CN114396108B - Sponge urban rainwater collection and purification treatment system - Google Patents
Sponge urban rainwater collection and purification treatment system Download PDFInfo
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- CN114396108B CN114396108B CN202210055581.3A CN202210055581A CN114396108B CN 114396108 B CN114396108 B CN 114396108B CN 202210055581 A CN202210055581 A CN 202210055581A CN 114396108 B CN114396108 B CN 114396108B
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- 238000000746 purification Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 271
- 239000010865 sewage Substances 0.000 claims abstract description 113
- 238000004062 sedimentation Methods 0.000 claims abstract description 51
- 239000002699 waste material Substances 0.000 claims abstract description 45
- 238000001914 filtration Methods 0.000 claims abstract description 40
- 238000011010 flushing procedure Methods 0.000 claims description 34
- 238000007667 floating Methods 0.000 claims description 31
- 238000005192 partition Methods 0.000 claims description 26
- 239000004576 sand Substances 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000011150 reinforced concrete Substances 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 description 13
- 239000012535 impurity Substances 0.000 description 6
- 239000004746 geotextile Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- 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
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
- E03F5/108—Cleaning devices providing a flushing surge
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Toxicology (AREA)
- Sewage (AREA)
Abstract
The invention discloses a sponge urban rainwater collection and purification treatment system, which comprises a rainwater initial drainage well (1), a rainwater sewage interception well (2), a water storage sedimentation tank (3), a rainwater purification assembly (4), a water inlet pipe (5), a water distribution pipe (6), a drainage overflow pipe (7) and a sewage buffer well (8); in the drainage well body (11), a rainwater diversion chamber (13) is communicated with a drainage overflow chamber (15), the rainwater diversion chamber is communicated with a drainage control chamber (14) through a drainage port (16), and the drainage control chamber is communicated with the drainage overflow chamber through a drainage pipe (17); the water inlet pipe and the water distribution pipe are connected with the rainwater diversion chamber, the water distribution pipe is connected with the rainwater intercepting well, and the waste overflow pipe is connected with the waste overflow chamber and the sewage buffer well; the rainwater dirt-intercepting well is connected with the sewage buffer well and the water storage sedimentation tank, and the water storage sedimentation tank is connected with the rainwater purifying component. The invention divides, filters, precipitates, filters and disinfects the rainwater, improves the filtering effect of the rainwater pretreatment, and ensures that the quality of the purified rainwater reaches the relevant recycling standard.
Description
Technical Field
The invention relates to rainwater treatment equipment, in particular to a sponge urban rainwater collection and purification treatment system.
Background
The sponge city is a new generation city rain and flood management concept, and the city can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by rainwater and the like, and can be also called as a 'water elasticity city'. When raining, water is absorbed, stored, permeated and purified, and the stored water is released and utilized as required, so that the free migration of rainwater in cities is realized. As the initial rainwater flushes buildings, road surfaces and the like, and simultaneously absorbs harmful gases in the air, more sundries in the initial rainwater are caused, and along with the increase of the rainwater, the sundries in the rainwater are gradually reduced. Most of the rainwater recovery devices in the prior art have a single function of collecting rainwater, and the rainwater recovery devices in the prior art cannot separate initial rainwater from clean rainwater, so that the quality of the rainwater which enters the reservoir after being collected is poor; the reservoir is generally buried under the ground surface, and a large amount of sundries are deposited on the bottom of the reservoir after long-term use, so that the reservoir is difficult to clean and maintain and the release and use of rainwater are affected.
Disclosure of Invention
The invention aims to provide a sponge urban rainwater collecting and purifying treatment system which can carry out diversion, filtration, precipitation, filtration and disinfection treatment on rainwater, and improves the filtration effect of rainwater pretreatment, so that the quality of purified rainwater can reach relevant recycling standards, and meanwhile, the purification effect of rainwater is further ensured through the self-cleaning function of a water storage sedimentation tank.
The invention is realized in the following way:
a sponge urban rainwater collection and purification treatment system comprises a rainwater initial drainage well, a rainwater sewage interception well, a water storage sedimentation tank, a rainwater purification component, a water inlet pipe, a water distribution pipe, a drainage overflow pipe and a sewage buffer well; the initial rainwater drainage well comprises a drainage well body, and the drainage well body is divided into a rainwater diversion chamber, a drainage control chamber and a drainage overflow chamber by a T-shaped partition wall; the rainwater diversion chamber is communicated with the waste flow overflow chamber through an overflow port on the partition wall, the rainwater diversion chamber is communicated with the waste flow control chamber through a waste flow port on the partition wall, a waste flow pipe is arranged in the waste flow control chamber, one end of the waste flow pipe extends into the waste flow overflow chamber, and the waste flow control chamber is communicated with the waste flow overflow chamber through the waste flow pipe; the water inlet pipe is communicated with the rainwater diversion chamber, one end of the water distribution pipe is communicated with the rainwater diversion chamber, and the other end of the water distribution pipe is communicated with the water inlet of the rainwater dirt interception well; one end of the waste flow overflow pipe is communicated with the waste flow overflow chamber, and the other end of the waste flow overflow pipe is communicated with the sewage buffer well; the drain of the rainwater dirt interception well is communicated with the sewage buffer well through a water pipe, and the water outlet of the rainwater dirt interception well is connected to the rainwater purification component through a water storage sedimentation tank.
