalt road;
the primary rainwater treatment chamber comprises a top gravel layer and a first percolation layer at the bottom, a permeable geotextile layer is arranged above the first percolation layer, a water inlet is arranged on an asphalt road of the primary rainwater treatment chamber, a grid is arranged on the water inlet, an overflow pipe leading to an urban rainwater pipe and a sand pumping pipe leading to the ground are also arranged in the primary rainwater treatment chamber, a buoyancy control switch and a mud isolating baffle are arranged in the primary rainwater treatment chamber, and the mud isolating baffle leads rainwater in the primary rainwater treatment chamber into the overflow pipe or a water seepage channel under the control of the buoyancy control switch; the asphalt road below set gradually filter layer, infiltration passageway and rainwater detention layer, the rainwater detention layer is connected with the cistern.
The buoyancy control switch comprises a support column, a special bearing, a waterproof plate, a waterproof lifting rope, a rubber air bag and a hard plastic net, wherein the special bearing is connected with the support column and the waterproof plate, the waterproof lifting rope lifts the rubber air bag on the waterproof plate, the sum of the length of the waterproof lifting rope and the height of the rubber air bag is smaller than the height of the support column, a mud separation baffle is arranged on one side, close to the water inlet, of the waterproof plate, and the hard plastic net surrounds the rubber air bag.
The infiltration passageway be the water pipe that the cross section is the square, and the water pipe below does not have the pipe wall for the rainwater infiltrates, the below of infiltration passageway is the geotechnological cloth layer that permeates water, the infiltration passageway is the slope form, the sand pumping pipe is connected to the least significant end of infiltration passageway.
The infiltration passageway establish in the filter layer, still be equipped with the concrete slab that permeates water between the below of filter layer and the rainwater detention layer.
And a third infiltration layer is arranged below the permeable geotextile layer and laid at the bottoms of the first infiltration layer and the rainwater retention layer.
The first percolation layer is formed by mixing quartz sand and gravel pebbles according to the proportion of 1:3, and is in a slope shape, and the horizontal included angle is 15 degrees.
The filter layer is formed by mixing hematite, activated carbon and quartz sand according to the ratio of 3:1: 6.
The third percolation layer is formed by mixing zero-valent iron, activated carbon and soil according to the proportion of 1:2: 7.
The invention has the beneficial effects that: (1) by adopting the initial rainwater in-situ treatment technology, the defects that two sets of pipelines need to be laid in a separate system drainage system and rainwater is directly discharged after being conveyed to a sewage treatment plant for treatment are overcome, the load operation of the sewage treatment plant is prevented, and the operation cost of the sewage treatment plant is reduced. (2) The method has small limitation, no dependence on rainfall, no need of energy sources such as electric power and the like, and precipitation and infiltration are carried out when the rainfall is small; when the rainfall is large, rainwater flows into the water seepage channel to perform infiltration treatment; when the rainfall is too large, the rubber air bag is under the buoyancy action of water, overturns and supports the waterproof plate, and guides later-stage rainwater to flow into the overflow gap and directly drain into the urban drainage system. (3) Convenient maintenance and management and difficult blockage. The current processing technique to initial stage rainwater ubiquitous silt silts up the problem of blockking up the pipeline, and later maintenance is very difficult. Due to the unique structure, the silt is accumulated at the silt pumping opening, and maintainers can carry the silt pumping pump to pump and discharge the silt. (4) The treatment effect is good, and the filter layer can remove pollutants such as heavy metals, nutritive salts, organic matters, suspended particles and the like in the initial rainwater, so that the pollution of the initial rainwater to the water body is prevented. (5) The rainwater is recycled, and the treated initial rainwater is stored in the reservoir, so that the later-stage utilization is facilitated.
Drawings
The invention is further illustrated below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
fig. 3 is a schematic view of the primary rainwater treatment chamber of the present invention when the rainfall is excessive.
Detailed Description
The structure of the park road lower seepage layer based on the initial rainwater interception and purification as shown in the figures 1 to 3 is characterized in that: the system comprises a primary rainwater treatment chamber 2 established below a sidewalk 1, and a filter layer 4, a water seepage channel 5 and a rainwater retention layer 6 established below an asphalt road 3;
the primary rainwater treatment chamber 2 comprises a top gravel layer 21 and a first percolation layer 22 at the bottom, a permeable geotextile layer 23 is arranged above the first percolation layer 22, a water inlet 24 is arranged on an asphalt road 3 of the primary rainwater treatment chamber 2, a grid is arranged on the water inlet 24, an overflow pipe 25 leading to a city rainwater pipe and a sand pumping pipe 26 leading to the ground are also arranged in the primary rainwater treatment chamber 2, a buoyancy control switch 27 and a mud isolating baffle 28 are arranged in the primary rainwater treatment chamber 2, and the mud isolating baffle 28 leads rainwater in the primary rainwater treatment chamber 2 into the overflow pipe 25 or the water seepage channel 5 under the control of the buoyancy control switch 27;
3 below of pitch road set gradually filter layer 4, infiltration passageway 5 and rainwater detention layer 6, rainwater detention layer 6 is connected with cistern 7.
