CN112376352B

CN112376352B - Sponge urban rainwater collection and purification integrated system

Info

Publication number: CN112376352B
Application number: CN202011166823.3A
Authority: CN
Inventors: 周礼艳
Original assignee: Shenzhen Xiangtai Construction Engineering Co ltd
Current assignee: Shenzhen Xiangtai Construction Engineering Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2022-02-11
Anticipated expiration: 2040-10-27
Also published as: CN112376352A

Abstract

The utility model relates to a sponge city rainwater is collected and is purified integrated system, it includes the road surface water-collecting mechanism that the flow direction along the rainwater set gradually, green zone drainage mechanism, retaining mechanism, purification mechanism and header tank, water purification mechanism includes the purifying box, the inside of purifying box has set gradually the long-pending husky room along rainwater flow direction, the room that thoughtlessly congeals, ultraviolet sterilization oxidation chamber and adsorption chamber, long-pending husky room and thoughtlessly congeal and be provided with first subregion board between the room, the overflow mouth has been seted up to first subregion board, the overflow mouth is provided with flocculating agent charge device, the purifying box just is located the intercommunication of adsorption chamber lateral wall and has the drain pipe, the one end that the purifying box was kept away from to the drain pipe is connected with the header tank. This application has the impurity that can reduce the collection rainwater, improves the utilization scope of retrieving the rainwater.

Description

Sponge urban rainwater collection and purification integrated system

Technical Field

The invention relates to the field of urban water resource utilization, in particular to a sponge urban rainwater collection and purification comprehensive system.

Background

The areas in south and north China have the condition of uneven water resource and deficient water resource, along with the popularization and development of urban construction, the green land area is reduced, the natural landforms such as green land and wetland that originally have the function of conserving and storing water evolve to urban hard ground, the waterlogging disaster happens when heavy rainfall, the water resource loss after rainstorm causes dry lack of water, "it is necessary to waterlog to meet the rain, the phenomenon of drought promptly after rain" makes the retaining and the drainage balance of city suffer destruction.

The sponge city can adapt to environmental changes and respond to natural disasters with good elasticity, follows the regulation principle of ecological environment, realizes the accumulation, infiltration and reutilization of rainwater to the utmost extent on the premise of guaranteeing urban drainage and waterlogging prevention, and can solve the current urban situation of water resource shortage and ecological environment destruction at present.

The problem of single function of catchmenting usually exists in the processing is collected to conventional sponge urban rainwater, and the rainwater is collected the back and is directly discharged into the water or carry out the irrigation of vegetation, view, because natural rainwater is mingled with the subaerial impurity of air neutralization, the quality of water condition is relatively poor, and the field of rainwater reuse is restricted.

Disclosure of Invention

In order to improve the current relatively poor, the great phenomenon of pollution of quality of water condition after urban rainwater is collected, enlarge the utilization scope of retrieving the rainwater, this application provides a sponge urban rainwater and collects and purify integrated system.

The application provides a sponge city rainwater is collected and is purified integrated system adopts following technical scheme:

a sponge urban rainwater collection and purification integrated system comprises a road surface water collection mechanism, a green belt water filtering mechanism, a water storage mechanism, a purification mechanism and a water collection tank which are sequentially arranged along the flowing direction of rainwater, wherein the green belt water filtering mechanism is used for primarily filtering the rainwater of the road surface water collection mechanism, the water storage mechanism is positioned below the green belt water filtering mechanism, the water storage mechanism is used for storing the rainwater in the green belt water filtering mechanism, and the green belt purification mechanism is used for purifying the rainwater in the water storage mechanism;

the water purification mechanism includes the purifying box, the inside of purifying box has set gradually long-pending husky room, has coagulated the room, ultraviolet sterilization oxidation chamber and adsorption chamber along rainwater flow direction, long-pending husky room and coagulate and be provided with first subregion board between the room, the overflow mouth has been seted up to first subregion board, the overflow mouth is provided with flocculating agent charge device, the purifying box just is located the adsorption chamber lateral wall intercommunication and has the drain pipe, the one end that the purifying box was kept away from to the drain pipe is connected with the header tank.