The overflow port is higher than the water distribution pipe, and the drainage port and the drainage overflow pipe are lower than the water distribution pipe.
A floating ball assembly is arranged in the waste flow control chamber and comprises a floating ball chamber, a floating ball and a piston; a first opening communicated with the drainage port is formed on one side of the floating ball chamber, and a second opening communicated with the drainage pipe is formed on the other side of the floating ball chamber; the floating ball and the piston can be arranged in the floating ball chamber in a floating way, and the floating ball is arranged on the piston; a diversion hole is formed in the piston, one end of the diversion hole can be communicated with the abandon flow port, and the other end of the diversion hole can be communicated with the abandon flow pipe.
The diameter of the drainage pipe is consistent with the aperture of the diversion hole, the diameter of the drainage pipe is smaller than that of the drainage port, and the diameter of the drainage pipe is smaller than that of the water distribution pipe;
the water distribution pipe is provided with a filter screen at one end in the rainwater diversion chamber, and the end of the drainage port in the rainwater diversion chamber is provided with a filter screen.
The rainwater sewage interception well comprises a sewage interception well body, a sewage interception water inlet pipe communicated with the water distribution pipe is arranged at the upper part of the sewage interception well body, a filtering water distribution assembly is arranged in the sewage interception well body, and the water outlet end of the sewage interception water inlet pipe is positioned right above the filtering water distribution assembly; the lower part of the sewage interception well body is provided with a first sewage drain pipe, one end of the first sewage drain pipe is communicated with the sewage outlet of the filtering water diversion component, and the other end of the first sewage drain pipe is connected to the sewage buffer well; the bottom of the sewage interception well body is provided with a sewage interception water outlet pipe which is positioned below the filtering water distribution component.
The filtering water diversion assembly comprises a filtering assembly and a water diversion device, a fixed ring is arranged on the inner wall of the sewage interception well body along the circumferential direction of the sewage interception well body, the water diversion device is arranged in the sewage interception well body through the fixed ring, and a water inlet of the water diversion device is positioned below a water outlet end of the sewage interception water inlet pipe; the filter assembly is arranged below the water separator, the water outlet of the water separator is arranged in the filter assembly, and the sewage interception water outlet pipe is connected to the bottom of the filter assembly;
the filter assembly comprises a baffle plate, a filter cylinder and a lower interface; the baffle is of an annular structure, the outer ring of the baffle is erected on the fixed ring, and the outer ring of the baffle is connected with the inner wall of the sewage interception well body in a sealing way through the sealing ring; a plurality of water diversion pipes are arranged on the side wall of the bottom of the water diversion device at intervals, the axis of each water diversion pipe forms an acute angle with the tangent line of the outer wall of the water diversion device, and the upper end of the water diversion device is opened and can be rotatably embedded in the inner ring of the partition board; the filter cylinder is of a cylindrical structure with a wide upper part and a narrow lower part, the upper end of the filter cylinder is fixedly connected with the bottom of the outer ring of the partition board, and the lower end of the filter cylinder is connected with the first sewage draining pipe through a lower interface.
The upper end of the dirt interception well body is provided with a checking opening, and the checking opening is provided with a dirt interception well cover; the dirt intercepting well cover comprises a well cover body provided with a plurality of through holes at intervals, each through hole is provided with a bulge, the bulge is in a cambered surface structure, a cavity is formed between the bulge and the well cover body, and the cavity is communicated with the through holes; a plurality of filter holes communicated with the cavity are arranged on the bulge at intervals.
The PP module is filled in the water storage sedimentation tank, a water inlet well is formed on one side of the interior of the water storage sedimentation tank, and a lifting well is formed on the other side of the interior of the water storage sedimentation tank; the upper end of the water inlet well is provided with an opening, and the water outlet of the sewage interception water outlet pipe extends into the water inlet well; a lifting pump and a sewage pump are arranged in the lifting well, and a water outlet of the lifting pump and a water outlet of the sewage pump are connected to the rainwater purification component; the water outlet of the sewage pump is connected with a second sewage pipe and extends to the outside of the lifting well.
The bottom of the water storage sedimentation tank is provided with an anti-seepage reinforcing layer, the anti-seepage reinforcing layer comprises an anti-seepage film layer, a fine sand cushion layer, a reinforced concrete bottom plate and a concrete cushion layer from top to bottom, and geotechnical cloth layers are arranged around the anti-seepage film layer; the top of retaining sedimentation tank be equipped with the permeable layer, the permeable layer is fine sand bed course and geotechnique's cloth layer from top to bottom in proper order.