The buoyancy control switch 27 comprises a supporting column 271, a special bearing 272, a waterproof board 273, a waterproof lifting rope 274, a rubber air bag 275 and a rigid plastic net 276, wherein the special bearing 272 is connected with the supporting column 271 and the waterproof board 273, the rubber air bag 275 is hung on the waterproof board 273 by the waterproof lifting rope 274, the sum of the length of the waterproof lifting rope 274 and the height of the rubber air bag 275 is smaller than the height of the supporting column 271, the mud baffle 28 is arranged on one side of the waterproof board 273, which is close to the water inlet 24, and the rigid plastic net 276 surrounds the rubber air bag 275.
And a third infiltration layer 8 is arranged below the permeable geotextile layer laid at the bottoms of the first infiltration layer 22 and the rainwater retention layer 6.
The first percolation layer 22 is formed by mixing quartz sand and gravel pebbles according to the proportion of 1:3, the first percolation layer 22 is in a slope shape, and the horizontal included angle is 15 degrees.
The filter layer 4 is formed by mixing hematite, activated carbon and quartz sand according to the proportion of 3:1: 6.
The third percolation layer 8 is formed by mixing zero-valent iron, activated carbon and soil according to the ratio of 1:2: 7.
In the rainy day, initial rainwater on the road flows into the primary rainwater treatment chamber 2 below the sidewalk 1 after being subjected to primary purification and solid impurity separation through the grille on the water inlet 24, the initial rainwater on the sidewalk seeps downwards to flow to the primary rainwater treatment chamber 2 through the water permeable bricks and the gravel and pebble layer 21, the length-width-height ratio of the primary rainwater treatment chamber 2 is 4:3:2, and the initial rainwater flows to the upper part of the water permeable geotextile layer 23 at the bottom of the primary rainwater treatment chamber 2 through the diversion of the waterproof plate 273 to be precipitated and seeped downwards. The first percolation layer 22 is formed by mixing quartz sand and gravel pebbles according to the proportion of 1:3, the initial rainwater which is infiltrated is secondarily filtered to remove suspended particles and colloid in the initial rainwater, the initial rainwater which is secondarily filtered is continuously infiltrated to the third percolation layer 8, wherein the third percolation layer 8 is formed by mixing zero-valent iron, activated carbon and soil according to the proportion of 1:2:7, and is used for removing pollutants such as heavy metals in the initial rainwater and preventing the initial rainwater from polluting underground water and underground soil layers.
As the precipitation continues, the amount of water in the primary rainwater treatment chamber 2 increases and the water level rises. When the water level is higher than the mud baffle 28, the rainwater can flow into the water seepage channel 5, the water seepage channel 5 is inclined, so that the settled silt is accumulated towards the other side, the silt is conveniently pumped out by the sand pumping pipe 26, and the water seepage channel 5 is prevented from being blocked. The downward-seeping rainwater and the rainwater passing through the permeable asphalt road 3 are filtered and purified together by the filter layer 4. The filter layer 4 removes pollutants such as heavy metals, nitrogen, phosphorus, and the like in the initial rainwater. The filtered initial rainwater permeates into the permeable geotextile layer and the permeable concrete slab 11, wherein the thickness of the permeable concrete slab 11 is 5cm, and the permeable concrete slab plays a role in bearing. The rainwater permeates into the rainwater retention layer 6 for storing the rainwater. Rainwater is detained layer 6 and is double-deck raft, and the geotechnological cloth layer that permeates water and the 8 levels of third infiltration layer below rainwater is detained layer 6 are placed for increase rainwater dwell time, the infiltration of being convenient for, and the level is placed and is favorable to overall structure's stability. One side at double-deck raft is water pipe 9, and the rainwater that does not ooze down rises along with the increase of water yield yet, and the rainwater leads to pipe 9 and flows into cistern 7. A water pipe 9 and a water pipe cover 10 are arranged above the reservoir 7 and can be connected with a water suction pump to perform resource utilization on initial rainwater.
Along with the continuous inrush of later stage rainwater, the water level sharply rises, and rubber gasbag 275 receives the buoyancy effect come-up of water, promotes the upset of waterproof board 273 for the entry of infiltration passageway 5 is sealed, and draws later stage rainwater to overflow pipe 25, discharges into city downspout through overflow pipe 25. Wherein the rigid plastic net 276 fixed on the waterproof board 273 has a larger diameter than the rubber air bag 275 and surrounds the rubber air bag 275, which acts to limit the moving range of the rubber air bag 275 and prevent the floating rubber air bag 275 from being unable to push the waterproof board 273 to turn over.
