CN207469399U - The abandoned stream of rainwater-collecting is with cutting dirty governing system - Google Patents

Abstract

The utility model relates to a waste flow and sewage interception treatment system for rainwater collection, which belongs to the technical control field of sponge city. The waste flow and sewage interception treatment system of rainwater collection is set in a rectangular shape, adopting a symmetrical design, including a waste flow rainwater collection chamber, a rainwater decontamination chamber and a rainwater filtration chamber from the middle to both sides, and a rainwater waste flow chamber is set at the bottom. The volumes of the rainwater decontamination chamber, the rainwater waste flow chamber and the rainwater filter chamber are equal, and the volume of the waste flow rainwater collection chamber is set to be 1.5 to 2 times the volume of the rainwater decontamination chamber, rainwater filter chamber, and rainwater waste flow chamber. The structure of the utility model It is simple, small in size, easy to process, and low in cost. It can effectively solve the current problems of rainwater waste collection, purification, and sewage interception treatment, and realizes automatic control of collection, sewage interception, filtration, purification, and discharge. A clean state is conducive to the normal operation and use of the device, and is of great significance to the goal of water ecological restoration.

Description

Disposal and interception treatment system for rainwater harvesting

technical field

The utility model belongs to the technical control field of the sponge city, in particular to a waste flow and sewage interception treatment system for rainwater collection.

Background technique

Sponge city is a new generation of urban stormwater management concept. It refers to the city's good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city". The international general term is "low-impact development stormwater system construction". When it rains, it absorbs, stores, infiltrates, filters, and purifies water, and "releases" the stored water and uses it when necessary.

With the development of urbanization, the accumulation of pollutants makes the pavement rainwater hold a large amount of pollutants. Some road runoff studies have shown that the pollution load in the initial 30% rainwater runoff accounts for 70% of the entire rainfall pollution. Therefore , The interception and treatment of initial rainwater can effectively control the water pollution caused by runoff. At present, there are different measures for rainwater pollution treatment at home and abroad. Most of the foreign countries directly collect rainwater for reuse. Domestically, the initial rainwater is directly introduced into the sewage treatment plant, ignoring the limited decontamination capacity of the sewage treatment plant. Disposal Discharge directly into natural water bodies. Therefore, it is necessary to dispose of the rainwater in the early stage, and develop a rainwater collection and interception treatment system that can make up for these deficiencies, divert the rainwater at the beginning of the rainfall to the sewage pipes, and pre-treat the rainwater with a lesser degree of pollution in the later stage of the rainfall. Intercept sand, gravel and other particulate impurities and a large number of pollutants in the water, and filter and purify them many times to meet the recycling standard, and use the purified and filtered rainwater to maintain the lawn and improve the utilization rate of water resources.

Some flow discarding devices in the prior art have many disadvantages, such as the designed volume is too large or the designed volume is too small, some devices are manually operated and controlled, and sometimes they are prone to failure, some are more complicated in structure design, and some are too expensive. Moreover, the residence time of the initial rainwater is too long, and particulate impurities such as sand and gravel and a large amount of pollutants are easy to precipitate, which can easily cause blockage of the device, which is not conducive to the normal use of the device.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a rainwater collection waste flow and sewage interception treatment system, which can effectively solve the current problems of rainwater waste flow collection, purification, and sewage interception treatment, and realizes collection, sewage interception, and filtration. , automatic control of purification and discharge.

In order to achieve the above object, the technical solution adopted by the utility model is:

