CN112551820A - Urban rainwater reposition of redundant personnel, clean system - Google Patents
Urban rainwater reposition of redundant personnel, clean system Download PDFInfo
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- CN112551820A CN112551820A CN202011508568.6A CN202011508568A CN112551820A CN 112551820 A CN112551820 A CN 112551820A CN 202011508568 A CN202011508568 A CN 202011508568A CN 112551820 A CN112551820 A CN 112551820A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 186
- 238000006243 chemical reaction Methods 0.000 claims abstract description 97
- 230000005484 gravity Effects 0.000 claims abstract description 39
- 238000000746 purification Methods 0.000 claims abstract description 16
- 239000002689 soil Substances 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 71
- 239000010865 sewage Substances 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 230000007306 turnover Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
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- 239000011148 porous material Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 15
- 238000010517 secondary reaction Methods 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 5
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- 238000006731 degradation reaction Methods 0.000 abstract description 4
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- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
-
- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an urban rainwater flow dividing and purifying system, which belongs to the technical field of rainwater recovery and comprises a flow dividing tank, a gravity vertical flow artificial wetland and a water storage tank, wherein the flow dividing tank is connected with the water storage tank through a first connecting pipe, the flow dividing tank is connected with the gravity vertical flow artificial wetland through a blow-off pipe, the gravity vertical flow artificial wetland comprises a primary reaction tank, a secondary reaction tank and a tertiary reaction tank which are arranged in a ladder-shaped structure, a matrix is filled in each reaction tank, a soil layer positioned above the matrix is filled in each reaction tank, a first plant is planted on each soil layer, and a water distribution tank is arranged at the left end of the primary reaction tank. The composite wetland has the advantages of small floor area, strong impact load resistance, long hydraulic retention time and better removal capability for organic matters, and realizes multiple functions of composite alternate adsorption, degradation and urban rainwater purification of aquatic habitat and dry habitat to the maximum extent.
Description
Technical Field
The invention relates to the technical field of rainwater recovery, in particular to an urban rainwater flow dividing and purifying system.
Background
Urban construction creates a large number of impervious floors, roofs, concrete and asphalt pavements, and the runoff coefficient of such pavements is typically 0.9, meaning that nearly 90% of rainfall will contribute to loss of surface runoff. The urban rainwater resource is in short supply on one hand, but urban problems such as urban waterlogging and runoff pollution on the other hand are presented, and the urban rainwater resource can be treated, collected and utilized as a rich fresh water resource.
The existing purification device for rainwater treatment only purifies passing rainwater through a single wetland, and the problems can occur in the application process of the single wetland for rainwater purification treatment due to the poor organic matter removing capability of the existing vertical flow artificial wetland, the large occupied area of the surface flow artificial wetland, the small hydraulic load rate and the limited dirt removing capability.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide an urban rainwater shunting and purifying system to solve the problems in the background technology.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
a city rainwater diversion and purification system comprises a diversion pool, a gravity vertical flow constructed wetland and a water storage pool, wherein the diversion pool is connected with the water storage pool through a first connecting pipe and is connected with the gravity vertical flow constructed wetland through a blow-off pipe, the gravity vertical flow constructed wetland comprises a first-level reaction pool, a second-level reaction pool and a third-level reaction pool which are arranged in a ladder-shaped structure, matrix is filled in each reaction pool, a soil layer above the matrix is filled in each reaction pool, a first plant is planted on each soil layer, a water distribution pool is arranged at the left end of each first-level reaction pool, a water inlet communicated with the inside of each first-level reaction pool is formed in the bottom of the side wall of the right end of each water distribution pool, every two adjacent reaction pools are communicated, a water collection pool is arranged at the right end of each third-level reaction pool and is communicated with the third-level reaction pools, the right end of the water collecting pool is provided with a multi-stage turning-flow type artificial surface flow wetland, the rightmost end of the multi-stage turning-flow type artificial surface flow wetland is connected with a water storage pool through a flow conveying pipe, and the water storage pool is communicated with a primary reaction pool through a return pipe;
the utility model discloses a multistage flow-reversing artificial surface flow wetland, including the strip recess that is the continuity setting and the protruding piece of bar, each the protruding piece of bar all constitutes the smooth W type structure in surface rather than between the adjacent bar recess in both sides, the bar recess of multistage flow-reversing artificial surface flow wetland at the leftmost end passes through the water conservancy diversion slope body and is connected with the catchment pond, and the left end height of water conservancy diversion slope body is slightly less than the height of delivery port, every the inside of bar recess all is equipped with the filling layer, and plants two, every all have been planted among every filling layer on every the protruding piece of bar all offer the intercommunicating pore that is used for communicateing two adjacent bar recesses on the protruding piece of bar, every plant three is all planted on the top of the protruding piece of bar.