Claims (7)
1. The utility model provides a park road oozes structure on layer down based on initial stage rainwater dams purification which characterized in that: the system comprises a primary rainwater treatment chamber (2) established below a sidewalk (1), and a filter layer (4), a water seepage channel (5) and a rainwater retention layer (6) established below an asphalt road (3);
the primary rainwater treatment chamber (2) comprises a top gravel layer (21) and a first infiltration layer (22) at the bottom, a permeable geotextile layer (23) is arranged above the first infiltration layer (22), a water inlet (24) is formed in the asphalt road (3) of the primary rainwater treatment chamber (2), a grid is arranged on the water inlet (24), an overflow pipe (25) leading to a city rainwater pipe and a sand pumping pipe (26) leading to the ground are also arranged in the primary rainwater treatment chamber (2), a buoyancy control switch (27) and a mud isolating baffle plate (28) are arranged in the primary rainwater treatment chamber (2), and the mud isolating baffle plate (28) leads rainwater in the primary rainwater treatment chamber (2) into the overflow pipe (25) or the water seepage channel (5) under the control of the buoyancy control switch (27);
a filtering layer (4), a water seepage channel (5) and a rainwater retention layer (6) are sequentially arranged below the asphalt road (3), and the rainwater retention layer (6) is connected with a reservoir (7);
the buoyancy control switch (27) comprises a supporting column (271), a special bearing (272), a waterproof plate (273), a waterproof lifting rope (274), a rubber air bag (275) and a hard plastic net (276), wherein the special bearing (272) is connected with the supporting column (271) and the waterproof plate (273), the rubber air bag (275) is hung on the waterproof plate (273) through the waterproof lifting rope (274), the sum of the length of the waterproof lifting rope (274) and the height of the rubber air bag (275) is smaller than the height of the supporting column (271), a mud baffle (28) is arranged on one side, close to the water inlet (24), of the waterproof plate (273), and the hard plastic net (276) surrounds the rubber air bag (275).
2. The structure of the park road lower seepage layer based on the closure purification of the initial rainwater according to the claim 1, characterized in that: infiltration passageway (5) be the water pipe that the cross section is the square, and the water pipe below does not have the pipe wall for the rainwater infiltrates under, the below of infiltration passageway (5) is for permeating water geotechnological cloth layer (23), infiltration passageway (5) are the slope form, the sand pumping pipe (26) are connected to the lower extreme of infiltration passageway (5).
3. The structure of the park road lower seepage layer based on the closure purification of the initial rainwater according to the claim 1, characterized in that: infiltration passageway (5) establish in filter layer (4), still be equipped with pervious concrete board (11) between the below of filter layer (4) and rainwater detention layer (6).
4. The structure of the park road lower seepage layer based on the closure purification of the initial rainwater according to the claim 1, characterized in that: and a third infiltration layer (8) is arranged below the permeable geotextile layer laid at the bottoms of the first infiltration layer (22) and the rainwater retention layer (6).
5. The structure of the park road lower seepage layer based on the closure purification of the initial rainwater according to the claim 1, characterized in that: the first percolation layer (22) is formed by mixing quartz sand and gravel pebbles according to the proportion of 1:3, the first percolation layer (22) is in a slope shape, and the horizontal included angle is 15 degrees.
6. The structure of the park road lower seepage layer based on the closure purification of the initial rainwater according to the claim 1, characterized in that: the filter layer (4) is formed by mixing hematite, activated carbon and quartz sand according to the ratio of 3:1: 6.
7. The structure of the park road lower seepage layer based on the closure purification of the initial rainwater according to the claim 4, wherein: the third percolation layer (8) is formed by mixing zero-valent iron, activated carbon and soil according to the ratio of 1:2: 7.
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| KR20180071063A (en) * | 2016-12-19 | 2018-06-27 | (주) 디아이엔바이로 | Water catchment type water permeable block |
| CN108643327A (en) * | 2018-07-01 | 2018-10-12 | 沈阳建筑大学 | Suitable for the rainwater discharge of road, filtering, storage device |
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2020
- 2020-03-30 CN CN202010235192.XA patent/CN111305362B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201850631U (en) * | 2010-11-23 | 2011-06-01 | 镇江市高等专科学校 | Cone control intercepting well with equivalent intercepting sewage flow |
| DE102012001574A1 (en) * | 2012-01-27 | 2013-08-01 | 3P Technik Filtersysteme Gmbh | dehydrator |
| CN203782853U (en) * | 2014-04-29 | 2014-08-20 | 合肥工业大学 | Hydrodynamic self-control initial rainwater abandoning device |
| CN107460804A (en) * | 2016-06-02 | 2017-12-12 | 仁创生态环保科技股份有限公司 | Roadway rainwater collection system |
| CN206256506U (en) * | 2016-11-23 | 2017-06-16 | 四川理工学院 | A kind of road rainwater collecting and ecological treatment apparatus |
| KR20180071063A (en) * | 2016-12-19 | 2018-06-27 | (주) 디아이엔바이로 | Water catchment type water permeable block |
| CN108643327A (en) * | 2018-07-01 | 2018-10-12 | 沈阳建筑大学 | Suitable for the rainwater discharge of road, filtering, storage device |
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