CN106045214B - Rainwater system for sponge urban building district and construction method thereof - Google Patents

Rainwater system for sponge urban building district and construction method thereof Download PDF

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Publication number
CN106045214B
CN106045214B CN201610565719.9A CN201610565719A CN106045214B CN 106045214 B CN106045214 B CN 106045214B CN 201610565719 A CN201610565719 A CN 201610565719A CN 106045214 B CN106045214 B CN 106045214B
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rainwater
well
distribution
overflow
pipe
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CN106045214A (en
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刘学应
刘东哲
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Zhejiang University of Water Resources and Electric Power
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Zhejiang University of Water Resources and Electric Power
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105Accessories, e.g. flow regulators or cleaning devices
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/14Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/22Adaptations of pumping plants for lifting sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001Runoff or storm water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention discloses a rainwater system for a sponge urban building district, which is characterized in that: including sedimentation tank, distribution well, processing pond and spillway well, the top of sedimentation tank is provided with the environmental protection inlet for stom water, and the sedimentation tank is connected with the distribution well through the inlet tube, is provided with the water intaking valve on the inlet tube, is provided with four at least distributing pipes on the left end face of distribution well, and the distribution well is connected with the processing pond through the distributing pipe, and the processing pond is connected with the spillway well through the overflow pipe, and this construction method includes following step: (1) construction preparation; (2) excavating a foundation pit; (3) treating a foundation; (4) establishing a sedimentation tank and a distribution well; (5) establishing a treatment tank and an overflow well; (6) laying a pipeline; 7) and (6) processing the ground. The rainwater collecting and processing device is simple in structure and strong in practicability, rainwater on the ground of a building community is collected and processed, the phenomenon of water accumulation on the ground of the community is effectively prevented, and waste of water resources can be reduced by collecting the rainwater.

Description

Rainwater system for sponge urban building district and construction method thereof
Technical Field
The invention relates to a rainwater system for a sponge urban building district and a construction method thereof.
Background
The sponge city is a new generation of urban rainfall flood management concept, and means that the city 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, and the international general term is 'low-impact development rainwater system construction'. The sponge city can absorb, store, seep water and purify water when raining, the stored water is released and utilized when needed, and the functions of absorbing, storing and slowly releasing rainwater are realized in buildings, districts, roads, squares, parks, greenbelts, water systems and the like through source emission reduction, process control, system management and the like, so that rainwater runoff is effectively controlled, and the effects of no water accumulation in small rain, no waterlogging in heavy rain, no black and odorous water and relief in heat islands are realized.
Sponge city construction should follow ecological priority principle etc. combines together natural way and artificial measures, under the prerequisite of guaranteeing urban drainage waterlogging prevention safety, furthest realizes that rainwater stores up, permeates and purifies in the urban area, promotes the utilization of rainwater resource and ecological environment protection. The construction of the sponge city is not a way of putting the weight down and replacing the traditional drainage system, but a way of reducing burden and supplementing the traditional drainage system, and the self effect of the city is exerted to the greatest extent. In the sponge city construction process, the systematicness of natural rainfall, surface water and underground water is planned, water recycling links such as water supply and drainage are coordinated, and the complexity and the long-term property of the links are considered. In recent years, sunken greenbelts, permeable ponds, wet ponds and the like are attracted attention and rapidly built, but due to the fact that the filler is relatively single, although infiltration of surface rainwater is accelerated to a certain degree, rainwater is difficult to store effectively, rainwater is not purified, rainwater is directly discharged into rivers without being treated, and the river is polluted to a certain extent.
Disclosure of Invention
The invention aims to provide a technical scheme of a rainwater system for a sponge urban building district and a construction method thereof aiming at the defects in the prior art, the rainwater on the ground of the building district is collected and treated, the water accumulation phenomenon on the ground of the district is effectively prevented, the waste of water resources can be reduced through the collection of the rainwater, and compared with the design of directly discharging the rainwater into soil and rivers, the rainwater can be prevented from polluting the soil and the rivers.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a rainwater system for sponge city building district which characterized in that: the system comprises a sedimentation tank, a distribution well, a treatment tank and an overflow well, wherein water level sensors are arranged in the sedimentation tank, the distribution well, the treatment tank and the overflow well, an environment-friendly rainwater inlet is arranged above the sedimentation tank and is communicated with the sedimentation tank through a diversion pipe, at least two inclined plates are uniformly arranged in the sedimentation tank, the sedimentation tank is connected with the distribution well through a water inlet pipe, a water inlet valve is arranged on the water inlet pipe, an adsorption layer is arranged on the inner side wall of the distribution well, at least four distribution pipes are arranged on the right end face of the distribution well, the distribution well is connected with the treatment tank through the distribution pipes, the treatment tank is connected with the overflow well through an overflow pipe, an overflow valve is arranged on the overflow pipe, the overflow well is; the design of the sedimentation tank can facilitate the collection and preliminary sedimentation of rainwater in earlier stage, the design of the inclined plate in the sedimentation tank can further improve the sedimentation effect of the rainwater in the sedimentation tank, the inclined plate has certain buffering effect on the rainwater, thereby accelerating the speed of particle sedimentation in the rainwater, increasing the effect of particle sedimentation, the inclined plate has low price, small occupied area, convenient installation and disassembly and cost saving, the design of the distribution well can facilitate the accumulation of the rainwater, the treatment effect of the rainwater in the treatment tank is controlled by controlling the opening number and the opening size of the control valves on the distribution pipe, and the adsorption layer on the inner side wall of the distribution well can absorb harmful substances, peculiar smell and the like in the rainwater, thereby further improving the quality after the rainwater treatment, the design of at least four distribution pipes can not only accelerate the rainwater treatment rate, but also can control the opening number of the control valves on the distribution pipes according to the actual rainwater treatment capacity, thereby the discharge rate of control rainwater, the design of environmental protection inlet for stom water not only can be convenient for to the collection of ground rainwater, and be connected between rainwater pipeline and the environmental protection inlet for stom water, thereby can accelerate the collection rate of rainwater, the design of honeycomb duct can further accelerate the speed of discharging down of rainwater, the project organization is more reasonable, the treatment tank can carry out certain processing to the rainwater, thereby make the rainwater after the processing can recycle, effective water economy resource, the spillway well can play certain reposition of redundant personnel effect.