Preferably, the inside in one-level reaction tank, second grade reaction tank all is equipped with the catchment pipe of carrying the inside rivers of reaction tank to rather than the adjacent reaction tank bottom, the catchment pipe includes that the level locates one-level reaction tank, second grade reaction tank inside top and is located the inboard collector pipe one of matrix, is connected and vertical downwardly extending's raceway with a collector pipe right-hand member, is connected perpendicularly and is located the drain pipe of second grade reaction tank, tertiary reaction tank bottom with the raceway bottom, the inside top in tertiary reaction tank is equipped with the collector pipe two that is located the matrix inboard, impartial interval is seted up in water inlet hole, every on collector pipe one, the collector pipe two, all install the arc filter screen that protects water inlet hole's port department on the collector pipe, the catchment tank passes through collector pipe two and tertiary reaction tank intercommunication.
Preferably, the right ends of the first water collecting pipe and the second water collecting pipe all penetrate through the side wall of the corresponding reaction tank and extend to the inside of the adjacent reaction tank, a through hole for the water collecting pipe to horizontally penetrate is formed in the side wall of the reaction tank, and a sealing ring sleeved on the water collecting pipe is arranged inside the through hole.
Preferably, the floating valve includes that the connecting plate, the slip that are fixed on locating the pond inner wall of gathering are located on the connecting plate and are the bracing piece of rectangle column structure, fixed locating the bracing piece bottom and carry out sealed floating seal piece to the delivery port, set up on the connecting plate and supply the bracing piece gliding spacing groove from top to bottom, and install gyro wheel two on the inner wall of spacing groove, the top of bracing piece is equipped with the spacing layer board that is located on the connecting plate.
Preferably, a second connecting pipe is laid in the second communicating hole, the length of the second connecting pipe is slightly smaller than that of the second communicating hole, the two ends of the second connecting pipe are connected with semicircular filter covers through screws, and gravels for filtering and protecting the two ends of the second connecting pipe are filled in the two ends of the second communicating hole.
Preferably, the strip-shaped groove at the rightmost end of the multistage turnover-flow type artificial surface flow wetland is connected with a water storage tank through a flow conveying pipe, and the water storage tank is communicated with the first-stage reaction tank through a return pipe.
Preferably, the inner bottom of the diversion pool is provided with a drain outlet, a drain pipe for discharging high-density rainwater to the purification device is arranged on the drain outlet, a drain outlet positioned below the pipeline is arranged on the right side wall of the diversion pool, the water outlet is connected with the water storage tank through a first connecting pipe, a sealing mechanism for automatically sealing the sewage discharge outlet is arranged in the flow dividing tank, the sealing mechanism comprises a sealing ball, a connecting block which is formed and arranged at the bottom end of the sealing ball, and a sealing plug which is formed and arranged at the bottom end of the connecting block and is inserted into the inner side of the sewage draining outlet, the density of the sealing ball, the density of the connecting block and the density of the sealing plug are all equal to the density of clean rainwater, and when the density of the rainwater in the diversion pool is at the density of clean rainwater or lower than the density of the clean rainwater, the sealing plug is tightly clamped at the inner side of the sewage draining exit, when the density of rainwater in the diversion pool is higher than that of clean rainwater, the sealing plug can move upwards under the action of buoyancy;
the top end of the sealing ball is connected with an adjusting block with the size larger than that of the water outlet and a sealing gasket which is stuck to the right end face of the adjusting block and is used for sealing the water outlet through an L-shaped connecting rod, a limiting mechanism for limiting the adjusting block and the sealing ball during up-and-down movement is arranged in the flow dividing tank, the limiting mechanism comprises a limiting rod which is arranged at the top in the shunting pool and vertically extends downwards, a sliding groove which is arranged on the regulating block and through which the limiting rod vertically passes, and a limiting supporting block which is fixedly arranged at the bottom end of the limiting rod and has a size larger than that of the sliding groove, the limiting supporting block is positioned below the regulating block, when the rainwater in the diversion tank is at low density, the bottom end of the adjusting block is contacted with the limiting support block, the inner side of the chute is provided with a roller I which is vertically arranged and is at least two rows, and at least one roller is arranged on each row of rollers, and a slide way for each row of rollers to slide up and down is arranged on the limiting rod.
Preferably, the left side in reposition of redundant personnel pond is equipped with the gravity settling basin, and the reposition of redundant personnel pond passes through pipeline and gravity settling basin intercommunication, the left end of pipeline is equipped with and is located the decurrent end of buckling of gravity settling basin inboard and opening, and the opening part of buckling the end is equipped with filter screen one.
Preferably, the water outlet comprises a channel, an expansion port and a second filter screen, the channel is arranged on the side wall of the right end of the flow dividing pool, the expansion port is arranged at the left port of the channel, and the second filter screen is mounted on the inner side of the expansion port and used for filtering water flow entering the inner side of the channel.
Preferably, one end of the first connecting pipe connected with the water outlet is provided with a communicating pipe in an L-shaped structure, and the vertical part of the communicating pipe is vertically arranged upwards.
Preferably, the diameter of the sewage draining exit is larger than that of the pipeline.