Through adopting above-mentioned technical scheme, the road surface rainwater that the mechanism of catchmenting on the road surface collected gets into green belt drainage mechanism and carries out the prefiltering, store the inside in retaining mechanism afterwards, the inside rainwater of retaining mechanism purifies through the purifying box, the rainwater subsides silt through the long-pending husky room, get into the room of coagulating through the overflow mouth afterwards and carry out the subsiding of suspended solid, the rainwater is mixed with flocculating agent charge device's medicament in overflow mouth position, the flocculation thing subsides carries out in the coagulating box, it carries out oxidation sterilization to get into ultraviolet sterilization oxidation chamber afterwards, it carries out the absorption of peculiar smell and harmful substance to get into the adsorption chamber again, collect inside the header tank at last, the impurity of rainwater reduces by a wide margin, can improve the scope that rainwater was recycled.

Preferably, the coagulating chamber and the ultraviolet sterilization oxidation chamber are provided with a second partition plate, the second partition plate is provided with an overflowing port, the overflowing port is provided with a strong oxidant dosing device, and the ultraviolet sterilization oxidation chamber is provided with an ultraviolet sterilization lamp.

Through adopting above-mentioned technical scheme, the rainwater is in overflowing mouthful position and strong oxidant charge device's medicament mixture, and the ultraviolet germicidal lamp is used for killing the microorganism in the rainwater, and strong oxidant forms superoxide radical simultaneously under the ultraviolet light condition in the rainwater, and superoxide radical carries out chemical degradation to organic pollutant.

Preferably, flocculating agent charge device and strong oxidant charge device all set up the string bag of cylinder form, the string bag rotates and sets up in the inner wall of purifying box, one side that the string bag is towards the rainwater flow direction is provided with the screw.

Through adopting above-mentioned technical scheme, the rainwater mixes with the inside medicine grain of string bag when the string bag, and the rainwater striking promotes the screw rotation on the screw surface simultaneously, and the screw drives the string bag rotation, can improve the mixing efficiency of medicine grain and rainwater.

Preferably, be provided with the third subregion board between ultraviolet sterilization oxidation chamber and the adsorption chamber, the mouth that flows on has been seted up to the third subregion board, be provided with the zone increasing board that separates into two cavities with the adsorption chamber in the adsorption chamber, the mouth that flows down has been seted up to the zone increasing board, from the top down has set gradually a plurality of silver-carrying activated carbon layers in the cavity.

Through adopting above-mentioned technical scheme, inside the rainwater in the ultraviolet sterilization oxidizing chamber got into the adsorption chamber through the upstream mouth, the rainwater was in proper order through the year silver-colored active carbon of two cavities, can adsorb impurity such as peculiar smell, noxious material, has bactericidal action simultaneously, has effectively avoided the active carbon to breed the problem that the bacterium leads to aquatic nitrite to produce.

Preferably, the road surface water collecting mechanism comprises a road base layer and a water collecting cavity positioned inside the road base layer, a drainage ditch communicated with the top surface of the water collecting cavity is formed in the surface of the road base layer, and the water collecting cavity is connected with a water supply pipe for supplying water to the green belt water filtering mechanism.

Through adopting above-mentioned technical scheme, the rainwater on road bed surface collects inside the escape canal, drops inside the chamber that catchments through the escape canal afterwards to carry green belt drainage mechanism through the delivery pipe.

Preferably, the chamber that catchments is separated through the baffler and is formed just water and abandon class chamber and diversion chamber, the top of baffler rotates and is provided with just water and abandons class chamber or diversion chamber and carry out the guide plate of water diversion, one side that the guide plate is close to just water and abandons class chamber is provided with the floater, one side that the guide plate is close to diversion chamber rotates and sliding connection has the sand setting tank, vertical sliding connection about sand setting tank and the diversion chamber, the bottom in diversion chamber is provided with the spring that supports sand setting tank rebound to the top butt with the diversion chamber, the water pipe is located one side of sand setting tank dorsad honeycomb duct.