Further, a trash blocking device is arranged in the environment-friendly gutter inlet and comprises a fixed frame and a filtering sieve plate, connecting holes are formed in four side walls of the fixed frame, catch hole covers are arranged on the connecting holes, the filtering sieve plate is located in the fixed frame, the trash blocking device can be designed to block thick floating objects, foreign matters, impurities and the like in rainwater on the ground, so that the trash blocking device is convenient to clean the impurities, but also can effectively prevent foreign matters, impurities and the like from entering the pipeline to cause the paralysis of the whole rainwater system, make the surface water of building district more, influence people's normal life, the design of fixed frame can be convenient for block dirty device's installation and spacing, also can be convenient for filter sieve's dismantlement and clearance, and the design of connecting hole can be convenient for be connected between secret rainwater pipeline system and the environmental protection inlet for stom water on the fixed frame to be convenient for the quick emission of rainwater.
The system further comprises a control system, the control system comprises a water storage controller, an overflow controller and a backflow controller, the water storage controller is connected with the water level sensor and the water inlet valve in the sedimentation tank, the overflow controller is connected with the water level sensor and the overflow valve in the treatment tank, the backflow controller is connected with the water level sensor and the backflow valve in the overflow well, the control system can be designed to facilitate the detection and control of the whole rainwater system, the rainwater collection rate of the rainwater collection system is guaranteed, meanwhile, the rainwater resource cannot be wasted, the water storage controller can be designed to detect and monitor the water level in the sedimentation tank, when the water level sensor detects that the water level in the sedimentation tank is too high, the valve block of the water inlet valve can be opened to the maximum state, so that the drainage rate of the sedimentation tank is accelerated, and the overflow controller can be designed to enable the water level in the treatment tank to reach the highest water level, when rainwater is continuously accumulated downwards, redundant rainwater is conveyed to an overflow well through an overflow pipe to play a certain shunting role, rainwater in the overflow well can be recycled through the design of a backflow controller, the rainwater amount in a treatment pool is not enough, the external temperature is too high, artificial lakes, flower beds and the like in building districts lack water sources, the overflow well conveys rainwater to the treatment pool again through a backflow pipe, the water sources are conveyed to the artificial lakes and the flower beds through a lift pump, the service of infrastructure of a building community is effectively guaranteed, the flow rate of rainwater backflow can be controlled through a backflow valve, and the use is more convenient and simple.
Furthermore, the distributing pipes are all provided with intercepting elbows, access holes and control valves, an oil collecting device is arranged below the intercepting elbows, a sealing cover plate is arranged on the access holes, the sealing cover plate is in threaded connection with the access holes, a sealing gasket is arranged at the joint of the sealing cover plate and the access holes, the oil stain in rainwater can be intercepted by the design of the intercepting elbows, so that the oil stain in the rainwater can be effectively removed, the quality of the rainwater after treatment is better, the later-stage reutilization of the rainwater is more convenient, the oil stain recovery treatment can be facilitated by the design of the oil collecting device, the distribution pipes can be regularly checked by maintainers by the design of the access holes, the sealing cover plate can be designed to prevent the rainwater from seeping outwards and prevent the diffusion of peculiar smell, the structural design is more reasonable, the use of the maintainers is more convenient, and the tightness of the connection between the sealing cover plate and the access holes can be further, effectively prevent that the junction from appearing not hard up, the delivery rate of distributing pipe can be controlled in the design of control valve to make the processing of whole rainwater scientific and reasonable more.
Further, a filtering grid, a sewage filtering cylinder and a biodegradable film are arranged in the treatment tank, the filtering grid, the sewage filtering cylinder and the biodegradable film are sequentially arranged in the treatment tank from left to right, the filtering grid comprises a first grid fence and a second grid fence, the design of the filtering grid can remove residual suspended matters, floating matters and the like in rainwater, the impurity content in the rainwater is less through the double filtering action of the first grid fence and the second grid fence, so that the treatment quality of the rainwater is improved, the design of the sewage filtering cylinder can further remove residual suspended solid particles, colloidal substances, turbidity, organic matters and the like in the rainwater, the water quality after the rainwater treatment is further improved, the design of the biodegradable film can effectively decompose harmful media in the rainwater, so that the harmful media are converted into useful substances, the utilization rate of the rainwater is improved, and the rainwater treatment effect is better, and compared with the treatment of directly degrading harmful substances in the rainwater by adopting natural precipitation, the treatment speed of the rainwater can be saved, thereby being more convenient for actual use.