The rainwater purification assembly comprises a filter and a sterilizer; the water inlet of the filter is provided with a water purifying pipe which is connected to the water outlet end of the lifting pump; a back flushing main pipe is arranged on the water purifying pipe, a plurality of back flushing branch pipes are distributed in the water storage sedimentation tank at intervals, and the back flushing branch pipes are connected to the back flushing main pipe; the drain outlet of the filter is provided with a third drain pipe, and the second drain pipe is converged to the third drain pipe; the water outlet of the filter is connected with the water inlet of the sterilizer.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention sets a T-shaped partition wall in the initial rainwater drainage well, and sets a water inlet pipe, a water distribution pipe and a drainage overflow pipe on the initial rainwater drainage well, and sets a drainage port, a drainage flow pipe and an overflow port on the partition wall, wherein the drainage port is positioned below the water distribution pipe, and the overflow port is positioned above the water distribution pipe, and the initial rainwater is discharged through the drainage port, the drainage pipe and the drainage overflow pipe, and clean rainwater flows into the rainwater dirt interception well from the water distribution pipe for filtration treatment and then enters the water storage sedimentation tank, so as to achieve the purposes of diversion, overflow and preliminary filtration of the rainwater.
2. The invention is provided with the rainwater dirt-intercepting well and the water storage sedimentation tank, rainwater is rotationally separated in the rainwater dirt-intercepting well and secondarily filtered, then enters the water storage sedimentation tank, is conveyed into the filter and the sterilizer through the lifting pump and the water purifying pipe for filtration and sterilization after sedimentation and filtration, thus realizing the functions of filtration, sedimentation and filtration sterilization of the rainwater, improving the filtration effect of the pretreatment of the rainwater, and further ensuring that the quality of the purified rainwater can reach the relevant recycling standard.
3. The invention is provided with the back flushing main pipe and the back flushing branch pipe, the back flushing main pipe is connected with the back flushing branch pipe, and under the action of the lifting pump, rainwater in the water storage sedimentation tank sequentially flows through the water purifying pipe, the back flushing main pipe and the back flushing branch pipe to clean the water storage sedimentation tank, thereby realizing the self-cleaning function of the water storage sedimentation tank.
Drawings
FIG. 1 is a front view of the sponge city rainwater collection and purification treatment system of the present invention;
FIG. 2 is a plan view of a rainwater primary drainage well in the sponge urban rainwater collection and purification treatment system of the invention;
FIG. 3 is a longitudinal cross-sectional view of the rainwater diversion chamber and the reject flow control chamber in the sponge urban rainwater collection and purification treatment system of the present invention;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is a longitudinal cross-sectional view of a rainwater intercepting well in the sponge city rainwater collecting and purifying treatment system of the present invention;
FIG. 6 is an enlarged schematic view at B in FIG. 5;
FIG. 7 is a bottom view of the water separator of the sponge city rainwater collecting and purifying treatment system of the present invention;
FIG. 8 is a longitudinal cross-sectional view of a water storage sedimentation tank in the sponge city rainwater collection and purification treatment system of the present invention;
FIG. 9 is a longitudinal cross-sectional view of an impermeable reinforcing layer in a sponge urban rainwater collection and purification treatment system of the present invention.
In the figure, 1-rainwater initial drainage well, 11-drainage well body, 12-partition wall, 13-rainwater diversion chamber, 14-drainage control chamber, 15-drainage overflow chamber, 16-drainage port, 17-drainage pipe, 18-floating ball component, 181-floating ball chamber, 182-floating ball, 183-piston, 184-drainage hole, 19-filter screen, 2-rainwater drainage well, 21-drainage well body, 211-drainage inlet pipe, 212-drainage outlet pipe, 213-first drain pipe, 214-fixed ring, 22-filter component, 221-partition plate, 222-filter cartridge, 223-lower interface, 23-water separator, 231-water separator, 24-drainage well cover, 241-well cover body, 242-through hole, 243-bulge, 244-cavity, 3-water storage sedimentation tank, 31-water inlet well, 32-lifting well, 33-lifting pump, 34-drainage pump, 35-PP module, 36-reinforcement layer, 363-impermeable membrane layer, 362-bedding layer, 364-impermeable layer, sand-bottom plate, 364-filter component, 221-partition plate, 4-partition plate, 222-drainage pipe, back flushing water back flushing pipe, 7-drainage pipe, 43-water back flushing pipe, 43-flushing pipe, 4-water back flushing pipe, 7-flushing pipe, 43-water back flushing pipe, 4-flushing pipe, 7-sewage pipe, 43-flushing pipe, 7-water back flushing pipe, 7-flushing pipe, and 7-sewage pipe.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1 and 2, a sponge urban rainwater collecting and purifying treatment system comprises a rainwater initial drainage well 1, a rainwater intercepting well 2, a water storage sedimentation tank 3, a rainwater purifying component 4, a water inlet pipe 5, a water distribution pipe 6, a drainage overflow pipe 7 and a sewage buffer well 8; the initial rainwater drainage well 1 comprises a drainage well body 11, wherein the drainage well body 11 is divided into a rainwater diversion chamber 13, a drainage control chamber 14 and a drainage overflow chamber 15 by a T-shaped partition wall 12; the rainwater diversion chamber 13 is communicated with the waste stream overflow chamber 15 through an overflow port (not shown in the figure) on the partition wall 12, the rainwater diversion chamber 13 is communicated with the waste stream control chamber 14 through a waste stream port 16 on the partition wall 12, a waste stream pipe 17 is arranged in the waste stream control chamber 14, one end of the waste stream pipe 17 extends into the waste stream overflow chamber 15, and the waste stream control chamber 14 is communicated with the waste stream overflow chamber 15 through the waste stream pipe 17; the water inlet pipe 5 is communicated with the rainwater diversion chamber 13, one end of the water distribution pipe 6 is communicated with the rainwater diversion chamber 13, and the other end of the water distribution pipe 6 is communicated with the water inlet of the rainwater sewage interception well 2; one end of the waste overflow pipe 7 is communicated with the waste overflow chamber 15, and the other end of the waste overflow pipe 7 is communicated with the sewage buffer well 8; the drain of the rainwater dirt interception well 2 is communicated with the sewage buffer well 8 through a water pipe, and the water outlet of the rainwater dirt interception well 2 is connected to the rainwater purification component 4 through the water storage sedimentation tank 3.