Through adopting above-mentioned technical scheme, the rainwater that drops to catchment intracavity portion originally carries a large amount of impurity, abandons the chamber through the leading-in water of guide plate just, abandons when the water level of the intracavity portion of just abandoning rises to a take the altitude, and the floater come-up bears the guide plate upset, and the downward compression spring of sand box this moment, the guide plate with the rainwater water conservancy diversion inside the sand box, silt can subside inside the sand box, the rainwater is inside the delivery pipe that overflows from the top of sand box.

Preferably, the green belt water filtering mechanism comprises a soil layer, a fine sand layer and a gravel layer which are sequentially arranged from top to bottom, plants are planted on the soil layer, and one end, far away from the water collecting cavity, of the water delivery pipe extends into the gravel layer.

Through adopting above-mentioned technical scheme, the rainwater of soil horizon upper surface permeates the fine sand layer through the soil horizon, gets into the gravel layer afterwards and joins with the inside rainwater of flow pipe, permeates inside the retaining mechanism after the gravel layer filters.

Preferably, one end of the water supply pipe, which is far away from the water collecting cavity, is connected with a plurality of water distribution pipes, the water distribution pipes are laid on the gravel layer, and the water distribution pipes are provided with a plurality of water seepage holes.

Through adopting above-mentioned technical scheme, the rainwater of flow pipe permeates inside the gravel layer through the infiltration hole of a plurality of distributive pipes, can improve the filter effect.

Preferably, the water storage mechanism comprises a water storage area formed by splicing a plurality of water storage modules and a waterproof membrane arranged on the side wall and the bottom of the water storage area in a wrapping mode.

Through adopting above-mentioned technical scheme, inside the rainwater infiltration of grit layer water storage district, the water-proof membrane wraps up the water storage district, prevents the loss of water, realizes the retaining function of water storage district.

Preferably, the bottom surface of the drainage ditch is communicated with the water collecting cavity through a vertically arranged sewer pipe, an intercepting cylinder is detachably arranged in the sewer pipe, one end, close to the water collecting cavity, of the intercepting cylinder is in a closed arrangement, a distance is reserved between the outer side wall, close to the bottom, of the intercepting cylinder and the sewer pipe, a plurality of water outlet holes are formed in the side wall of the intercepting cylinder, and a plurality of thin columns which are arranged in a staggered manner are arranged on the inner side wall of the intercepting cylinder.

Through adopting above-mentioned technical scheme, when the rainwater passes through the interception section of thick bamboo of downcomer, the thin post can intercept impurity such as rubbish, hair, branch, avoids more impurity to get into and catchments the intracavity portion.

In summary, the present application includes at least one of the following beneficial technical effects:

1. rainwater is purified by the purification box and finally collected in the water collection box, so that impurities in the rainwater are greatly reduced, and the reutilization range of the rainwater can be enlarged;

2. rainwater falling into the water collecting cavity at first carries a large amount of impurities, the rainwater is guided into the primary water discarding cavity through the guide plate, then the guide plate guides the rainwater into the sand box, silt can be settled in the sand box, and the rainwater overflows into the water feeding pipe from the top of the sand box, so that the silt amount of the rainwater is reduced;

3. the rainwater on soil horizon upper surface permeates fine sand layer through the soil horizon, gets into the gravel layer afterwards and joins with the inside rainwater of water supply pipe, permeates inside the retaining mechanism after the gravel layer filters.

Drawings

FIG. 1 is a schematic view of the overall structure of a sponge urban rainwater collection and purification integrated system in this embodiment;

FIG. 2 is a partially enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a gravel layer according to this embodiment;

FIG. 4 is a partially enlarged schematic view of a portion B of FIG. 1;

fig. 5 is a partially enlarged schematic structural view of a portion C in fig. 1.