Further, be provided with two at least lift pumps in the treatment tank, parallel connection between two lift pumps, the lift pump passes through conveyer pipe and artifical lake, the view fish pond, the flower bed communicates with each other, be provided with the control valve on the conveyer pipe, the lift pump, the control valve all is connected with overflow controller, the design of lift pump, can recycle the rainwater after handling, the rainwater after will handling through the lift pump is arranged in the basic building service of building district, the water resource has been practiced thrift greatly, more reasonable science of structural design, the maintenance frequency in later stage is reduced in the design of two at least lift pumps, another lift pump also can continue to work when one of them lift pump goes wrong.
The construction method for the rainwater system for the sponge city building community is characterized by comprising the following steps:
1) construction preparation:
firstly, a technician surveys a building district which is actually constructed, selects the ground with low topography as a rainwater system construction site, draws a drawing according to actual survey and measurement, sets up a construction indication board at a determined construction site, transports equipment used in construction to the construction site, uses a transport vehicle to transport materials for construction to the construction site, sets up a construction retaining wall at the construction site, and selects the lower topography as the rainwater system construction site, so that rainwater can be quickly collected into an underground rainwater system for treatment under the action of gravity, thereby accelerating the collection rate of rainwater on the ground;
2) excavation of a foundation pit:
excavating the foundation at the construction position by using an excavator until the depth of the foundation pit reaches 8-12 m, so that a rainwater system and a rainwater pipeline can be conveniently installed, then leveling the bottom surface of the foundation pit by using the excavator, transporting gravels into the foundation pit, compacting and flattening the gravels by using an excavator wheel, ensuring the flatness of the bottom surface of the foundation pit, leveling the bottom surface of the foundation pit by using the gravels, so that the framework of the whole rainwater system is relatively stable, the bottom surface is prevented from collapsing after the rainwater system is built, the structural design is more reasonable and scientific, and the actual construction requirements are better met;
3) foundation treatment:
a. measuring the specific size of the foundation pit by using a scale, determining the size of the laid geotextile according to the size of the foundation pit, cutting the geotextile by using a hook knife, laying the geotextile, inspecting and protecting the geotextile after the geotextile layer is laid, and ensuring that the laid surface of the geotextile is not damaged;
b. after the geotextile is laid, a layer of seepage-proofing sand is laid on the geotextile, and the seepage-proofing effect can be further improved by the design of the seepage-proofing sand;
4) establishing a sedimentation tank and a distribution well:
according to design drawings and the actually measured size of a foundation pit, the building positions of a sedimentation tank and a distribution water well are determined, the sedimentation tank and the distribution water well are installed in the foundation pit, the installation positions of an environment-friendly rainwater inlet and a rainwater pipeline are ensured to be reserved in the foundation pit when the sedimentation tank and the distribution water well are installed, inclined plates are installed in the sedimentation tank after the sedimentation tank is installed, the distance between each inclined plate is 20 cm, the distance between the two inclined plates is reasonably controlled, the particle sedimentation effect in rainwater is better, the two ends of each inclined plate are connected with the inner wall of the sedimentation tank, the installation firmness of the inclined plates is ensured, after the distribution water well is installed, an adsorption layer is uniformly coated on the inner side wall of the distribution water well, the thickness of the adsorption layer is ensured to be not less than 2 cm, and the design of the thickness of the adsorption layer can not cause waste of resources while the adsorption;
5) establishing a treatment tank and an overflow well:
a. after the sedimentation tank and the distribution water well are installed, a treatment tank is arranged on one side of the distribution water well, after the treatment tank is installed, the first grid fence, the second grid fence, the filter cartridges and the biodegradable film are sequentially installed in the filter tank from left to right, the interval between every two of the first grid fence, the second grid fence, the filter cartridges and the biodegradable film is ensured to be 30cm, two lifting pumps are arranged in the treatment tank and are connected in parallel, the lifting pumps can recycle the treated and pumped rainwater, and the use is more convenient;
b. after the treatment tank is installed, the overflow wells are installed, two overflow wells with the depth of 6-8 m are arranged at the positions 2m away from the treatment tank, the overflow wells can divide rainwater, and therefore rainwater in the treatment tank is prevented from overflowing and being wasted;
6) laying a pipeline:
a. connecting a sedimentation tank and a distribution well by a water inlet pipe with the diameter of 100mm, arranging a water inlet valve on the water inlet pipe, connecting the distribution well with a treatment tank by a distribution pipe with the diameter of 90mm, arranging an interception elbow pipe with the length of 15cm and the diameter of 90mm in the middle of the distribution pipe, sealing and welding the joint between the interception elbow pipe and the distribution pipe, ensuring the sealing performance, preventing water leakage, arranging a control valve and an inspection hole on the distribution pipe, connecting the overflow well with the treatment tank by an overflow pipe with the diameter of 70mm, arranging an overflow valve on the overflow pipe, connecting the overflow well with the treatment tank by a return pipe with the diameter of 70mm at the position 50mm below the overflow pipe, arranging a return valve on the return pipe, and controlling the diameters of the water inlet pipe, the distribution pipe, the overflow pipe and the return pipe, the pipeline of the rainwater system is effectively prevented from being blocked, the later maintenance cost is reduced, more impurities are in the rainwater before the rainwater is not treated, so the pipe diameter is relatively large, the pipeline is prevented from being blocked due to the smaller diameter of the pipeline, and the more the particles and the impurities in the rainwater are less, the smaller the pipe diameter is, the smaller the corresponding pipe diameter is;
b. after pipelines among the sedimentation tank, the distribution tank, the treatment tank and the overflow well are installed, a water pump in the treatment tank is communicated with the artificial lake, the landscape fishpond and the flower bed through a conveying pipe and is used for infrastructure service of a building community;
7) ground treatment:
and after the pipeline is laid, earth backfill operation is carried out, so that the installed sedimentation tank, the distribution water well, the treatment tank and the overflow well are firmly installed and are not easy to deform, the installation position of the environment-friendly rainwater inlet is reserved right above the sedimentation tank when backfilling is carried out, and after backfilling and tamping are carried out, permeable bricks are laid.