Preferably, the overflow port is higher than the water distribution pipe 6, the drainage port 16 and the drainage overflow pipe 7 are lower than the water distribution pipe 6, the initial rainwater can be guided by the drainage port 16 and the drainage overflow pipe 7, and along with the increase of the rainwater, the rainwater can be guided by the water distribution pipe 6 and the overflow port.
Referring to fig. 2 to 4, a float ball assembly 18 is disposed in the flow discarding control chamber 14, and the float ball assembly 18 includes a float ball chamber 181, a float ball 182 and a piston 183; a first opening communicated with the drainage port 16 is formed on one side of the float chamber 181, and a second opening communicated with the drainage pipe 17 is formed on the other side of the float chamber 181; the floating ball 182 and the piston 183 are floatably arranged in the floating ball chamber 181, and the floating ball 182 is arranged on the piston 183; a diversion hole 184 is formed in the piston 183, and one end of the diversion hole 184 can communicate with the reject flow port 16, and the other end of the diversion hole 184 can communicate with the reject flow pipe 17. The floating ball 182 and the piston 183 are positioned at the bottom of the floating ball chamber 181 by gravity, and at the moment, the diversion hole 184 is communicated with the diversion port 16 and the diversion pipe 17 to form a diversion channel through which rainwater can be diverted; when the water level in the float chamber 181 rises, the float 182 and the piston 183 rise under the buoyancy force, the diversion hole 184 is staggered with the drainage port 16 and the drainage pipe 17, the drainage channel is closed, and rainwater is prevented from flowing through the drainage channel.
Preferably, the diameter of the drainage pipe 17 is consistent with the diameter of the diversion hole 184, the diameter of the drainage pipe 17 is smaller than the diameter of the drainage port 16, the diameter of the drainage pipe 17 is smaller than the diameter of the water distribution pipe 6, and when the rainfall is increased, the drainage cannot be performed in time due to the smaller diameter of the drainage pipe 17, so that the drainage port 16 can be closed by the floating ball assembly 18 by utilizing the rising of the water level, and the closing of the drainage channel is further ensured.
The one end that water distribution pipe 6 be located rainwater diversion chamber 13 in be equipped with filter screen 19, the one end that abandon the mouth 16 and be located rainwater diversion chamber 13 is equipped with filter screen 19, can filter, intercept the debris that carries in the rainwater through filter screen 19.
Referring to fig. 1 and 5, the rainwater sewage interception well 2 includes a sewage interception well body 21, a sewage interception inlet pipe 211 communicated with the water distribution pipe 6 is arranged at the upper part of the sewage interception well body 21, a filtering water distribution component is arranged in the sewage interception well body 21, and the water outlet end of the sewage interception inlet pipe 211 is positioned right above the filtering water distribution component; the lower part of the sewage interception well body 21 is provided with a first sewage drain pipe 213, one end of the first sewage drain pipe 213 is communicated with the sewage drain of the filtering water diversion component, and the other end of the first sewage drain pipe 213 is connected to the sewage buffer well 8; the bottom of the sewage interception well body 21 is provided with a sewage interception water outlet pipe 212, and the sewage interception water outlet pipe 212 is positioned below the filtering and water dividing assembly. The rainwater dirt interception well 2 is used for separating rainwater from solid impurities mixed in the rainwater and sending the rainwater to the water storage sedimentation tank 3, and the solid impurities mixed in the rainwater are separated and sent to the sewage buffer well 8.
The filtering and water dividing assembly comprises a filtering assembly 22 and a water divider 23, a fixing ring 214 is arranged on the inner wall of the sewage interception well body 21 along the circumferential direction of the sewage interception well body 21, the water divider 23 is arranged in the sewage interception well body 21 through the fixing ring 214, and a water inlet of the water divider 23 is positioned below a water outlet end of the sewage interception water inlet pipe 211; the filter assembly 22 is arranged below the water separator 23, the water outlet of the water separator 23 is arranged in the filter assembly 22, and the sewage interception water outlet pipe 212 is connected to the bottom of the filter assembly 22. The rainwater can be separated from the solid impurities through the filtering component 22 and the water separator 23, so that the subsequent purification treatment of the rainwater is facilitated.