3. Advantageous effects
1. Compared with the existing horizontal flow wetland, the multistage turning-over type artificial surface flow wetland of the invention has a smooth W-shaped structure, the structure of the invention ensures that the horizontal flow wetland and the multistage turning-over type artificial surface flow wetland occupy the same area, the water passing surface area can be increased, so that the rainwater purification effect of the wetland is improved, in addition, the smooth W-shaped structure has a certain gradient, so that the flowing speed of rainwater in the wetland can be reduced, the retention time of water power in the wetland is prolonged, and the sedimentation of suspended solids and the growth of plants are further facilitated, in addition, the composite of the gravity vertical flow wetland and the multistage turning-over type artificial surface flow wetland in the design application ensures that the composite wetland has small occupation area, strong impact load resistance and good removal capability for organic matters, can treat rainwater with different water qualities, and avoids the defect that the existing vertical flow artificial wetland has poor removal capability for organic matters, and the defects of large occupied area, small hydraulic load rate and limited dirt-removing power of the surface flow artificial wetland.
2. When the rainwater is increased, the gravity vertical flow water level is raised, the strip-shaped grooves in the downstream multistage turnover type artificial surface flow wetland are full of water and overflow, the overflowing water flows through the strip-shaped convex blocks and irrigates the plants on the strip-shaped convex blocks, so that the water flow is fully utilized, in addition, the arrangement of planting of multiple plants is carried out on the gravity vertical flow wetland and the multistage turnover type artificial surface flow wetland, so that the composite wetland can fully utilize the alternate and combined functions of adsorption, degradation and the like of aquatic plants, xerophyte, surface soil and soil aerobic organisms, and the composite wetland can furthest realize the multiple functions of alternate adsorption, degradation and urban rainwater purification of aquatic and xerophyte environments.
According to the invention, the density of the sealing ball, the connecting block and the sealing plug is equal to that of clean rainwater, so that the sealing plug can automatically move up and down under the action of the buoyancy or gravity of the sealing ball and the buoyancy or gravity of the connecting block, and the drain outlet can be closed while the drain outlet is automatically opened or can be opened while the drain outlet is automatically closed through the linkage between the sealing ball and the adjusting block.
Drawings
FIG. 1 is a schematic front view of the internal structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the composite wetland;
FIG. 3 is a schematic view of the internal structure of the header pipe;
FIG. 4 is a schematic view of a connection structure of a water collecting pipe and an arc-shaped filter screen;
FIG. 5 is a schematic diagram of a floating valve;
FIG. 6 is a schematic view of a local internal structure of a reverse-flow constructed surface wetland;
FIG. 7 is a schematic view of a connection structure of a diversion tank and a gravity settling tank;
FIG. 8 is a schematic structural view of the connection between the adjusting block and the limiting rod;
FIG. 9 is a schematic view of a connection structure of a sealing mechanism and a sewage draining exit;
fig. 10 is an enlarged schematic view of a portion a in fig. 1.
Reference numerals: 1. a gravity settling tank; 2. a diversion pool; 3. a pipeline; 4. bending the end; 401. a first filter screen; 5. a sewage draining outlet; 6. a sealing mechanism; 61. a sealing ball; 62. connecting blocks; 63. a sealing plug; 7. a water outlet; 71. a channel; 72. expanding the mouth; 721. a second filter screen; 8. a first connecting pipe; 9. a connecting rod; 10. an adjusting block; 11. a gasket; 12. a limiting rod; 13. a chute; 14. a first roller; 15. a slideway; 16. a limiting support block; 17. a blow-off pipe; 18. a communicating pipe; 19. a return pipe; 20. a water storage tank; 21. a first-stage reaction tank; 22. a secondary reaction tank; 23. a third-stage reaction tank; 24. a substrate; 25. a soil layer; 26. a first plant; 27. a water distribution pool; 28. a water collecting pipe; 281. a first water collecting pipe; 284. a water inlet; 285. an arc-shaped filter screen; 282. a water delivery pipe; 283. a water discharge pipe; 29. a second water collecting pipe; 30. a water collecting pool; 31. a water outlet; 32. a floating valve; 321. a connecting plate; 322. a support bar; 323. a floating seal block; 324. a limiting groove; 325. a second roller; 326. a limiting supporting plate; 33. a water inlet; 34. a diversion slope body; 35. a strip-shaped groove; 36. a strip-shaped convex block; 37. a filling layer; 38. a second plant; 39. thirdly, planting; 40. a communicating hole; 41. a second connecting pipe; 42. a semicircular filter cover; 43. gravel; 44. a water storage tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1-10, an urban rainwater diversion and purification system comprises a diversion pool 2, a first connecting pipe 8, a blow-off pipe 17, a gravity vertical flow artificial wetland and a water storage pool 20, wherein the diversion pool 2 is connected with the water storage pool 20 through the first connecting pipe 8, the diversion pool 2 is in artificial wet connection with the gravity vertical flow through the blow-off pipe 17, a gravity settling pool 1 is arranged on the left side of the diversion pool 2, the diversion pool 2 is communicated with the gravity settling pool 1 through a pipeline 3, a bent end 4 with a downward opening is arranged at the left end of the pipeline 3 and positioned on the inner side of the gravity settling pool 1, and a first filter screen 401 is arranged at the opening of the bent end 4;