Further, in the step 5), after the overflow well is installed, water level sensors are installed inside the sedimentation tank, the distribution well, the treatment tank and the overflow well.
Further, in step 7), repairing the environmental-friendly rain inlet after the permeable bricks are laid, and then installing the dirt blocking device in the environmental-friendly rain inlet after the environmental-friendly rain inlet is repaired and leveled, and connecting the environmental-friendly rain inlet and the rain pipeline.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the design of the sedimentation tank can facilitate the collection and preliminary sedimentation of rainwater in the earlier stage, and the design of the inclined plate in the sedimentation tank can further improve the sedimentation effect of the rainwater in the sedimentation tank, and the inclined plate has a certain buffering effect on the rainwater, so that the speed of sedimentation of particles in the rainwater is increased, the effect of sedimentation of the particles is increased, and the inclined plate is low in price, small in occupied area, convenient to install and disassemble and capable of saving the cost;
2. the design of the filtering grid can remove residual suspended matters, floating matters and the like in rainwater, the impurity content in the rainwater is less through the double filtering action of the first grid fence and the second grid fence, so that the processing quality of the rainwater is improved, the design of the sewage filtering cylinder can further remove residual suspended matter solid particles, colloidal substances, turbidity, organic matters and the like in the rainwater, the water quality after the rainwater processing is further improved, the design of the biodegradable film can effectively decompose harmful media in the rainwater, so that the harmful media are converted into useful substances, the utilization rate of the rainwater is improved, the rainwater processing effect is better, and compared with the processing of directly degrading the harmful substances in the rainwater by adopting natural precipitation, the processing rate of the rainwater can be saved, so that the practical use is more convenient;
3. the lift pump, the control valve all is connected with the overflow control ware, and the design of lift pump can recycle the rainwater after handling, and the rainwater after will handling through the lift pump is arranged in the basic building service of building district, has practiced thrift the water resource greatly, and the more reasonable science of structural design, the maintenance frequency in later stage is reduced in the design of two at least lift pumps, and another lift pump also can continue work when one of them lift pump goes wrong.
The rainwater collecting device is simple in structure and strong in practicability, rainwater on the ground of the building community is collected and treated, the phenomenon of water accumulation on the ground of the community is effectively prevented, the waste of water resources can be reduced by collecting the rainwater, and compared with the design of directly discharging the rainwater into soil and rivers, the rainwater can be prevented from polluting the soil and the rivers.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a rainwater system for a sponge urban building district according to the present invention;
FIG. 2 is a schematic view showing the connection among the settling tank, the distribution well, the treatment tank and the overflow well according to the present invention
FIG. 3 is a schematic view of the structure of the trash holding device of the present invention;
FIG. 4 is an enlarged view of the structure at I in FIG. 1;
FIG. 5 is a schematic diagram of the control system of the present invention;
FIG. 6 is a construction flow chart of the present invention.
In the figure: 1-a sedimentation tank; 2-distributing water wells; 3-a treatment tank; 4-an overflow well; 5-a water level sensor; 6-environment-friendly gutter inlet; 7-a flow guide pipe; 8-sloping plate; 9-a water inlet pipe; 10-a water inlet valve; 11-an adsorption layer; 12-a distribution pipe; 13-an overflow pipe; 14-relief valves; 15-a return pipe; 16-a reflux valve; 17-a trash holding device; 18-a fixed frame; 19-filtering sieve plate; 20-connecting holes; 21-a baffle hole cover; 22-a control system; 23-a water storage controller; 24-an overflow controller; 25-a reflux controller; 26-intercepting a bent pipe; 27-access hole; 28-a control valve; 29-an oil collector; 30-sealing the cover plate; 31-a sealing gasket; 32-a first grid barrier; 33-a second grid barrier; 34-a dirt filtering cylinder; 35-a biodegradable film; 36-lift pump.