Description of reference numerals: 1. a roadbed layer; 11. a water collection cavity; 111. a primary water discharge chamber; 1111. a drain valve; 1112. a spring; 112. a water diversion cavity; 1121. a sand collecting groove; 12. a limiting strip; 13. a water supply pipe; 131. a water diversion pipe; 14. a sewer pipe; 141. an intercepting cylinder; 1411. a thin column; 1412. a water outlet hole; 15. a drainage ditch; 2. a barrier plate; 21. a baffle; 211. a U-shaped frame; 22. a floating ball; 3. a sand box; 31. a slide bar; 32. opening and closing a valve; 4. a green sheet water filtration mechanism; 41. a soil layer; 42. a fine sand layer; 43. a gravel layer; 5. a water storage mechanism; 51. a water storage area; 511. a water outlet pipe; 5111. a water pump; 52. a water-resistant film; 6. a purification box; 61. a sand accumulation chamber; 62. a coagulation chamber; 621. a filter screen; 63. an ultraviolet sterilization oxidation chamber; 631. an ultraviolet germicidal lamp; 632. an aeration disc; 64. an adsorption chamber; 641. a region increasing plate; 6411. a downstream port; 642. a silver-loaded activated carbon layer; 65. a first partition plate; 651. an overflow port; 66. a second partition plate; 661. a flow-through port; 67. a third partition plate; 671. an upstream port; 68. a U-shaped support; 69. a drain pipe; 691. a water collection pump; 7. a flocculating agent dosing device; 71. a net bag; 711. a propeller; 8. a water collection tank.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The utility model provides a sponge city rainwater collects purifies integrated system, refers to figure 1, includes road surface water collection mechanism, green belt drainage mechanism 4, retaining mechanism 5, purification mechanism and header tank 8. The rainwater of road surface water collection mechanism filters through green belt drainage mechanism 4, gets into the rainwater of collecting with green belt drainage mechanism 4 afterwards and impounds mechanism 5 and joins, and the rainwater in the mechanism 5 of impoundment purifies the back through clean system, collects in water header tank 8 for the afforestation water, road water, the fire water etc. in city.

Road surface water collection mechanism includes roadbed layer 1 and collection water cavity 11, and roadbed layer 1 has seted up escape canal 15 on the surface, and the downcomer 14 that is linked together with collection water cavity 11 top surface is seted up to the bottom of escape canal 15, collects water cavity 11 and separates through the barrier plate 2 of vertical setting and form initial water and abandon class chamber 111 and diversion chamber 112, and initial water is abandoned class chamber 111 and diversion chamber 112 level and is arranged the setting, and the bottom of barrier plate 2 and relative both sides wall all with the chamber wall reciprocal anchorage that collects water cavity 11.

Referring to fig. 1 and 2, a guide plate 21 is installed at the top of the blocking plate 2, the middle of the bottom surface of the guide plate 21 is rotatably connected with the top of the blocking plate 2, a floating ball 22 is fixed at the bottom of one end of the guide plate 21 close to the primary water drainage cavity 111, and a sand box 3 is connected to one end of the guide plate 21 close to the water drainage cavity 112. The upper surface of the sand sediment box 3 is provided with an opening, two opposite side walls of the sand sediment box 3 are abutted against the side walls of the water diversion cavity 112, and the bottom surface of one side of the guide plate 21 far away from the primary water flow abandoning cavity 111 is connected with one side edge of the top of the sand sediment box 3 in a rotating and sliding manner.

Vertical limiting strips 12 are fixed on two opposite side walls of the water diversion cavity 112, and vertical grooves which are connected with the corresponding limiting strips 12 in a sliding mode are formed in two opposite outer side walls of the sand caisson 3, so that a guiding effect is provided for the movement of the sand caisson 3.

The bottom surface of one side of the flow guide plate 21 close to the sand sediment box 3 is fixed with a U-shaped frame 211, the two ends of the U-shaped frame 211 are fixedly connected with the bottom surface of the flow guide plate 21, the distance between the U-shaped frame 211 and the bottom surface of the flow guide plate 21 forms a slide rail, and the length direction of the slide rail is parallel to the arrangement direction of the water diversion cavity 112 and the primary water drainage cavity 111. The side edge of the top of the sand sediment box 3 close to the guide plate 21 is fixedly provided with a cylindrical slide bar 31, and the slide bar 31 is connected with the guide rail in a sliding and rotating way.