the inner bottom of the diversion pool 2 is provided with a drain outlet 5, the drain outlet 5 is provided with a drain pipe 17 for discharging high-density rainwater to a purification device, the diameter of the drain outlet 5 is larger than that of the pipeline 3, so that the flow of the water discharged from the drain outlet 5 is larger than that of the water entering the diversion pool 2 from the gravity settling pool 1, so as to improve the sewage discharge effect of the diversion pool 2, a drain outlet 7 positioned below the pipeline 3 is arranged on the right side wall of the diversion pool 2, the drain outlet 7 is connected with the water storage pool 20 through a first connecting pipe 8, one end of the first connecting pipe 8 connected with the drain outlet 7 is provided with a communication pipe 18 in an L-shaped structure, the vertical part of the communication pipe 18 is vertically and upwards arranged, the drain outlet 7 comprises a channel 71 arranged on the right side wall of the diversion pool 2, an expansion port 72 arranged on the left side port of the channel 71, and a second filter screen 721 arranged, a sealing mechanism 6 for automatically sealing the sewage draining outlet 5 is arranged in the diversion pool 2, the sealing mechanism 6 comprises a sealing ball 61, a connecting block 62 formed at the bottom end of the sealing ball 61, and a sealing plug 63 formed at the bottom end of the connecting block 62 and inserted into the inner side of the sewage draining outlet 5, the densities of the sealing ball 61, the connecting block 62 and the sealing plug 63 are all equal to the density of clean rainwater, the sealing plug 63 is tightly clamped at the inner side of the sewage draining outlet 5 when the density of rainwater in the diversion pool 2 is at or lower than the density of the clean rainwater, and the sealing plug 63 moves upwards under the action of buoyancy when the density of rainwater in the diversion pool 2 is higher than the density of the clean rainwater;
the top end of the sealing ball 61 is connected with an adjusting block 10 with the size larger than that of the water outlet 7 through an L-shaped connecting rod 9, a sealing gasket 11 which is adhered to the right side end face of the adjusting block 10 and is used for sealing the water outlet 7, a limiting mechanism for limiting the adjusting block 10 and the sealing ball 61 during up-and-down movement is arranged in the diversion pool 2, the limiting mechanism comprises a limiting rod 12 which is arranged at the top in the diversion pool 2 and vertically extends downwards, a sliding groove 13 which is arranged on the adjusting block 10 and is used for the limiting rod 12 to vertically pass through, a limiting support block 16 which is fixedly arranged at the bottom end of the limiting rod 12 and has the size larger than that of the sliding groove 13, the limiting support block 16 is positioned below the adjusting block 10, the bottom end of the adjusting block 10 is contacted with the limiting support block 16 when rainwater in the diversion pool 2 is at low density, the inner side of the sliding groove 13 is provided with a vertically arranged roller 14 which is at least, the limiting rod 12 is provided with a slide way 15 for each row of rollers 14 to slide up and down;
the gravity vertical flow constructed wetland comprises a first-stage reaction tank 21, a second-stage reaction tank 22 and a third-stage reaction tank 23 which are arranged in a step-shaped structure, a matrix 24 is filled in each reaction tank, a soil layer 25 above the matrix 24 is filled in each reaction tank, a first plant 26 is planted on each soil layer 25, a water distribution tank 27 is arranged at the left end of each first-stage reaction tank 21, a water inlet 33 communicated with the inside of each first-stage reaction tank 21 is formed in the bottom of the side wall of the right end of the water distribution tank 27, every two adjacent reaction tanks are communicated, a water collection pipe 28 for conveying water in each reaction tank to the bottom of the corresponding adjacent reaction tank is arranged in each first-stage reaction tank 21 and each second-stage reaction tank 22, each water collection pipe 28 comprises a water collection pipe 281, a water conveying pipe 282, a water conveying pipe, a, A water discharge pipe 283 which is vertically connected with the bottom end of the water delivery pipe 282 and is positioned at the bottom in the second-stage reaction tank 22 and the third-stage reaction tank 23, a water collecting pipe II 29 which is positioned at the inner side of the substrate 24 is arranged above the inner part of the third-stage reaction tank 23, a water collecting pipe 281 and a water collecting pipe II 29 are arranged on the water inlet through holes 284 at equal intervals, an arc-shaped filter screen 285 which protects the port part of the water inlet through hole 284 is arranged on each water collecting pipe, the water collecting tank 30 is communicated with the third-stage reaction tank 23 through the water collecting pipe II 29, rainwater gathered in the water distribution tank 27 enters the inner bottom of the first-stage reaction tank 21 through the water inlet 33, the water level in the first-stage reaction tank 21 is continuously increased through continuous accumulation of the rainwater in the first-stage reaction tank 21, namely the rainwater continuously moves upwards from the inner bottom of the first-stage reaction tank 21, the rainwater is purified through, the rainwater can flow into the first water collecting pipe 281 in the first-stage