Detailed Description
As shown in fig. 1 to 5, the invention provides a rainwater system for sponge urban construction districts, which is characterized in that: the device comprises a sedimentation tank 1, a distribution well 2, a treatment tank 3 and an overflow well 4, wherein water level sensors 5 are arranged in the sedimentation tank 1, the distribution well 2, the treatment tank 3 and the overflow well 4, an environment-friendly gutter inlet 6 is arranged above the sedimentation tank 1, a dirt blocking device 17 is arranged in the environment-friendly gutter inlet 6, the dirt blocking device 17 comprises a fixing frame 18 and a filtering sieve plate 19, connecting holes 20 are arranged on four side walls of the fixing frame 18, baffle holes 21 are arranged on the connecting holes 20, the filtering sieve plate 19 is positioned in the fixing frame 18, the dirt blocking device 17 is designed to block thick floaters, foreign matters and impurities in rainwater on the ground, so that not only can the impurities be conveniently cleaned, but also the impurities and the like can be effectively prevented from entering a pipeline to cause paralysis of the whole rainwater system, the water accumulation on the ground of a small building area is more, the normal life of people is influenced, the fixing frame 18 can be convenient to install and limit the, also can be convenient for filter sieve 19's dismantlement and clearance, the design of connecting hole 20 on fixed frame 18 can be convenient for be connected between secret rainwater pipeline system and the environmental protection inlet for stom water 6, thereby be convenient for the quick emission of rainwater, environmental protection inlet for stom water 6 communicates with each other through honeycomb duct 7 and sedimentation tank 1, the collection to ground rainwater not only can be convenient for to the design of environmental protection inlet for stom water 6, and be connected through between rainwater pipeline and the environmental protection inlet for stom water 6, thereby can accelerate the collection rate of rainwater, the lower rate of arranging of rainwater can further be accelerated in the design of honeycomb duct 7, the project organization is more reasonable.
Evenly be provided with two at least swash plates 8 in the sedimentation tank 1, the design of sedimentation tank 1 can be convenient for earlier stage rainwater collection and preliminary sedimentation, and the design of swash plate 8 can further improve the precipitation effect of rainwater at sedimentation tank 1 in the sedimentation tank 1, play certain buffering effect to the rainwater through swash plate 8, thereby the speed of granule sedimentation in the rainwater has been accelerated, the effect of granule sedimentation has been increased, and the low price of swash plate 8, area is little, convenient to install and dismantle, the cost is saved, sedimentation tank 1 is connected with distribution well 2 through inlet tube 9, be provided with water intaking valve 10 on the inlet tube 9.
The inner side wall of the distribution well 2 is provided with an adsorption layer 11, the right end face of the distribution well 2 is provided with at least four distribution pipes 12, each distribution pipe 12 is provided with an interception elbow 26, an access opening 27 and a control valve 28, an oil collecting device 29 is arranged below the interception elbow 26, the access opening 27 is provided with a sealing cover plate 30, the sealing cover plate 30 is in threaded connection with the access opening 27, a sealing gasket 31 is arranged at the joint of the sealing cover plate 30 and the access opening 27, the interception elbow 26 is designed to intercept oil stains in rainwater, so that the oil stains in the rainwater are effectively removed, the quality of the treated rainwater is better, the rainwater can be conveniently recycled in the later period, the oil stains can be conveniently recovered and treated by the design of the oil collecting device 29, the access opening 27 can be conveniently inspected by maintainers to the distribution pipes 12 regularly, the sealing cover plate 30 can be designed to prevent rainwater from seeping out, the sealing gasket 31 can further improve the connection tightness between the sealing cover plate 30 and the access hole 27, effectively prevent the looseness of the connection part, the control valve 28 can control the conveying speed of the distribution pipe 12, thereby leading the treatment of the whole rainwater to be more scientific and reasonable, the distribution well 2 can be designed to facilitate the accumulation of the rainwater, the treatment effect of the rainwater in the treatment pool 3 can be controlled by controlling the opening number and the opening size of the control valve 28 on the distribution pipe 12, and the adsorption layer 11 on the inner side wall of the distribution well 2 can absorb harmful substances, peculiar smell and the like in the rainwater, thereby further improving the quality of the rainwater after treatment, the design of at least four distribution pipes 12 can not only accelerate the rainwater treatment speed, but also can control the opening number of the control valves 28 on the distribution pipes 12 according to the actual rainwater treatment capacity, thereby controlling the discharge rate of rainwater, and the distribution well 2 is connected with the treating tank 3 through the distribution pipe 12.
The treatment pool 3 is internally provided with a filtering grid, a sewage filtering cylinder 34 and a biodegradable film 35, the filtering grid, the sewage filtering cylinder 34 and the biodegradable film 35 are sequentially arranged in the treatment pool 3 from left to right, the filtering grid comprises a first grid fence 32 and a second grid fence 33, the filtering grid is designed to remove residual suspended matters, floating matters and the like in rainwater, the impurity content in the rainwater is reduced through the double filtering action of the first grid fence 32 and the second grid fence 33, so that the treatment quality of the rainwater is improved, the design of the sewage filtering cylinder 34 can further remove residual suspended solid particles, colloidal substances, turbidity, organic matters and the like in the rainwater, the water quality after the rainwater treatment is further improved, the design of the biodegradable film 35 can effectively decompose harmful media in the rainwater, so that the harmful media are converted into useful substances, the utilization rate of the rainwater is improved, and the rainwater treatment effect is better, compared with the treatment of degrading harmful substances in the rainwater by directly adopting natural precipitation, the treatment speed of the rainwater can be saved, so that the rainwater treatment device is more convenient to use practically, at least two lift pumps 36 are arranged in the treatment tank 3, the two lift pumps 36 are connected in parallel, the lift pumps 36 are communicated with artificial lakes, landscape fish ponds and flower beds through delivery pipes, control valves 28 are arranged on the delivery pipes, the lift pumps 36 and the control valves 28 are connected with an overflow controller 24, the design of the lift pumps 36 can recycle the treated rainwater, the treated rainwater is used for basic building services of building districts through the lift pumps 36, water resources are greatly saved, the structural design is more reasonable and scientific, the later maintenance frequency is reduced due to the design of the at least two lift pumps 36, and when one of the lift pumps 36 goes wrong, the other lift pump 36 can also continue to work, the treatment pool 3 is connected with the overflow well 4 through the overflow pipe 13, the overflow pipe 13 is provided with the overflow valve 14, the overflow well 4 is connected with the treatment pool 3 through the return pipe 15, the return pipe 15 is provided with the return valve 16, the treatment pool 3 can carry out certain treatment on rainwater, so that the treated rainwater can be reused, water resources are effectively saved, and the overflow well 4 can play a certain shunting role.