A waste flow and sewage interception treatment system for rainwater collection, comprising a waste flow rainwater collection chamber (1), a rainwater decontamination chamber (2), a rainwater filter chamber (3), a rainwater waste flow chamber (4), and a rainwater grate (5 ), rainwater outlet (6), waste flow chamber outlet (7), rainwater communication hole (8), rainwater waste flow chamber purification control hole (9), rainwater waste flow chamber control hole (10), piston slide ( 11), connecting rod (12), bottom plate (13), sliding piston (14), water outlet side plate (15), floating ball (16), rainwater decontamination chamber inspection cover (17), decontamination basket (18), Sand filter layer (19), rainwater filter chamber maintenance cover (20), filter device (21), water purification layer (22), non-woven geotextile layer (23), oil removal layer (24) and water salt, heavy metal ions The adsorption layer (25) is characterized in that: the waste flow and sewage interception treatment system for rainwater collection is arranged in a rectangular shape, adopts a symmetrical design, and includes a waste flow rainwater collection chamber (1) and a rainwater decontamination chamber ( 2) and the rainwater filter chamber (3), a rainwater discarding chamber (4) is arranged below; a rainwater grate (5) is arranged in the discarding rainwater collection chamber (1), and the side wall of the discarding rainwater collection chamber (1) The position of 6/7～5/6 of the height is provided with a rainwater communication hole (8), and the position of 3/5～2/3 of the height of the side wall of the waste flow rainwater collection chamber (1) is provided with a purification control of the rainwater waste flow chamber hole (9), the middle and lower part of the side wall of the abandoned flow rainwater collection chamber (1) is provided with a rainwater abandoned flow chamber control hole (10), and the bottom part of the side wall of the abandoned flow rainwater collection chamber (1) is provided with a piston slideway ( 11), the floating ball (16) in the waste flow rainwater collection chamber (1) is connected with the sliding piston (14) on the connecting rod (12) and the piston slideway (11), and the upper part of the connecting rod (12) is connected with a floating The ball (16), the lower part is connected with a sliding piston (14), and the sliding piston (14) is sleeved on the bottom of the piston slideway (11); the rainwater decontamination chamber (2) is provided with a decontamination basket (18), and there is a rainwater decontamination basket (18) above Decontamination chamber maintenance cover (17); rainwater filter chamber (3) is provided with filter device (21), and filter device (21) is provided with water quality purification layer (22), non-woven geotextile layer (23), oil removal layer (24), water salt, heavy metal ion adsorption layer (25), the top is provided with rainwater filter chamber maintenance cover (20); rainwater decontamination chamber (2) and rainwater filter chamber (3) Unicom is provided with sandstone filter layer ( 19), the bottom of the rainwater collection waste flow and sewage interception treatment system is provided with a bottom plate (13), and the two sides of the rainwater collection waste flow and sewage interception treatment system are provided with water outlet side panels (15), and the water outlet side panels (15) The middle part is provided with a rainwater outlet (6), and the lower part is provided with a waste chamber outlet (7). The volumes of the rainwater decontamination chamber (2), rainwater disposal chamber (4) and rainwater filter chamber (3) are equal, The volume of the rainwater collecting chamber (1) is set to be 1.5 to 2 times the volume of the rainwater decontamination chamber (2), the rainwater filtering chamber (3) and the rainwater discarding chamber (4).

Further, the rainwater grate (5) is preferably made of stainless steel, the rainwater decontamination chamber inspection cover (17), the decontamination basket (18), the rainwater filtration chamber inspection cover (20) and the filter device (21) It is preferably made of stainless steel, and the decontamination basket (18) and filter device (21) are replaced regularly to facilitate maintenance and cleaning.

Further, the sliding piston (14) and the floating ball (16) are at the bottom of the piston slideway (11) in the initial state, and the top of the floating ball (16) is close to the purification control hole (9) of the rainwater discarding chamber; When the rainwater is collected, the sliding piston (14) slides to the top of the piston slideway (11) to block the control hole (10) of the rainwater abandonment flow chamber. (9) above.

Further, the connecting rod (12) is arranged in a herringbone shape.

Further, the bottom surface of the decontamination basket (18) is provided with a plurality of permeable holes, which are arranged at equal intervals preferably, which helps rainwater to flow into the decontamination basket (18) and then filter out silt and larger sand particles and broken pieces. Particle impurities such as rocks, so as to achieve the primary purification effect on the rainwater carrying a large amount of pollutants, and the decontamination basket (18) is replaced regularly, which is convenient for maintenance and cleaning. 18) the bottom surface is preferentially evenly distributed.

Further, the sand and gravel filter layer (19) is paved with sand and gravel, and the thickness of the pavement is 25-30cm, which is used to filter out small sand, stones and other granular substances in the rainwater, because the sand and gravel filter layer (19) has a certain porosity, so the small suspended solids and other impurities in the rainwater can be intercepted through this sandstone filter layer (19) with a certain porosity, so as to purify the rainwater carrying a large amount of pollutants again Effect.