reaction tank 21 through the water inlet through hole 284, and is conveyed to the inside of the second-stage reaction tank 22 through the water conveying pipe 282, and is released from the water discharging pipe 283 positioned at the inner bottom of the second-stage reaction tank 22, so that the primarily purified rainwater can be purified again through the second-stage reaction tank 22, the rainwater after secondary filtration is conveyed to the inner bottom of the third-stage reaction tank 23 by repeating the steps, and is purified again, the rainwater is purified in multiple stages, the purifying effect of the gravity vertical flow wetland on the rainwater is effectively improved, the right ends of the first water collecting pipe 281 and the second water collecting pipe 29 penetrate through the side wall of the corresponding reaction tank and extend to the inside of the adjacent reaction tank, the side wall of the reaction tank is provided with a through hole for the horizontal penetration of the water collecting pipe, and the inside of the through hole is provided with a sealing ring sleeved on the water collecting pipe, the joint between the water collecting pipe and the reaction tanks can be sealed through the sealing ring, so that the sealing effect between every two adjacent reaction tanks is ensured;
a water collecting tank 30 is arranged at the right end of the third-stage reaction tank 23, and the water collecting tank 30 is communicated with the third-stage reaction tank 23;
the right end of the water collecting pool 30 is provided with a multi-stage turnover type artificial surface flow wetland, the water collecting pool 30 is provided with a water outlet 31 for conveying the water flow in the water collecting pool to the multi-stage turnover type artificial surface flow wetland, the water outlet 31 is provided with a floating valve 32, the floating valve 32 comprises a connecting plate 321 fixedly arranged on the inner wall of the water collecting pool 30, a supporting rod 322 which is slidably arranged on the connecting plate 321 and is of a rectangular structure, a floating sealing block 323 fixedly arranged at the bottom end of the supporting rod 322 and seals the water outlet 31, the connecting plate 321 is provided with a limiting groove 324 for the supporting rod 322 to slide up and down, the inner wall of the limiting groove 324 is provided with a roller II 325, the top end of the supporting rod 322 is provided with a limiting supporting plate 326 positioned on the connecting plate 321, when the water level in the water collecting pool 30 rises, the floating sealing block 323 can be lifted up under the action of the water flow buoyancy and leave, the arrangement of automatically opening and closing the water outlet 31 by the buoyancy effect of the water flow effectively improves the flexibility of the composite wetland, when the supporting rod 322 is driven by the floating seal block 323 to move up and down on the connecting plate 321, the friction force between the supporting rod 322 and the connecting plate 321 can be reduced by the rolling of the second roller 325, so that the supporting rod 322 can smoothly slide up and down on the connecting plate 321,
the multistage turning-over type artificial surface flow wetland comprises strip-shaped grooves 35 and strip-shaped convex blocks 36 which are continuously arranged, wherein a W-shaped structure with a smooth surface is formed between each strip-shaped convex block 36 and the adjacent strip-shaped grooves 35 on the two sides of each strip-shaped convex block, the strip-shaped groove 35 at the leftmost end of the multistage turning-over type artificial surface flow wetland is connected with a water collecting tank 30 through a flow guide slope body 34, the left end of the flow guide slope body 34 is slightly lower than the height of a water outlet 31, a filling layer 37 is arranged inside each strip-shaped groove 35, a plant II 38 is planted on each filling layer 37, a communicating hole 40 used for communicating the two adjacent strip-shaped grooves 35 is arranged on each strip-shaped convex block 36, a plant III 39 is planted at the top end of each strip-shaped convex block 36, a connecting pipe II 41 is laid inside the communicating hole 40, the length of the connecting pipe II 41 is slightly smaller than that of the communicating hole 40, and semicircular filter hoods 42 are, gravels 43 for filtering and protecting two end parts of the second connecting pipe 41 are filled in the two ends of the communicating hole 40, the gravels 43 in the two ends of the communicating hole 40 are arranged, so that the gravel can protect the two ends of the second connecting pipe 41, the filling layer 37 in the strip-shaped groove 35 in the multistage counter-current artificial surface flow wetland is prevented from entering the inside of the second connecting pipe 41, the second connecting pipe 41 is blocked, and meanwhile, the second connecting pipe 41 can be filtered and protected again through the semicircular filtering cover 42, so that the connectivity between every two adjacent strip-shaped grooves 35 is ensured;
the strip-shaped groove 35 at the rightmost end of the multi-stage turning-flow type artificial surface flow wetland is connected with the water storage tank 20 through a flow conveying pipe, the water storage tank 20 is communicated with the first-stage reaction tank 21 through a return pipe 19, and when the water level in the composite wetland is not high, in order to ensure the growth and development of plants in the composite wetland, the water flow in the water storage tank 20 can be conveyed to the inside of the water distribution tank 27 through the return pipe 19 through the pump body, so that the water level of the composite wetland can be maintained at a certain horizontal height.