Referring to fig. 5 and 7, the filter assembly 22 includes a partition 221, a filter cartridge 222, and a lower interface 223; the baffle 221 is of an annular structure, the outer ring of the baffle 221 is erected on the fixed ring 214, and the outer ring of the baffle 221 is connected with the inner wall of the sewage interception well body 21 in a sealing way through a sealing ring; a plurality of water diversion pipes 231 are arranged on the side wall of the bottom of the water diversion device 23 at intervals, an acute angle is formed between the axis of each water diversion pipe 231 and the tangent line of the outer wall of the water diversion device 23, and the upper end of the water diversion device 23 is opened and is rotatably embedded in the inner ring of the partition plate 221; the filter cartridge 222 has a cylindrical structure with a wide upper part and a narrow lower part, the upper end of the filter cartridge 222 is fixedly connected with the bottom of the outer ring of the partition 221, and the lower end of the filter cartridge 222 is connected with the first drain pipe 213 through the lower interface 223. Bearings can be arranged between the water separator 23 and the inner ring of the partition plate 221, so that the water separator 23 is ensured to smoothly rotate under the pushing of the drainage reaction force of the water separator pipe 231, rainwater is flushed onto the filter cylinder 222, the filter cylinder 222 is used for separating and filtering the rainwater and sundries, the rainwater directly enters the sewage interception well body 21 through the filtering holes of the filter cylinder 222, and the separated sewage falls into the first sewage draining pipe 213 downwards. The filter cylinder 222 with a cylindrical structure with a wide upper part and a narrow lower part has a large contact area with rainwater, and has a good filtering effect.
Preferably, the included angle between the axis of the water diversion pipe 231 and the tangent line of the outer wall of the water diversion device 23 is 15-45 degrees, at least three water diversion pipes 231 are arranged on the water diversion device 23 at equal intervals, and the water diversion device 23 is rotated by the reaction force generated when water is discharged from the water diversion pipes 231.
Preferably, the pore size of the filter cartridge 222 is smaller than that of the filter screen 19, ensuring a multistage filtering effect on impurities in rainwater.
Referring to fig. 5 and 6, a view port is provided at the upper end of the dirt interception well body 21, and a dirt interception well lid 24 is provided at the view port; the dirt intercepting well cover 24 comprises a well cover body 241 provided with a plurality of through holes 242 at intervals, each through hole 242 is provided with a protrusion 243, each protrusion 243 is in a cambered surface structure, a cavity 244 is formed between each protrusion 243 and the well cover body 241, and the cavity 244 is communicated with the through hole 242; the protrusions 243 are provided with a plurality of filtering holes communicated with the cavities 244 at intervals, and rainwater can enter the sewage interception well body 21 through the through holes 242 by the filtering holes on the protrusions 243.
Preferably, the number of the through holes 242 on the well cover body 241 is not less than three and is arranged at equal intervals, and the number of the filtering holes on each protrusion 243 is not less than three and is arranged at equal intervals.
Preferably, the filter aperture on the protrusions 243 is larger than the filter aperture of the filter cartridge 222.
Referring to fig. 1 and 8, a PP (polypropylene) module 35 is filled in the water storage sedimentation tank 3, an inlet well 31 is formed on one side of the interior of the water storage sedimentation tank 3, and a lifting well 32 is formed on the other side of the interior of the water storage sedimentation tank 3; the upper end of the water inlet well 31 is opened, and the water outlet of the sewage interception water outlet pipe 212 extends into the water inlet well 31; a lift pump 33 and a sewage pump 34 are arranged in the lift well 32, and a water outlet of the lift pump 33 and a water outlet of the sewage pump 34 are connected to the rainwater purification component 4; a second drain 38 is connected to the outlet of the drain pump 34 and extends outside the lift well 32. After entering the water inlet well 31, the rainwater enters the lifting well 32 after being further filtered and purified by the PP module 35, the clean water part of the rainwater in the lifting well 32 is pumped to the rainwater purification assembly 4 by the lifting pump 33, and the sewage part is discharged by the sewage pump 34 through the second sewage pipe 38.
Preferably, the PP module 35 is formed by detachably connecting a plurality of high-density local polyethylene water storage modules, and the high-density local polyethylene water storage modules are uniformly distributed in the water storage sedimentation tank 3, so that the installation and the replacement are convenient, and the better adsorption and filtration effects can be achieved.
Referring to fig. 9, an anti-seepage reinforcing layer 36 is disposed at the bottom of the water storage sedimentation tank 3, the anti-seepage reinforcing layer 36 comprises an anti-seepage membrane layer 361, a fine sand cushion 363, a reinforced concrete bottom plate 364 and a concrete cushion 365 from top to bottom, and geotechnical cloth layers 362 are disposed around the anti-seepage membrane layer 361. The seepage-proofing reinforcing layer 36 can play an effective supporting role to prevent the bottom of the water storage sedimentation tank 3 from collapsing.