Further, the water purification layer (22) is preferably filled with zeolite, the particle size of the zeolite is preferably 20-30mm, and the pavement thickness is 15-20cm. The water purification layer (22) is replaced regularly, and it is easy to maintain and clean; The geotextile layer (23) is preferably made of synthetic fibers through needle-punching or weaving, and the pavement thickness is 15-20cm, which is used to filter the relatively small impurities in the stagnant water. Replacement, maintenance and cleaning are convenient; the degreasing layer (24) is paved with a thickness of 15 to 20 cm, and the oily substances emulsified in water are gathered and precipitated, and the degreasing layer (24) is replaced regularly, which is convenient for maintenance and cleaning; the water salt and heavy metal ion adsorption layer (25 ) Pavement thickness is 15-20cm, which can effectively absorb the water and salt components and heavy metal ion substances left in the seepage water.

Further, the cross-sectional area of the rainwater outlet (6) is set to be 1 to 1.5 times the cross-sectional area of the rainwater communication hole (8).

Further, the cross-sectional area of the water outlet (7) of the waste chamber is set to be 1 to 1.5 times the cross-sectional area of the control hole (10) of the rainwater waste chamber; the cross-sectional area of the water outlet (7) of the waste chamber is set to It is 15-20 times of the cross-sectional area of the purification control hole (9) of the rainwater abandonment chamber.

Further, the bottom surfaces of the rainwater decontamination chamber (2) and the rainwater filtration chamber (3) are at the same height.

When the rainfall is slightly small, the initial rainwater enters the waste flow rainwater collection chamber (1) through the rainwater grate (5), the initial rainwater enters the rainwater waste flow chamber (4) through the rainwater waste flow chamber control hole (10), and passes through the waste flow chamber The water outlet (7) discharges;

When the rainfall gradually increases, the rainwater will continue to rise in the discarded rainwater collection chamber (1) and the rainwater discarded chamber (4), the floating ball (16) will continue to rise, and the connecting rod (12) will drive the sliding piston (14) The upper part of the piston slideway (11) plugs the control hole (10) of the rainwater disposal chamber, and the rainwater continuously enters the rainwater decontamination chamber (2) through the rainwater communication hole (8) and the rainwater disposal chamber purification control hole (9) , is filtered through the decontamination basket (18), enters the rainwater filter cavity (3) through the sand filter layer (19), is filtered again through the filter device (21) and is discharged through the rainwater outlet (6);

When the rainfall gradually decreases and stops, the rainwater in the abandoned flow rainwater collection chamber (1) gradually decreases, and the rainwater continuously flows out from the rainwater abandoned flow chamber purification control hole (9). When the rainwater drops to the highest position of the floating ball (16), The floating ball (16) descends slowly, and the sliding piston (14) gradually lowers on the piston slideway (11) and slowly opens the control hole (10) of the rainwater abandonment cavity, and the relatively clean rainwater flushes the rainwater abandonment cavity (4 ), and discharged through the outlet (7) of the jettison cavity.

The beneficial effects of the utility model:

The utility model has the advantages of simple structure, small volume, easy processing, and low cost, and can effectively solve the current problems of rainwater waste stream collection, purification, and interception treatment, and realizes collection, interception, filtration, purification, and discharge. Automatic control keeps the whole device in a clean state, which is conducive to the normal operation and use of the device, and is of great significance to the goal of water ecological restoration.

Description of drawings

Below in conjunction with the accompanying drawings, the rainwater collection in the utility model is further described with respect to the abandonment flow and the sewage interception control system:

Fig. 1 is a schematic diagram of the waste flow and sewage interception treatment system of the utility model rainwater collection.

Figure 2 is a schematic diagram of the filtration device.

In the figure: 1 is the waste flow rainwater collection chamber; 2 is the rainwater decontamination chamber; 3 is the rainwater filter chamber; 4 is the rainwater waste flow chamber; 5 is the rainwater grate; 6 is the rainwater outlet; 7 is the waste flow chamber outlet; 8 is the rainwater communication hole; 9 is the purification control hole of the rainwater abandonment cavity; 10 is the control hole of the rainwater abandonment cavity; 11 is the piston slide; 12 is the connecting rod; 13 is the bottom plate; 14 is the sliding piston; 15 is the water outlet side plate 16 is a floating ball; 17 is a rainwater decontamination cavity maintenance cover; 18 is a decontamination basket; 19 is a sand filter layer; 20 is a rainwater filter cavity maintenance cover; 21 is a filter device; 22 is a water purification layer; Spun geotextile layer; 24 is an oil removal layer; 25 is an adsorption layer for water, salt and heavy metal ions.

Detailed ways

In order to further illustrate the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be understood as limiting the protection scope of the utility model.