The specific application process of the urban rainwater shunting and purifying system is as follows: when the rainwater treatment device is used, firstly, rainwater subjected to bottom precipitation treatment at the inner side of the gravity settling tank 1 is conveyed to the interior of the diversion tank 2 through the pipeline 3, and when the rainwater subjected to bottom precipitation is conveyed, the bending end 4 can extend into the interior of the rainwater at the inner side of the gravity settling tank 1 through the shape of the bending end 4 and the downward arrangement of the upper opening of the bending end, so that suspended matters in the rainwater in the gravity settling tank 1 can be effectively prevented from entering the interior of the diversion tank 2, and the rainwater treatment effect of the gravity settling tank 1 is improved;
when the density of rainwater in the diversion pool 2 is equal to or lower than that of clean rainwater, the sealing ball 61, the connecting block 62 and the sealing plug 63 tightly clamp the sealing plug 63 on the inner side of the sewage draining exit 5 under the action of self gravity, so as to close the sewage draining exit 5, meanwhile, through the connection between the adjusting block 10 and the sealing ball 61, when the sealing plug 63 is inserted on the inner side of the sewage draining exit 5, the adjusting block 10 moves downwards on the limiting rod 12 and is tightly attached to the top end surface of the limiting support block 16, and when the adjusting block 10 moves downwards, the water outlet 7 is exposed, so as to provide a powerful condition for discharging clean rainwater in the diversion pool 2, along with the continuous accumulation of clean rainwater in the diversion pool 2, when the water level of the clean rainwater reaches the water outlet 7, the water outlet 7 transmits the clean rainwater to the inner part of the first connecting pipe 8, finally flows into the water storage tank 20, so that the rainwater can be recycled, when clean rainwater passes through the water outlet 7, the rainwater to be discharged can be filtered through the filter screen II 721, and meanwhile, the clean rainwater entering the diversion tank 2 can enter the connecting pipe I8 only when the water level of the clean rainwater reaches the top end of the vertical end of the connecting pipe I8 through the L-shaped structure of the communicating pipe 18 and the vertical part on the communicating pipe upwards, so that suspended matters on the upper surface of the clean rainwater can be effectively prevented from entering the connecting pipe I8, and the diversion effect of the diversion tank 2 on the rainwater is improved;
on the contrary, when the density of rainwater in the diversion tank 2 is higher than that of clean rainwater, the sealing ball 61 is under the buoyancy action of high-density rainwater and drives the sealing plug 63 to move upwards, the drain outlet 5 is opened at the moment, the high-density rainwater is discharged from the drain outlet 5 and enters the drain pipe 17, and finally the high-density rainwater is transmitted to the inside of the purification device through the drain pipe 17, so that the high-density rainwater is treated, the rainwater is favorably recycled, and when the sealing plug 63 moves upwards under the driving of the sealing ball 61, the adjusting block 10 is driven by the sealing ball 61 to move upwards on the limiting rod 12 and seal one side of the water outlet 7, so that the high-density rainwater is prevented from entering the water storage tank 20 and affecting the rainwater recycling effect;
rainwater discharged from the sewage discharge pipe 17 enters the inside of the water distribution tank 27, rainwater gathered inside the water distribution tank 27 enters the inner bottom of the primary reaction tank 21 through the water inlet 33, the rainwater is continuously accumulated inside the primary reaction tank 21, so that the water level inside the primary reaction tank 21 is continuously increased, namely the rainwater continuously moves upwards from the inner bottom of the primary reaction tank 21, the rainwater is purified through the matrix 24 in the process, when the whole primary reaction tank 21 is filled with the rainwater, the rainwater passes through the water inlet through hole 284 to flow into the water collecting pipe 281 in the primary reaction tank 21, is conveyed to the inside of the secondary reaction tank 22 through the water conveying pipe 282 and is released from the water drain pipe 283 at the inner bottom of the secondary reaction tank 22, so that the purified rainwater can be purified again through the secondary reaction tank 22, and the rainwater subjected to secondary filtration is conveyed to the inner bottom of the tertiary reaction tank 23 by repeating the steps, the rainwater is purified again, and when flowing in the gravity vertical flow artificial wetland, plants planted in reaction tanks of different levels can be nourished, so that the rainwater can be fully utilized, and the rainwater purification effect of the gravity vertical flow artificial wetland can be improved through the adsorption of the plants on substances in the rainwater;
when the rainwater is increased, the gravity vertical flow water level is raised, the water level in the water collecting pool 30 is also raised at the same time, the floating sealing block 323 can be lifted and separated from the water outlet 31 under the action of the water flow buoyancy, the water flow in the water collecting pool 30 above the water outlet 31 can flow out through the water outlet 31 and flow into the downstream multistage turning-over type artificial surface flow wetland, when the rainwater flowing into the multistage turning-over type artificial surface flow wetland is not much, the water flow can be dispersed into each strip-shaped groove 35 through the communication between every two adjacent strip-shaped grooves 35, and when the rainwater flowing into the multistage turning-over type artificial surface flow wetland is much, the strip-shaped grooves 35 in the downstream multistage turning-over type artificial surface flow wetland are in a full water state and overflow, and the overflowed water flows through the strip-shaped raised blocks 36 and irrigates the three strips 39 on the strip-shaped raised blocks 36, so as to fully utilize the water flow, in addition, the gravity vertical flow wetland and the multistage turnover type artificial surface flow wetland are provided with a plurality of plants for planting, so that the composite wetland can fully utilize the alternate and compound functions of adsorption, degradation and the like of aquatic plants, xerophyte, surface soil and soil aerobe to improve the purification effect of the wetland on rainwater, and finally purified water flows into the water storage tank 24 for storage through a pipeline;