A spring 1112 is fixed at the bottom of the caisson 3, the spring 1112 supports the caisson 3 to move upwards to a position abutting against the top surface of the water guide cavity 112, at this time, one end of the guide plate 21 far away from the water guide cavity 112 is arranged downwards and slantwise towards the primary water drainage cavity 111, and rainwater initially collected by the road base layer 1 enters the primary water drainage cavity 111 through the drainage ditch 15, the sewer pipe 14 and the guide plate 21 in sequence. The primary water discarding cavity 111 is used for collecting rainwater which washes air and the ground initially, when the water level of the rainwater collected by the primary water discarding cavity 111 rises to a certain position, the buoyancy of water drives the floating ball 22 to move upwards, so that the guide plate 21 compresses the spring 1112, the sand box 3 moves downwards, one side of the guide plate 21, which is far away from the primary water discarding cavity 111, is inclined downwards towards the water diversion cavity 112, and the rainwater is guided into the sand box 3.

One side of the water diversion cavity 112, which is far away from the primary water drainage cavity 111, is connected with a water supply pipe 13 for supplying water to the green belt water filtering mechanism 4, the water inlet end of the water supply pipe 13 is positioned on one side of the sand box 3, which is back to the guide plate 21, after rainwater of the guide plate 21 enters the sand box 3, sand and stones are settled at the bottom of the sand box 3, and the rainwater overflows into the water supply pipe 13 from the top of the sand box 3. The top of one side wall of silt basin 3, far away from guide plate 21, is inclined towards guide plate 21, and can separate silt inside silt basin 3, improve silt sedimentation efficiency.

Specifically, a sand collecting groove 1121 is formed in the bottom of the water diversion cavity 112 and located below the sand caisson 3, the opening and closing valve 32 is installed at the bottom of the sand caisson 3, and the sand collecting groove 1121 is used for collecting sediment settled inside the sand caisson 3. The initial water discarding cavity 111 is connected with a drain valve 1111 for draining rainwater accumulated inside the initial water discarding cavity 111.

Specifically, referring to fig. 1 and 4, an intercepting cylinder 141 is detachably clamped in the downcomer 14, the bottom of the intercepting cylinder is closed, a plurality of thin columns 1411 are fixed on the inner side wall of the intercepting cylinder 141, the thin columns 1411 are arranged in a staggered manner, a plurality of water outlet holes 1412 are fixed on the side wall of the intercepting cylinder 141, the side wall of the bottom of the intercepting cylinder 141 is inclined towards the central axis of the downcomer 14, and a gap is reserved between the side wall of the intercepting cylinder 141 and the inner wall of the downcomer 14. When rainwater on the surface of the roadbed layer 1 enters the intercepting cylinder 141, the thin columns 1411 can intercept impurities such as garbage, hair and branches mixed in the rainwater, and reduce the amount of the impurities entering the water collecting cavity 11.

Referring to fig. 1 and 3, the green belt water filtering mechanism 4 includes a soil layer 41, a fine sand layer 42 and a gravel layer 43 which are sequentially arranged from top to bottom, green landscape plants are planted on the soil layer 41, one end of the water delivery pipe 13, which is far away from the water collecting cavity 11, is connected with a plurality of water distribution pipes 131, the water distribution pipes 131 extend into the gravel layer 43, a plurality of water seepage holes are formed in the side wall of the water distribution pipes 131, and impurities are removed after rainwater of the soil layer 41 and the water distribution pipes 131 is filtered by the gravel layer 43.