Embodiment: As shown in Figure 1-Figure 2, the waste flow and sewage interception treatment system for rainwater collection is arranged in a rectangular shape, adopts a symmetrical design, and includes the waste flow rainwater collection chamber (1), rainwater decontamination Cavity (2) and rainwater filter cavity (3), the bottom surface of rainwater decontamination cavity (2) and rainwater filter cavity (3) are at the same height, is provided with rainwater discard flow cavity (4) below it, rainwater decontamination cavity ( 2) is provided with a decontamination basket (18), a filter device (21) is provided in the rainwater filter chamber (3), and a sandstone filter layer ( 19), there is a bottom plate (13) under the waste flow and sewage interception treatment system for rainwater collection, and water outlet side plates (15) are arranged on both sides of the waste flow and sewage interception treatment system for rainwater collection, and the rainwater decontamination chamber (2 ), the volume of the rainwater discarding chamber (4) and the rainwater filter chamber (3) are equal, and the volume of the discarded rainwater collection chamber (1) is set as the rainwater decontamination chamber (2), the rainwater filter chamber (3), and the rainwater discarding chamber The cavity (4) is 1.5 to 2 times the volume; the middle part of the water outlet side plate (15) is provided with a rainwater outlet (6), and the lower part is provided with a waste chamber outlet (7); the rainwater grate (5) is preferably made of stainless steel It has strong firmness and firmness. The rainwater decontamination chamber inspection cover (17), the decontamination basket (18), the rainwater filtration chamber inspection cover (20) and the filter device (21) are preferably made of stainless steel. and the decontamination basket (18) and filter device (21) can be replaced regularly, which is convenient for maintenance and cleaning; the position of the side wall height of 6/7～5/6 of the waste flow rainwater collection chamber (1) is provided with rainwater communication The holes (8) and 3/5-2/3 of the height of the side wall of the waste flow rainwater collection chamber (1) are provided with rainwater waste flow chamber purification control holes (9), and the side walls of the waste flow rainwater collection chamber (1) The middle and lower part of the wall is provided with a control hole (10) for the rainwater abandonment cavity; (16) Connect the sliding piston (14) on the connecting rod (12) with the piston slideway (11). The upper part of the connecting rod (12) is connected with the floating ball (16), and the lower part is connected with the sliding piston (14). The piston (14) is set on the bottom of the piston slideway (11); in the initial state, the sliding piston (14) is set on the bottom of the piston slideway (11), and the top of the floating ball (16) is close to the purification control hole of the rainwater disposal chamber (9), when the rainwater is collected, the sliding piston (14) slides to the upper part of the piston slideway (11) to block the control hole (10) of the rainwater abandonment cavity, and at this moment, the bottom of the floating ball (16) is the rainwater abandonment flow above the chamber purification control hole (9); the connecting rod (12) is set in a herringbone shape; the bottom surface of the decontamination basket (18) is provided with a plurality of water permeable holes, which are preferably set at equal intervals to help rainwater flow into the decontamination basket (18) After filtering to remove silt and larger sand, gravel and other particulate impurities, to achieve the primary purification effect on the rainwater carrying a large amount of pollutants, and the decontamination basket (18) can be replaced regularly, easy to maintain and clean, and permeable hole of hole The diameter is about 10mm ~ 20mm, and the permeable holes are preferentially and evenly distributed on the bottom surface of the decontamination basket (18); the sand filter layer (19) is paved with sand and stone, and the pavement thickness is 25 ~ 30cm, which is used to filter out rainwater Smaller granular substances such as sand and stones, because the sand filter layer (19) has a certain porosity, so the smaller suspended particles in the rainwater can be intercepted by this sand filter layer (19) with a certain porosity. Solids and other impurities, in order to purify the rainwater carrying a large amount of pollutants again.