The system also comprises a control system 22, the control system 22 comprises a water storage controller 23, an overflow controller 24 and a backflow controller 25, the water storage controller 23 is connected with the water level sensor 5 and the water inlet valve 10 in the sedimentation tank 1, the overflow controller 24 is connected with the water level sensor 5 and the overflow valve 14 in the treatment tank 3, the backflow controller 25 is connected with the water level sensor 5 and the backflow valve 16 in the overflow well 4, the control system 22 can be designed to facilitate the detection and control of the whole rainwater system, the rainwater collecting rate of the rainwater collecting system is guaranteed, the waste of rainwater resources is avoided, the water storage controller 23 can be designed to detect and monitor the water level in the sedimentation tank 1, when the water level sensor 5 detects that the water level in the sedimentation tank 1 is too high, the valve plate of the water inlet valve 10 can be opened to the maximum state, so that the drainage rate of the sedimentation tank 1 is accelerated, the design of overflow control ware 24 can be when the water level in treatment tank 3 reaches the highest water level, when the rainwater is constantly gathered down again, carry unnecessary rainwater in overflow well 4 through overflow pipe 13, play certain reposition of redundant personnel effect, the design of reflux control ware 25 can be to the rainwater in overflow well 4 recycling, the rainwater volume in treatment tank 3 is not enough, and the ambient temperature is too high, when artifical lake in the building district, flower bed etc. lack the water source, overflow well 4 carries the rainwater in treatment tank 3 again through back flow 15, rethread lift pump 36 carries the water source to artifical lake, in the flower bed, the service of the infrastructure of building community has effectively been ensured, the velocity of flow size of rainwater backward flow can be controlled to return valve 16, it is more convenient simple to use.
The construction method adopting the rainwater system for the sponge city building community as shown in fig. 6 comprises the following steps:
1) construction preparation:
firstly, a technician surveys a building district which is actually constructed, selects the ground with low topography as a rainwater system construction site, draws a drawing according to actual survey and measurement, sets up a construction indication board at a determined construction site, transports equipment used in construction to the construction site, uses a transport vehicle to transport materials for construction to the construction site, sets up a construction retaining wall at the construction site, and selects the lower topography as the rainwater system construction site, so that rainwater can be quickly collected into an underground rainwater system for treatment under the action of gravity, thereby accelerating the collection rate of rainwater on the ground;
2) excavation of a foundation pit:
excavating the foundation at the construction position by using an excavator until the depth of the foundation pit reaches 8-12 m, so that a rainwater system and a rainwater pipeline can be conveniently installed, then leveling the bottom surface of the foundation pit by using the excavator, transporting gravels into the foundation pit, compacting and flattening the gravels by using an excavator wheel, ensuring the flatness of the bottom surface of the foundation pit, leveling the bottom surface of the foundation pit by using the gravels, so that the framework of the whole rainwater system is relatively stable, the bottom surface is prevented from collapsing after the rainwater system is built, the structural design is more reasonable and scientific, and the actual construction requirements are better met;
3) preparation of fine-grained concrete material:
a. measuring the specific size of the foundation pit by using a scale, determining the size of the laid geotextile according to the size of the foundation pit, cutting the geotextile by using a hook knife, laying the geotextile, inspecting and protecting the geotextile after the geotextile layer is laid, and ensuring that the laid surface of the geotextile is not damaged;
b. after the geotextile is laid, a layer of seepage-proofing sand is laid on the geotextile, and the seepage-proofing effect can be further improved by the design of the seepage-proofing sand;
4) establishing a sedimentation tank and a distribution well:
according to design drawings and the actually measured size of a foundation pit, the building positions of a sedimentation tank and a distribution water well are determined, the sedimentation tank and the distribution water well are installed in the foundation pit, the installation positions of an environment-friendly rainwater inlet and a rainwater pipeline are ensured to be reserved in the foundation pit when the sedimentation tank and the distribution water well are installed, inclined plates are installed in the sedimentation tank after the sedimentation tank is installed, the distance between each inclined plate is 20 cm, the distance between the two inclined plates is reasonably controlled, the particle sedimentation effect in rainwater is better, the two ends of each inclined plate are connected with the inner wall of the sedimentation tank, the installation firmness of the inclined plates is ensured, after the distribution water well is installed, an adsorption layer is uniformly coated on the inner side wall of the distribution water well, the thickness of the adsorption layer is ensured to be not less than 2 cm, and the design of the thickness of the adsorption layer can not cause waste of resources while the adsorption;
5) establishing a treatment tank and an overflow well:
a. after the sedimentation tank and the distribution water well are installed, a treatment tank is arranged on one side of the distribution water well, after the treatment tank is installed, the first grid fence, the second grid fence, the filter cartridges and the biodegradable film are sequentially installed in the filter tank from left to right, the interval between every two of the first grid fence, the second grid fence, the filter cartridges and the biodegradable film is ensured to be 30cm, two lifting pumps are arranged in the treatment tank and are connected in parallel, the lifting pumps can recycle the treated and pumped rainwater, and the use is more convenient;