The water storage mechanism 5 is positioned below the green belt water filtering mechanism 4, the water storage mechanism 5 comprises a water storage area 51 formed by splicing a plurality of water storage modules and a waterproof membrane 52 wrapping the side wall and the bottom of the water storage area 51, and the water storage area 51 is positioned below the gravel layer 43 and can store and store rainwater filtered by the gravel layer 43.

Referring to fig. 1 and 5, the purification mechanism includes a purification box 6, the interior of the purification box 6 is sequentially partitioned by a first partition plate 65, a second partition plate 66 and a third partition plate 67 along the flow direction of rainwater to form a sand accumulation chamber 61, a coagulation chamber 62, an ultraviolet sterilization oxidation chamber 63 and an adsorption chamber 64, the first partition plate 65 is located between the sand accumulation chamber 61 and the coagulation chamber 62, the second partition plate 66 is located between the coagulation chamber 62 and the ultraviolet sterilization chamber 63, and the third partition plate 67 is located between the ultraviolet sterilization oxidation chamber 63 and the adsorption chamber 64.

The water storage area 51 is connected with a water outlet pipe 511, one end of the water outlet pipe 511, which is far away from the water storage area 51, is connected with the bottom of the sand accumulation chamber 61, a water suction pump 5111 is installed on the water outlet pipe 511, and rainwater in the water storage area 51 enters the sand accumulation chamber 61 to settle sediment again. An overflow port 651 communicated with the sand accumulation chamber 61 and the coagulation chamber 62 is formed in the top of the first partition plate 65, and a flocculating agent dosing device 7 is detachably mounted at the position of the overflow port 651. The rainwater inside the sand accumulation chamber 61 can enter the coagulation chamber 62 through the overflow port 651, and the rainwater passes through the flocculant dosing device 7 and is mixed with the flocculant inside, and is flocculated and settled inside the coagulation chamber 62, so that suspended matters in rainfall water can be settled.

The bottom of second subregion board 66 is seted up the mouth 661 that overflows that communicates thoughtlessly room 62 and ultraviolet sterilization oxidation chamber 63 thoughtlessly congeals, and the inside rainwater of thoughtlessly congeal room 62 gets into the ultraviolet sterilization chamber through mouth 661, overflows mouth 661 demountable installation and has strong oxidant charge device, and the inside rainwater of thoughtlessly congealing room 62 is overflowing mouthful 661 position and the inside strong oxidant of strong oxidant charge device and is mixing, gets into ultraviolet sterilization oxidation chamber 63 and carries out oxidation reaction.

The filter screen 621 is installed at the bottom in the coagulation chamber 62, the bottom of the filter screen 621 is inclined away from the flow port 661, and the filter screen 621 is used for intercepting the impurities precipitated in the coagulation chamber 62, so as to prevent the impurities from entering the ultraviolet sterilization oxidation chamber 63 through the flow port 661.

The structure and the principle of the flocculant dosing device 7 and the strong oxidant dosing device in the purification box 6 can be the same or different, in this embodiment, the structure and the principle of the flocculant dosing device 7 and the strong oxidant dosing device in the purification box 6 are the same, in the following description, the same or similar structures included by the flocculant dosing device 7 and the strong oxidant dosing device in the purification box 6 are represented by the same name and reference number, and are specifically described by taking the flocculant dosing device 7 as an example:

flocculating agent charge device 7 includes columniform string bag 71, and the inside loading of string bag 71 has the flocculation medicine grain, and purifying box 6 is located overflow mouth 651 position and has seted up the viewing aperture, and the viewing aperture lid is equipped with opens and shuts the door, and roof and be close to overflow mouth 651 rigidity in the purifying box 6 have two U-shaped supporting member 68, and the cross-section of U-shaped supporting member 68 is L shape setting, and two U-shaped supporting member 68 provide respectively to the both sides of string bag 71 bear, limiting displacement.

One side of the net bag 71 close to the sand accumulation chamber 61 is fixed with a propeller 711, and the propeller 711 is impacted by rainwater when the rainwater passes through the position of the overflow port 651, so that the net bag 71 is driven to rotate, and the liquid medicine mixing efficiency can be improved.