As shown in Figure 1, the cross-sectional area of the rainwater outlet (6) is set to 1 to 1.5 times the cross-sectional area of the rainwater communication hole (8), and the cross-sectional area of the outlet (7) of the waste flow chamber is set The cross-sectional area of the flow chamber control hole (10) is 1 to 1.5 times, and the cross-sectional area of the outlet of the waste flow chamber (7) is set to 15 to 20 times the cross-sectional area of the rainwater waste flow chamber purification control hole (9) ; When the rainfall is slightly small, the initial rainwater enters the abandoned flow rainwater collection chamber (1) through the rainwater grate (5), and the initial rainwater enters the rainwater abandoned flow chamber (4) through the rainwater abandoned flow chamber control hole (10), and passes through the abandoned flow Cavity outlet (7) is discharged; when rainfall increases gradually, rainwater rises constantly in the discarded flow rainwater collection chamber (1), rainwater discarded flow chamber (4), and the floating ball (16) rises continuously, and the connecting rod ( 12) Drive the sliding piston (14) to the upper part of the piston slideway (11) to block the control hole (10) of the rainwater disposal chamber, and the rainwater will continuously enter through the rainwater communication hole (8) and the purification control hole (9) of the rainwater disposal chamber In the rainwater decontamination chamber (2), it is filtered through the decontamination basket (18), enters the rainwater filtration chamber (3) through the sand filter layer (19), is filtered again by the filter device (21) and passes through the rainwater outlet (6) Discharge; when the rainfall gradually decreases and stops, the rainwater in the abandoned flow rainwater collection chamber (1) gradually decreases, and the rainwater continuously flows out from the rainwater abandoned flow chamber purification control hole (9). When the rainwater drops to the highest level of the floating ball (16), Position, the floating ball (16) slowly descends, the sliding piston (14) gradually lowers on the piston slide (11) and slowly opens the control hole (10) of the rainwater disposal chamber, and the relatively clean rainwater flushes the rainwater disposal chamber (4), and discharge through the outlet of the flow chamber (7).

As shown in Figure 2, the filter device (21) is provided with a water purification layer (22), the water purification layer (22) is preferably filled with zeolite, the zeolite particle size is preferably 20-30mm, and the pavement thickness is 15-20cm , and the water purification layer (22) can be replaced regularly, which is convenient for maintenance and cleaning; the filter device (21) is provided with a non-woven geotextile layer (23), and the non-woven geotextile layer (23) can remove the smaller impurities in the accumulated water Garbage is filtered, and synthetic fibers are preferred to be made by needling or weaving. The pavement thickness is 15-20cm, and the non-woven geotextile layer (23) can be replaced regularly, which is convenient for maintenance and cleaning; the filter device (21) is provided with Oil removal layer (24), the oil removal layer (24) can make the oily substances emulsified in water gather and separate out, the pavement thickness is 15～20cm, and the oil removal layer (24) can be replaced regularly, easy to maintain and clean; filter device (21) An adsorption layer (25) for water salt and heavy metal ions is provided, and the water salt and heavy metal ion adsorption layer (25) can effectively absorb substances such as water salt components and heavy metal ions left in seepage water, and the paving thickness is 15 to 20 cm, and The water, salt and heavy metal ion adsorption layer (25) can be replaced regularly, and the maintenance and cleaning are convenient.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (9)

1. the abandoned stream of rainwater-collecting is with cutting dirty governing system, including abandoned stream rainwater-collecting chamber (1), rainwater decontamination chamber (2), rainwater mistake Filter chamber (3), rain water drainage chamber (4), rain perforaled strainer (5), rainwater water outlet (6), abandoned stream chamber water outlet (7), rainwater linked hole (8), rain water drainage chamber purification control hole (9), rain water drainage chamber control hole (10), piston slideway (11), connecting rod (12), bottom plate (13), sliding plunger (14), water outlet side plate (15), floater shot (16), rainwater decontamination chamber access cover (17), decontamination basket (18), sand Stone filter layer (19), dmp filter chamber access cover (20), filter device (21), purification of water quality layer (22), non-woven geotechnical cloth layer (23), except oil reservoir (24) and water salt, heavy metal ion adsorbed layer (25), it is characterised in that：The abandoned stream of rainwater-collecting is controlled with cutting dirt Reason system is set as rectangle, is designed using symmetrical expression, includes abandoned stream rainwater-collecting chamber (1) successively from centre to both sides, rainwater removes Dirty chamber (2) and dmp filter chamber (3), rain water drainage chamber (4) is provided in lower section；Setting is rainy in abandoned stream rainwater-collecting chamber (1) Leaf grating for down pipe (5), 6/7~5/6 position setting rain linked hole (8), the abandoned stream of the Sidewall Height of abandoned stream rainwater-collecting chamber (1) 3/5~2/3 position of the Sidewall Height of rainwater-collecting chamber (1) is provided with rain water drainage chamber purification control hole (9), abandoned stream rainwater The middle and lower part of the side wall of collecting chamber (1) is provided with rain water drainage chamber control hole (10), under the side wall of abandoned stream rainwater-collecting chamber (1) Portion is provided with piston slideway (11), and the floater shot (16) in abandoned stream rainwater-collecting chamber (1) is using connecting rod (12) and piston slideway (11) sliding plunger (14) connection on, the top of connecting rod (12) are connected with floater shot (16), and lower part is connected with sliding plunger (14), sliding plunger (14) is sleeved on the bottom of piston slideway (11)；Decontamination basket (18), top are provided in rainwater decontamination chamber (2) Rain decontamination chamber access cover (17)；Filter device (21) is provided in dmp filter chamber (3), filter device is provided in (21) Purification of water quality layer (22), non-woven geotechnical cloth layer (23), except oil reservoir (24), water salt, heavy metal ion adsorbed layer (25), top setting Rain filter chamber access cover (20)；Rainwater decontamination chamber (2) and dmp filter chamber (3) connection position is provided with sandstone filter layer (19), the abandoned stream of rainwater-collecting is provided with bottom plate (13) with cutting below dirty governing system, and the abandoned stream of rainwater-collecting is controlled with cutting dirt The both sides of reason system are provided with water outlet side plate (15), the middle part setting rain water outlet (6) of water outlet side plate (15), lower part setting There is abandoned stream chamber water outlet (7), the volume of rainwater decontamination chamber (2), rain water drainage chamber (4) and dmp filter chamber (3) is equal, abandoned stream rain The volume of water collecting chamber (1) be set as rainwater decontamination chamber (2), dmp filter chamber (3), rain water drainage chamber (4) volume 1.5~2 Times.

2. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The rain perforaled strainer (5) it is preferentially made using stainless steel material, rainwater decontamination chamber access cover (17), decontamination basket (18), the maintenance of dmp filter chamber Lid (20) and filter device (21) are preferentially made using stainless steel material, and decontamination basket (18) and filter device (21) are regular more It changes, to maintain easily cleaning.

3. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The connecting rod (12) It is set as chevron shaped.

4. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The decontamination basket (18) Bottom surface be provided with multiple permeable holes, preferentially using spaced set, rainwater is contributed to filter off silt after flowing into decontamination basket (18) The granule foreigns such as mud and the larger grains of sand, rubble, to achieve the effect that primary purification to the rainwater for carrying a large amount of pollutants, and It decontaminates basket (18) to regularly replace, maintenance and cleaning is convenient, and the aperture of permeable hole is about 10mm~20mm, and permeable hole is in decontamination basket (18) bottom surface is preferentially uniformly distributed.

5. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The sandstone filter layer (19) it is laid with using sandstone, pavement thickness is 25~30cm, for filtering off the smaller grains of sand in rainwater, stone graininess Substance.

6. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The purification of water quality layer (22) it is preferentially filled using zeolite, sized zeolite particles are preferentially using 20~30mm, and pavement thickness is 15~20cm, water quality Purifying layer (22) regularly replaces, and maintenance and cleaning is convenient；Non-woven geotechnical cloth layer (23) is preferentially pierced or is compiled by needle using synthetic fibers It knits and is made, pavement thickness is 15~20cm, for impurity rubbish relatively fine in ponding to be filtered, nonwoven geotechnique Layer of cloth (23) regularly replaces, and maintenance and cleaning is convenient；Except oil reservoir (24) pavement thickness is 15~20cm, will be emulsifiable in water Oily matter segregation, except oil reservoir (24) regularly replaces, maintenance and cleaning is convenient；Water salt, heavy metal ion adsorbed layer (25) paving Dress thickness be 15~20cm, can effectively adsorb infiltration in there are water salt component, heavy metal ion substance, water salt, a huge sum of money Belong to ionic adsorption layer (25) to regularly replace, maintenance and cleaning is convenient.

7. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The rainwater water outlet (6) cross-sectional area is set as 1~1.5 times of the cross-sectional area of rainwater linked hole (8).

8. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The abandoned stream chamber water outlet Mouth (7) cross-sectional area is set as 1~1.5 times of the cross-sectional area of rain water drainage chamber control hole (10)；Abandoned stream chamber water outlet (7) Cross-sectional area is set as 15~20 times of the cross-sectional area of rain water drainage chamber purification control hole (9).

9. the abandoned stream of rainwater-collecting is with cutting dirty governing system according to claim 1, it is characterised in that：The rainwater decontamination The bottom surface of chamber (2) and dmp filter chamber (3) is in sustained height.