when the water level in the composite wetland is not high, in order to ensure the growth and development of plants in the composite wetland, the water flow in the water storage tank 20 can be conveyed to the inside of the water distribution tank 27 through the pump body through the return pipe 19, so that the water level of the composite wetland can be maintained at a certain horizontal height, and the use process of the urban rainwater diversion and purification system is completed.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A city rainwater shunting and purifying system comprises a shunting pool (2), a gravity vertical flow artificial wetland and a water storage pool (20), wherein the shunting pool (2) is connected with the water storage pool (20) through a first connecting pipe (8), the shunting pool (2) is connected with the gravity vertical flow artificial wetland through a drain pipe (17), the gravity vertical flow artificial wetland comprises a first-level reaction pool (21), a second-level reaction pool (22) and a third-level reaction pool (23) which are arranged in a ladder-shaped structure, a matrix (24) is filled in each reaction pool, a soil layer (25) positioned above the matrix (24) is filled in each reaction pool, a first plant (26) is planted on each soil layer (25), the urban rainwater shunting and purifying system is characterized in that a water distribution pool (27) is arranged at the left end of the first-level reaction pool (21), and a water inlet (33) communicated with the inside of the first-level reaction pool (21) is arranged at the bottom of the right end side wall of the water distribution pool (27), every two adjacent reaction tanks are communicated, a water collecting tank (30) is arranged at the right end of each three-stage reaction tank (23), the water collecting tank (30) is communicated with the three-stage reaction tanks (23), a multi-stage turnover type artificial surface flow wetland is arranged at the right end of each water collecting tank (30), the rightmost end of the multi-stage turnover type artificial surface flow wetland is connected with a water storage tank (20) through a flow conveying pipe, and the water storage tank (20) is communicated with a first-stage reaction tank (21) through a return pipe (19);
set up delivery port (31) of carrying its inside rivers to multistage formula artificial surface flow wetland on catchment pond (30), and be equipped with on delivery port (31) and float valve (32), multistage formula artificial surface flow wetland that turns over is including bar recess (35) and bar protruding piece (36) that are the continuity setting, every bar protruding piece (36) all constitute the glossy W type structure in surface between bar recess (35) adjacent rather than both sides, bar recess (35) of multistage formula artificial surface flow wetland leftmost end of turning over are connected with catchment pond (30) through water conservancy diversion slope body (34), and the left end height of water conservancy diversion slope body (34) slightly is less than the height of delivery port (31), every the inside of bar recess (35) all is equipped with filling layer (37), and all in every filling layer (37) have plant two (38), every bar protruding piece (36) are last all set up the intercommunicating pore (31) that are used for communicateing two adjacent bar recesses (35) (40) And the top end of each strip-shaped protruding block (36) is planted with a plant III (39).
2. The urban rainwater flow dividing and purifying system according to claim 1, wherein the first-stage reaction tank (21) and the second-stage reaction tank (22) are provided with water collecting pipes (28) for conveying water flow in the reaction tanks to the bottoms of the adjacent reaction tanks, each water collecting pipe (28) comprises a first water collecting pipe (281) horizontally arranged above the first-stage reaction tank (21) and the second-stage reaction tank (22) and positioned at the inner side of the substrate (24), a water conveying pipe (282) connected with the right end of the first water collecting pipe (281) and vertically extending downwards, and a water discharging pipe (283) vertically connected with the bottom end of the water conveying pipe (282) and positioned at the inner bottoms of the second-stage reaction tank (22) and the third-stage reaction tank (23), a second water collecting pipe (29) positioned at the inner side of the substrate (24) is arranged above the inner side of the third-stage reaction tank (23), and water inlet through holes (284) are arranged on the first water collecting pipes (281) and the second, every all install arc filter screen (285) that protect the port department of inlet opening (284) on the collector pipe, catchment pond (30) are through collector pipe two (29) and tertiary reaction tank (23) intercommunication.
3. The urban rainwater flow dividing and purifying system according to claim 2, wherein the right ends of the first water collecting pipe (281) and the second water collecting pipe (29) penetrate through the side wall of the corresponding reaction tank and extend to the inside of the adjacent reaction tank, a through hole for the water collecting pipe to horizontally penetrate is formed in the side wall of the reaction tank, and a sealing ring sleeved on the water collecting pipe is arranged inside the through hole.