The top of retaining sedimentation tank 3 be equipped with permeable layer 37, permeable layer 37 is fine sand bed course and geotechnique's cloth layer from top to bottom in proper order, makes the rainwater can permeate to in the PP module 35.
The construction method of the water storage sedimentation tank 3 comprises the following steps:
step 1: and excavating a water storage sedimentation tank 3.
Step 2: paving a gravel layer with the thickness of 5cm on plain soil at the bottom of the water storage sedimentation tank 3, and pouring a plain concrete layer with the thickness of 20cm on the gravel layer to serve as a concrete cushion 365 for supporting; a reinforced concrete bottom plate 364 is poured on the plain concrete layer, and a fine sand cushion 363 having a thickness of 5cm is laid on the reinforced concrete bottom plate 364.
Step 3: paving an impermeable film on the fine sand cushion 363 to serve as an impermeable film layer 361; geotextiles are laid around the fine sand mat 363 as geotextile layers 362.
Step 4: the PP module 35 is piled up in the water storage sedimentation tank 3, and the water inlet well 31 and the lifting well 32 are reserved.
Step 5: fine sand with a thickness of 50cm was backfilled around the PP module 35 for protecting the PP module 35.
Step 6: laying geotextile on the PP module 35 to form a geotextile layer; backfilling a fine sand layer with the thickness of 50cm on the geotechnical cloth layer to form a fine sand cushion layer; and finally backfilling the soil.
Step 7: the water inlet well 31 and the lift well 32 are built, and the lift pump 33 and the sewage pump 34 are installed in the lift well 32.
Referring to fig. 1 and 8, the rainwater purification unit 4 includes a filter 41 and a sterilizer 42; the water inlet of the filter 41 is provided with a water purifying pipe 43, and the water purifying pipe 43 is connected to the water outlet end of the lift pump 33; a back flushing main pipe 44 is arranged on the water purifying pipe 43, a plurality of back flushing branch pipes 39 are distributed in the water storage sedimentation tank 3 at intervals, and the plurality of back flushing branch pipes 39 are connected to the back flushing main pipe 44; the drain outlet of the filter 41 is provided with a third drain pipe 45, and the second drain pipe 38 merges into the third drain pipe 45; the water outlet of the filter 41 is connected with the water inlet of the sterilizer 42. The lifting pump 33 can pump the purified water part in the precipitation-filtered rainwater to the filter 41 through the water purifying pipe 43, and after the precipitation-filtered rainwater is further filtered by the filter 41 and disinfected by the disinfector 42, the content of pollutants and impurities in the rainwater is less, and the rainwater meets the emission and reuse standards. Meanwhile, the back flushing main pipe 44 and the back flushing branch pipes 39 can be utilized to back flush the filtered and sterilized rainwater into the water storage sedimentation tank 3 for cleaning the water storage sedimentation tank 3.
Preferably, the water purifying pipe 43 is connected with the filter 41 through an electromagnetic valve, the back flushing main pipe 44 is connected with the water purifying pipe 43 through an electromagnetic valve, the third sewage draining pipe 45 is connected with the filter 41 through an electromagnetic valve, and the water outlet of the filter 41 is connected with the water inlet of the sterilizer 42 through an electromagnetic valve. The flow direction of water flow is controlled by opening and closing the electromagnetic valve, so that rainwater is convenient to treat and backwash the water storage sedimentation tank 3 by utilizing the rainwater.
Preferably, the filter 41 may be a multi-medium filter, and the sterilizer 42 may be an infrared sterilizer, which may perform a multi-stage filtering and infrared sterilization function to ensure a purification treatment of the rainwater.
The working principle of the invention is as follows:
in the initial state, the piston 183 is positioned at the bottom of the float chamber 181, and the drainage port 16, the diversion hole 184 and the drainage pipe 17 are sequentially communicated. In the initial stage of rainwater, the rainwater flow is smaller, the rainwater enters the rainwater diversion chamber 13 of the drainage well body 11 from the water inlet pipe 5, flows into the floating ball chamber 181 from the drainage port 16, flows into the drainage overflow chamber 15 through the diversion hole 184 and the drainage pipe 17, and flows out of the drainage overflow pipe 7 to the sewage buffer well 8.
After the rainfall is increased, as the caliber of the diversion hole 184 and the caliber of the abandon flow pipe 17 are smaller than the caliber of the abandon flow pipe 16, rainwater cannot be discharged in time, the water level in the rainwater diversion chamber 13 and the floating ball chamber 181 rises, the floating ball 182 floats upwards under the buoyancy of the water, and then the piston 183 is driven to move upwards, so that the diversion hole 184 and the abandon flow pipe 17 are staggered, and the abandon flow passage is closed. At this time, the rainwater diversion chamber 13 can only flow out from the water distribution pipe 6, and when the water level of the rainwater diversion chamber 13 overflows the overflow port, the rainwater in the rainwater diversion chamber 13 flows into the waste overflow chamber 15 from the overflow port and flows out from the waste overflow pipe 7.