b. after the treatment tank is installed, installing overflow wells, arranging two overflow wells with the depth of 6-8 m at the position 2m away from the treatment tank, and after the overflow wells are installed, installing water level sensors in the sedimentation tank, the distribution water well, the treatment tank and the overflow wells, wherein the overflow wells can shunt rainwater, so that the rainwater in the treatment tank is prevented from overflowing and wasting resources due to more rainwater;
6) laying a pipeline:
a. connecting a sedimentation tank and a distribution well by a water inlet pipe with the diameter of 100mm, arranging a water inlet valve on the water inlet pipe, connecting the distribution well with a treatment tank by a distribution pipe with the diameter of 90mm, arranging an interception elbow pipe with the length of 15cm and the diameter of 90mm in the middle of the distribution pipe, sealing and welding the joint between the interception elbow pipe and the distribution pipe, ensuring the sealing performance, preventing water leakage, arranging a control valve and an inspection hole on the distribution pipe, connecting the overflow well with the treatment tank by an overflow pipe with the diameter of 70mm, arranging an overflow valve on the overflow pipe, connecting the overflow well with the treatment tank by a return pipe with the diameter of 70mm at the position 50mm below the overflow pipe, arranging a return valve on the return pipe, and controlling the diameters of the water inlet pipe, the distribution pipe, the overflow pipe and the return pipe, the pipeline of the rainwater system is effectively prevented from being blocked, the later maintenance cost is reduced, more impurities are in the rainwater before the rainwater is not treated, so the pipe diameter is relatively large, the pipeline is prevented from being blocked due to the smaller diameter of the pipeline, and the more the particles and the impurities in the rainwater are less, the smaller the pipe diameter is, the smaller the corresponding pipe diameter is;
b. after pipelines among the sedimentation tank, the distribution tank, the treatment tank and the overflow well are installed, a water pump in the treatment tank is communicated with the artificial lake, the landscape fishpond and the flower bed through a conveying pipe and is used for infrastructure service of a building community;
7) ground treatment:
after the pipeline is laid, earth backfill operation is carried out, so that the installation of the sedimentation tank, the distribution water well, the treatment tank and the overflow well is firm, and is not easy to deform, when backfilling, an installation position of the environment-friendly rainwater inlet is reserved right above the sedimentation tank, after backfilling and tamping are carried out, paving of the infiltration brick is carried out, after the infiltration brick is paved, repairing of the environment-friendly rainwater inlet is carried out, after repairing and leveling of the environment-friendly rainwater inlet, the sewage blocking device is installed in the environment-friendly rainwater inlet, and the environment-friendly rainwater inlet and the rainwater pipeline are connected.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.

Claims (6)

1. The utility model provides a rainwater system for sponge city building district which characterized in that: the device comprises a sedimentation tank, a distribution well, a treatment tank and an overflow well, wherein water level sensors are arranged in the sedimentation tank, the distribution well, the treatment tank and the overflow well, an environment-friendly gutter inlet is arranged above the sedimentation tank, a trash blocking device is arranged in the environment-friendly gutter inlet and comprises a fixed frame and a filtering sieve plate, connecting holes are arranged on four side walls of the fixed frame, blocking holes are arranged on the connecting holes, the filtering sieve plate is positioned in the fixed frame, the environment-friendly gutter inlet is communicated with the sedimentation tank through a guide pipe, at least two inclined plates are uniformly arranged in the sedimentation tank, the sedimentation tank is connected with the distribution well through a water inlet pipe, a water inlet valve is arranged on the water inlet pipe, an adsorption layer is arranged on the inner side wall of the distribution well, and at least four distribution pipes are arranged on the right end face of the distribution, the distribution well is connected with the treatment pool through the distribution pipe, the distribution pipe is provided with an interception elbow pipe, an access hole and a control valve, an oil collecting device is arranged below the interception elbow pipe, the access hole is provided with a sealing cover plate, the sealing cover plate is in threaded connection with the access hole, a sealing gasket is arranged at the connection part of the sealing cover plate and the access hole, the treatment pool is connected with the overflow well through an overflow pipe, the overflow pipe is provided with an overflow valve, the overflow well is connected with the treatment pool through a return pipe, and the return pipe is provided with a return valve; the system is characterized by further comprising a control system, wherein the control system comprises a water storage controller, an overflow controller and a backflow controller, the water storage controller is connected with the water level sensor and the water inlet valve in the sedimentation tank, the overflow controller is connected with the water level sensor and the overflow valve in the treatment tank, and the backflow controller is connected with the water level sensor and the backflow valve in the overflow well.
2. A rainwater system for sponge urban building districts according to claim 1, characterized in that: be provided with in the treatment tank and filter the grid, strain dirty section of thick bamboo and biodegradable plastic film, filter the grid strain dirty section of thick bamboo with biodegradable plastic film from left to right sets gradually in the treatment tank, it includes first check fence and second check fence to filter the grid.
3. A rainwater system for sponge urban building districts according to claim 1, characterized in that: the treatment tank is internally provided with at least two lift pumps which are connected in parallel, the lift pumps are communicated with an artificial lake, a landscape fish pond and a flower bed through conveying pipes, the conveying pipes are provided with control valves, and the lift pumps and the control valves are connected with the overflow controller.