The ultraviolet sterilizing lamp 631 is installed at the inner top of the ultraviolet sterilizing oxidation chamber 63, the ultraviolet sterilizing lamp 631 is used for killing microorganisms in rainwater, and meanwhile, the strong oxidant forms superoxide radicals in the rainwater under the ultraviolet light condition, and the superoxide radicals chemically degrade organic pollutants.

An aeration disc 632 is arranged at the inner bottom of the ultraviolet sterilization oxidation chamber 63, the aeration disc 632 is communicated with an air supply device, and a plurality of air outlet holes on the aeration disc 632 provide oxygen required by the oxidation reaction for the ultraviolet sterilization oxidation chamber 63.

The top of the third partition plate 67 is provided with an upstream port 671 communicating the ultraviolet sterilization oxidation chamber 63 and the adsorption chamber 64, the adsorption chamber 64 is partitioned by the partition plate 641 to form two chambers, the two chambers are horizontally arranged along the flowing direction of rainwater, and the bottom of the partition plate 641 is provided with a downstream port 6411 communicating the two chambers. The inside of cavity is fixed with a plurality of silver-carrying activated carbon layers 642 from last to arranging down, and the silver-carrying activated carbon layers 642 of two cavities are close to one side downward sloping setting each other, can increase with the area of contact of rainwater, and the rainwater can adsorb impurity such as peculiar smell, noxious substance when carrying silver activated carbon layer 642, has bactericidal effect simultaneously, has effectively avoided the activated carbon to breed the problem that the bacterium leads to aquatic nitrite to produce.

The top surface of the purification box 6 and the adsorption chamber 64 is connected with a drain pipe 69, one end of the drain pipe 69, which is far away from the purification box 6, is communicated with the water collection tank 8, the drain pipe 69 is provided with a water collection pump 691, and the purified rainwater in the purification box 6 is collected in the water collection tank 8.

The implementation principle of the application is as follows: the rainwater on 1 surface of road bed collects inside escape canal 15, drop inside collection water cavity 11 through escape canal 15 afterwards, the rainwater that drops inside collection water cavity 11 originally carries a large amount of impurity, abandon class chamber 111 through the leading-in first water of guide plate 21, when the water level that flows the chamber 111 inside of abandoning of first water rises to a take the altitude, the floater 22 come-up bears the upset of guide plate 21, the downward compression spring 1112 of sand setting case 3 this moment, guide plate 21 is inside the sand setting case 3 with the rainwater water conservancy diversion, silt can subside inside sand setting case 3, the rainwater is inside from the top overflow water supply pipe 13 of sand setting case 3. Inside rainwater of flow pipe 13 permeates to retaining mechanism 5 inside after gravel layer 43 filters, and the inside rainwater of retaining mechanism 5 purifies the back through purifying box 6, collects inside header tank 8, and the impurity of rainwater reduces by a wide margin, can improve the scope that rainwater was recycled.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a sponge city rainwater is collected and is purified integrated system which characterized in that: the rainwater purification device comprises a road surface water collecting mechanism, a green belt water filtering mechanism (4), a water storage mechanism (5), a purification mechanism and a water collecting tank (8), which are sequentially arranged along the flowing direction of rainwater, wherein the green belt water filtering mechanism (4) is used for primarily filtering the rainwater of the road surface water collecting mechanism, the water storage mechanism (5) is positioned below the green belt water filtering mechanism (4), the water storage mechanism (5) is used for storing the rainwater in the green belt water filtering mechanism (4), and the purification mechanism is used for purifying the rainwater in the water storage mechanism (5);

the water purification mechanism comprises a purification box (6), a sand accumulation chamber (61), a coagulation chamber (62), an ultraviolet sterilization oxidation chamber (63) and an adsorption chamber (64) are sequentially arranged in the purification box (6) along the rainwater flowing direction, a first partition plate (65) is arranged between the sand accumulation chamber (61) and the coagulation chamber (62), an overflow port (651) is formed in the first partition plate (65), a flocculating agent dosing device (7) is arranged at the overflow port (651), a drain pipe (69) is communicated with the side wall of the purification box (6) and located in the adsorption chamber (64), and one end, far away from the purification box (6), of the drain pipe (69) is connected with a water collection box (8);