Rainwater flowing out of the water distribution pipe 6 enters the sewage interception well body 21, flows into the water separator 23 through the sewage interception water inlet pipe 211, flows out along a plurality of inclined water distribution pipes 231 of the water separator 23, and flows out of the water interception well body into the water inlet well 31 of the water storage sedimentation tank 3 after being filtered by the filter cylinder 222 due to the fact that the axes of the water distribution pipes 231 form acute angles with the tangential line of the outer wall of the water separator 23, the water flowing out of the water distribution pipes 231 rotates to enable the water separator 23 to scatter around the water separator 23 in the rotating process. The impurities trapped by the filter cartridge 222 are discharged from the first drain pipe 213 to the sewage buffer well 8.
The rainwater in the water inlet well 31 enters the lifting well 32 after being filtered by the PP module 35, the purified rainwater is lifted to the filter 41 by the lifting pump 33 through the water purifying pipe 43, and is filtered by the filter 41 and disinfected by the disinfector 42; the sludge pump 34 pumps out the sludge and other sediments at the bottom of the lifting well 32 through the second sludge discharge pipe 38 and merges to the third sludge discharge pipe 45 to be discharged together. When the water storage sedimentation tank 3 needs to be washed, the PP module 35 can be taken out, water in the filter 41 is led out through the back flushing main pipe 44, and the water storage sedimentation tank 3 is washed through the back flushing branch pipe 39.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the invention, and therefore, any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A sponge urban rainwater collection and purification treatment system is characterized in that: the device comprises a rainwater initial drainage well (1), a rainwater sewage interception well (2), a water storage sedimentation tank (3), a rainwater purification assembly (4), a water inlet pipe (5), a water distribution pipe (6), a drainage overflow pipe (7) and a sewage buffer well (8); the initial rainwater drainage well (1) comprises a drainage well body (11), wherein the drainage well body (11) is divided into a rainwater diversion chamber (13), a drainage control chamber (14) and a drainage overflow chamber (15) through a T-shaped partition wall (12); the rainwater diversion chamber (13) is communicated with the waste stream overflow chamber (15) through an overflow port on the partition wall (12), the rainwater diversion chamber (13) is communicated with the waste stream control chamber (14) through a waste stream port (16) on the partition wall (12), a waste stream pipe (17) is arranged in the waste stream control chamber (14), one end of the waste stream pipe (17) extends into the waste stream overflow chamber (15), and the waste stream control chamber (14) is communicated with the waste stream overflow chamber (15) through the waste stream pipe (17); the water inlet pipe (5) is communicated with the rainwater diversion chamber (13), one end of the water distribution pipe (6) is communicated with the rainwater diversion chamber (13), and the other end of the water distribution pipe (6) is communicated with the water inlet of the rainwater sewage interception well (2); one end of the waste flow overflow pipe (7) is communicated with the waste flow overflow chamber (15), and the other end of the waste flow overflow pipe (7) is communicated with the sewage buffer well (8); the sewage outlet of the rainwater sewage interception well (2) is communicated with the sewage buffer well (8) through a water pipe, and the water outlet of the rainwater sewage interception well (2) is connected to the rainwater purification component (4) through the water storage sedimentation tank (3);
a floating ball assembly (18) is arranged in the waste flow control chamber (14), and the floating ball assembly (18) comprises a floating ball chamber (181), a floating ball (182) and a piston (183); a first opening communicated with the drainage port (16) is formed on one side of the floating ball chamber (181), and a second opening communicated with the drainage pipe (17) is formed on the other side of the floating ball chamber (181); the floating ball (182) and the piston (183) can be arranged in the floating ball chamber (181) in a floating way, and the floating ball (182) is arranged on the piston (183); a diversion hole (184) is formed in the piston (183), one end of the diversion hole (184) can be communicated with the drainage port (16), and the other end of the diversion hole (184) can be communicated with the drainage pipe (17);
the rainwater sewage interception well (2) comprises a sewage interception well body (21), a sewage interception water inlet pipe (211) communicated with the water distribution pipe (6) is arranged at the upper part of the sewage interception well body (21), a filtering water distribution component is arranged in the sewage interception well body (21), and the water outlet end of the sewage interception water inlet pipe (211) is positioned right above the filtering water distribution component; the lower part of the sewage interception well body (21) is provided with a first sewage drain pipe (213), one end of the first sewage drain pipe (213) is communicated with a sewage drain outlet of the filtering water diversion assembly, and the other end of the first sewage drain pipe (213) is connected to the sewage buffer well (8); the bottom of the sewage interception well body (21) is provided with a sewage interception water outlet pipe (212), and the sewage interception water outlet pipe (212) is positioned below the filtering water distribution component;