4. The urban rainwater flow dividing and purifying system according to claim 1, wherein the floating valve (32) comprises a connecting plate (321) fixedly arranged on the inner wall of the water collecting tank (30), a supporting rod (322) slidably arranged on the connecting plate (321) and having a rectangular structure, and a floating sealing block (323) fixedly arranged at the bottom end of the supporting rod (322) and sealing the water outlet (31), the connecting plate (321) is provided with a limiting groove (324) for the supporting rod (322) to slide up and down, the inner wall of the limiting groove (324) is provided with a second roller (325), and the top end of the supporting rod (322) is provided with a limiting supporting plate (326) positioned on the connecting plate (321).
5. The urban rainwater diversion and purification system according to claim 1, wherein a second connecting pipe (41) is laid inside the communication hole (40), the length of the second connecting pipe (41) is slightly less than that of the communication hole (40), semicircular filter covers (42) are screwed at two ends of the second connecting pipe (41), and gravels (43) for filtering and protecting two ends of the second connecting pipe (41) are filled inside two ends of the communication hole (40).
6. The urban rainwater diversion and purification system according to claim 1, wherein a sewage drain (5) is arranged at the inner bottom of the diversion tank (2), a sewage drain pipe (17) for discharging high-density rainwater to a purification device is arranged on the sewage drain (5), a water outlet (7) positioned below the pipeline (3) is arranged on the right side wall of the diversion tank (2), the water outlet (7) is connected with the water storage tank (20) through a first connecting pipe (8), a sealing mechanism (6) for automatically sealing the sewage drain (5) is arranged in the diversion tank (2), the sealing mechanism (6) comprises a sealing ball (61), a connecting block (62) formed at the bottom end of the sealing ball (61), and a sealing plug (63) formed at the bottom end of the connecting block (62) and inserted into the inner side of the sewage drain (5), the sealing ball (61), The density of the connecting block (62) and the density of the sealing plug (63) are both equal to the density of clean rainwater, the sealing plug (63) is tightly clamped on the inner side of the sewage draining outlet (5) when the density of rainwater in the diversion pool (2) is at the density of the clean rainwater or lower than the density of the clean rainwater, and the sealing plug (63) moves upwards under the action of buoyancy when the density of rainwater in the diversion pool (2) is higher than the density of the clean rainwater;
the top end of the sealing ball (61) is connected with an adjusting block (10) with a size larger than the size of the water outlet (7) and a sealing gasket (11) which is adhered to the right end face of the adjusting block (10) and used for sealing the water outlet (7) through an L-shaped connecting rod (9), a limiting mechanism for limiting the adjusting block (10) and the sealing ball (61) during up-and-down movement is arranged in the shunting pool (2), the limiting mechanism comprises a limiting rod (12) which is arranged at the top in the shunting pool (2) and vertically extends downwards, a sliding groove (13) which is arranged on the adjusting block (10) and is used for the limiting rod (12) to vertically pass through, a limiting support block (16) which is fixedly arranged at the bottom end of the limiting rod (12) and is larger than the size of the sliding groove (13), the limiting support block (16) is positioned below the adjusting block (10), and the bottom end of the adjusting block (10) is contacted with the limiting support block (16) when rainwater in the shunting pool (2) is at, the inner side of the sliding groove (13) is provided with a first roller (14) which is vertically arranged and at least comprises two rows, at least one roller (14) is arranged in each row, and the limiting rod (12) is provided with a slide way (15) for the first roller (14) in each row to slide up and down.
7. The urban rainwater flow dividing and purifying system according to claim 6, wherein a gravity settling tank (1) is arranged on the left side of the flow dividing tank (2), the flow dividing tank (2) is communicated with the gravity settling tank (1) through a pipeline (3), a bent end (4) with a downward opening is arranged at the left end of the pipeline (3) and is positioned on the inner side of the gravity settling tank (1), and a first filter screen (401) is arranged at the opening of the bent end (4).
8. The urban rainwater flow dividing and purifying system according to claim 1, wherein the water outlet (7) comprises a channel (71) formed in the side wall of the right end of the flow dividing tank (2), an expansion port (72) formed in the left port of the channel (71), and a second filter screen (721) installed inside the expansion port (72) and used for filtering water flow entering the inner side of the channel (71).
9. The urban rainwater flow dividing and purifying system according to claim 1, wherein a communication pipe (18) in an L-shaped structure is installed at one end of the first connecting pipe (8) connected with the water outlet (7), and the vertical part of the communication pipe (18) is arranged vertically upwards.
10. A city rainwater flow dividing and purifying system according to claim 7, characterized in that the diameter of said sewage draining outlet (5) is larger than the diameter of the pipeline (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508568.6A CN112551820A (en) | 2020-12-18 | 2020-12-18 | Urban rainwater reposition of redundant personnel, clean system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508568.6A CN112551820A (en) | 2020-12-18 | 2020-12-18 | Urban rainwater reposition of redundant personnel, clean system |
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| CN112551820A true CN112551820A (en) | 2021-03-26 |
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| CN202011508568.6A Pending CN112551820A (en) | 2020-12-18 | 2020-12-18 | Urban rainwater reposition of redundant personnel, clean system |
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| CN114718149A (en) * | 2022-04-02 | 2022-07-08 | 吕永华 | Sponge urban rainwater treatment and recycling integrated equipment |
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