the pavement water collecting mechanism comprises a road base layer (1) and a water collecting cavity (11) positioned in the road base layer (1), a drainage ditch (15) communicated with the top surface of the water collecting cavity (11) is formed in the surface of the road base layer (1), and the water collecting cavity (11) is connected with a water supply pipe (13) for supplying water to the green belt water filtering mechanism (4);

catchment chamber (11) and separate through baffler (2) and form just water and abandon class chamber (111) and diversion chamber (112), the top of baffler (2) is rotated and is provided with just water and abandons class chamber (111) or diversion chamber (112) guide plate (21) of carrying out the water guide, one side that guide plate (21) are close to just water and abandon class chamber (111) is provided with floater (22), one side rotation and sliding connection that guide plate (21) are close to diversion chamber (112) have sand setting tank (3), vertical sliding connection about sand setting tank (3) and diversion chamber (112), the bottom of diversion chamber (112) is provided with spring (1112) that support sand setting tank (3) rebound to the top butt with diversion chamber (112), water pipe (13) are located one side of sand setting tank (3) guide plate (21) dorsad.

2. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 1, is characterized in that: the coagulating chamber (62) and the ultraviolet sterilization oxidation chamber (63) are provided with a second partition plate (66), the second partition plate (66) is provided with an overflowing port (661), the overflowing port (661) is provided with a strong oxidant dosing device, and the ultraviolet sterilization oxidation chamber (63) is provided with an ultraviolet sterilization lamp (631).

3. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 2, is characterized in that: flocculating agent charge device (7) and strong oxidant charge device all set up string bag (71) into the cylinder form, string bag (71) rotate set up in the inner wall of purifying box (6), one side that string bag (71) are towards the rainwater flow direction is provided with screw (711).

4. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 3, is characterized in that: be provided with third subregion board (67) between ultraviolet sterilization oxidation chamber (63) and adsorption chamber (64), upward flow mouth (671) have been seted up to third subregion board (67), be provided with in adsorption chamber (64) and separate into area increasing board (641) of two cavities with adsorption chamber (64), it mouthful (6411) down to have seted up in area increasing board (641), from the top down has set gradually a plurality of year silver activated carbon layer (642) in the cavity.

5. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 1, is characterized in that: the green belt water filtering mechanism (4) comprises a soil layer (41), a fine sand layer (42) and a gravel layer (43) which are sequentially arranged from top to bottom, plants are planted on the soil layer (41), and one end, far away from the water collecting cavity (11), of the water delivery pipe (13) extends into the gravel layer (43).

6. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 5, is characterized in that: one end of the water delivery pipe (13) far away from the water collecting cavity (11) is connected with a plurality of water distribution pipes (131), the water distribution pipes (131) are laid on the gravel layer (43), and a plurality of water seepage holes are formed in the water distribution pipes (131).

7. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 1, is characterized in that: the water storage mechanism (5) comprises a water storage area (51) formed by splicing a plurality of water storage modules and a waterproof film (52) wrapped on the side wall and the bottom of the water storage area (51).

8. The comprehensive system for collecting and purifying rainwater in the sponge city according to claim 1, is characterized in that: the bottom surface of the drainage ditch (15) is communicated with the water collecting cavity (11) through a vertically arranged sewer pipe (14), an intercepting cylinder (141) is detachably arranged in the sewer pipe (14), one end, close to the water collecting cavity (11), of the intercepting cylinder (141) is in a closed arrangement, an interval is reserved between the outer side wall, close to the bottom, of the intercepting cylinder (141) and the sewer pipe (14), a plurality of water outlet holes (1411) are formed in the side wall of the intercepting cylinder (141), and a plurality of thin columns (1411) which are arranged in a staggered manner are arranged on the inner side wall of the intercepting cylinder (141).