the filtering water diversion assembly comprises a filtering assembly (22) and a water diversion device (23), a fixing ring (214) is arranged on the inner wall of the sewage interception well body (21) along the circumferential direction of the sewage interception well body (21), the water diversion device (23) is arranged in the sewage interception well body (21) through the fixing ring (214), and a water inlet of the water diversion device (23) is positioned below a water outlet end of the sewage interception water inlet pipe (211); the filter assembly (22) is arranged below the water separator (23), a water outlet of the water separator (23) is arranged in the filter assembly (22), and the sewage interception water outlet pipe (212) is connected to the bottom of the filter assembly (22);
the filter assembly (22) comprises a baffle plate (221), a filter cylinder (222) and a lower interface (223); the partition plate (221) is of an annular structure, the outer ring of the partition plate (221) is erected on the fixed ring (214), and the outer ring of the partition plate (221) is connected with the inner wall of the sewage interception well body (21) in a sealing way through a sealing ring; a plurality of water diversion pipes (231) are arranged on the side wall of the bottom of the water diversion device (23) at intervals, an acute angle is formed between the axis of each water diversion pipe (231) and the tangent line of the outer wall of the water diversion device (23), and the upper end of the water diversion device (23) is opened and can be rotatably embedded in the inner ring of the partition plate (221); the filter cylinder (222) is of a cylindrical structure with a wide upper part and a narrow lower part, the upper end of the filter cylinder (222) is fixedly connected with the bottom of the outer ring of the partition board (221), and the lower end of the filter cylinder (222) is connected with the first sewage draining pipe (213) through a lower interface (223);
the overflow port is higher than the water distribution pipe (6), and the drainage port (16) and the drainage overflow pipe (7) are both lower than the water distribution pipe (6);
the diameter of the drainage pipe (17) is consistent with the diameter of the diversion hole (184), the diameter of the drainage pipe (17) is smaller than the diameter of the drainage port (16), and the diameter of the drainage pipe (17) is smaller than the diameter of the water distribution pipe (6);
one end of the water distribution pipe (6) positioned in the rainwater diversion chamber (13) is provided with a filter screen (19), and one end of the drainage port (16) positioned in the rainwater diversion chamber (13) is provided with the filter screen (19);
the upper end of the dirt interception well body (21) is provided with a checking opening, and the checking opening is provided with a dirt interception well cover (24); the dirt intercepting well cover (24) comprises a well cover body (241) with a plurality of through holes (242) at intervals, each through hole (242) is provided with a protrusion (243), each protrusion (243) is of a cambered surface structure, a cavity (244) is formed between each protrusion (243) and the well cover body (241), and the cavity (244) is communicated with the through hole (242); the bulge (243) is provided with a plurality of filtering holes communicated with the cavity (244) at intervals.
2. The sponge urban rainwater collection and purification treatment system according to claim 1, wherein: the PP module (35) is filled in the water storage sedimentation tank (3), one side of the interior of the water storage sedimentation tank (3) is provided with a water inlet well (31), and the other side of the interior of the water storage sedimentation tank (3) is provided with a lifting well (32); the upper end of the water inlet well (31) is provided with an opening, and the water outlet of the sewage interception water outlet pipe (212) extends into the water inlet well (31); a lifting pump (33) and a sewage pump (34) are arranged in the lifting well (32), and a water outlet of the lifting pump (33) and a water outlet of the sewage pump (34) are connected to the rainwater purification component (4); the water outlet of the sewage pump (34) is connected with a second sewage pipe (38) and extends to the outside of the lifting well (32).
3. The sponge urban rainwater collection and purification treatment system according to claim 1 or 2, characterized in that: the bottom of the water storage sedimentation tank (3) is provided with an anti-seepage reinforcing layer (36), the anti-seepage reinforcing layer (36) comprises an anti-seepage film layer (361), a fine sand cushion layer (363), a reinforced concrete bottom plate (364) and a concrete cushion layer (365) from top to bottom in sequence, and geotechnical cloth layers (362) are arranged around the anti-seepage film layer (361); the top of retaining sedimentation tank (3) be equipped with permeable layer (37), permeable layer (37) are fine sand bed course and geotechnique's cloth layer from top to bottom in proper order.
4. The sponge urban rainwater collection and purification treatment system according to claim 2, wherein: the rainwater purification assembly (4) comprises a filter (41) and a sterilizer (42); the water inlet of the filter (41) is provided with a water purifying pipe (43), and the water purifying pipe (43) is connected to the water outlet end of the lifting pump (33); a back flushing main pipe (44) is arranged on the water purifying pipe (43), a plurality of back flushing branch pipes (39) are distributed in the water storage sedimentation tank (3) at intervals, and the plurality of back flushing branch pipes (39) are connected to the back flushing main pipe (44); the drain outlet of the filter (41) is provided with a third drain pipe (45), and the second drain pipe (38) is converged to the third drain pipe (45); the water outlet of the filter (41) is connected with the water inlet of the sterilizer (42).
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| CN114892778B (en) * | 2022-04-28 | 2023-11-21 | 深圳市翠绿洲环境艺术有限公司 | Ecological drainage device based on rain impact resistance |
| CN115043536B (en) * | 2022-06-15 | 2024-05-28 | 千和建设集团有限公司 | Environment-friendly buried integrated equipment for collecting rainwater |
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