4. A method of constructing a storm water system for sponge urban construction districts as claimed in claim 1, characterized by comprising the steps of:
1) construction preparation:
firstly, surveying a building district which is actually constructed by technicians, selecting the ground with low topography as a rainwater system construction site, drawing a drawing by the technicians according to the actual survey and measurement, erecting a construction indication board at a determined construction site, transporting equipment used in construction to the construction site by the constructor, transporting materials used for construction to the construction site by using a transport vehicle, and erecting a construction retaining wall at the construction site by the constructor;
2) excavation of a foundation pit:
excavating the foundation at the construction position by using an excavator until the depth of the foundation pit reaches 8-12 m, so that a rainwater system and a rainwater pipeline can be conveniently installed, leveling the bottom surface of the foundation pit by using the excavator, transporting the gravel into the foundation pit, compacting and flattening the gravel by using an excavator wheel, and ensuring the flatness of the bottom surface of the foundation pit;
3) foundation treatment:
a. measuring the specific size of the foundation pit by using a ruler, determining the size of the laid geotextile according to the size of the foundation pit, cutting the geotextile by using a hook knife, laying the geotextile, and inspecting and protecting the geotextile after the geotextile layer is laid, so as to ensure that the laid surface of the geotextile is not damaged;
b. after the geotextile is laid, a layer of impermeable sand is laid on the geotextile;
4) establishing a sedimentation tank and a distribution well:
determining the building positions of a sedimentation tank and a distribution well according to a design drawing and the actually measured foundation pit size, mounting the sedimentation tank and the distribution well in the foundation pit, ensuring that the environment-friendly rainwater port and the rainwater pipeline are reserved in the foundation pit when the sedimentation tank and the distribution well are mounted, mounting inclined plates in the sedimentation tank after the sedimentation tank is mounted, wherein the interval between each inclined plate is 20 cm, connecting the two ends of each inclined plate with the inner wall of the sedimentation tank, ensuring the mounting firmness of the inclined plates, and uniformly coating an adsorption layer on the inner side wall of the distribution well after the distribution well is mounted, so as to ensure that the thickness of the adsorption layer is not less than 2 cm;
5) establishing a treatment tank and an overflow well:
a. after the sedimentation tank and the distribution water well are installed, a treatment tank is arranged on one side of the distribution water well, after the treatment tank is installed, the first grid fence, the second grid fence, the filter cartridge and the biodegradable film are sequentially installed in the filter tank from left to right, the interval between every two of the first grid fence, the second grid fence, the filter cartridge and the biodegradable film is ensured to be 30cm, two lifting pumps are arranged in the treatment tank, and the two lifting pumps are connected in parallel;
b. after the treatment tank is installed, installing an overflow well, and arranging two overflow wells with the depth of 6-8 m at a position 2m away from the treatment tank;
6) laying a pipeline:
a. connecting a sedimentation tank and a distribution well by using a water inlet pipe with the diameter of 100mm, arranging a water inlet valve on the water inlet pipe, connecting the distribution well with a treatment tank by using a distribution pipe with the diameter of 90mm, arranging an intercepting elbow pipe with the length of 15cm and the diameter of 90mm in the middle of the distribution pipe, sealing and welding the joint between the intercepting elbow pipe and the distribution pipe, ensuring the sealing performance, preventing the water leakage phenomenon, arranging a control valve and an inspection hole on the distribution pipe, connecting the overflow well with the treatment tank by using an overflow pipe with the diameter of 70mm, arranging an overflow valve on the overflow pipe, connecting the overflow well with the treatment tank by using a return pipe with the diameter of 70mm at the position 50mm below the overflow pipe, and arranging a return valve on the return pipe;
b. after pipelines among the sedimentation tank, the distribution tank, the treatment tank and the overflow well are installed, a water pump in the treatment tank is communicated with the artificial lake, the landscape fishpond and the flower bed through a conveying pipe and is used for infrastructure service of a building community;
7) ground treatment:
and after the pipeline is laid, earth backfill operation is carried out, so that the installed sedimentation tank, the distribution water well, the treatment tank and the overflow well are firmly installed and are not easy to deform, the installation position of the environment-friendly rainwater inlet is reserved right above the sedimentation tank when backfilling is carried out, and after backfilling and tamping are carried out, permeable bricks are laid.
5. The construction method of the rainwater system for the sponge city building district as claimed in claim 4, wherein: in the step 5), after the overflow well is installed, water level sensors are installed in the sedimentation tank, the distribution well, the treatment tank and the overflow well.
6. The construction method of the rainwater system for the sponge city building district as claimed in claim 4, wherein: in the step 7), repairing the environmental-friendly rain inlet after the permeable bricks are laid, then installing the dirt blocking device in the environmental-friendly rain inlet after the environmental-friendly rain inlet is repaired and leveled, and connecting the environmental-friendly rain inlet and the rain pipeline.
CN201610565719.9A 2016-07-18 2016-07-18 Rainwater system for sponge urban building district and construction method thereof Active CN106045214B (en)

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CN106638917B (en) * 2016-12-02 2020-03-17 浙江同济科技职业学院 Split type rainwater recycling, storing and adjusting system and construction method thereof
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CN106758799B (en) * 2016-12-13 2019-09-17 浙江水利水电学院 System for reclaiming rainwater and its construction method for sponge urban interchange
CN107447807B (en) * 2017-08-02 2020-11-13 诸暨市派特智能科技有限公司 Underground rainwater collection system and construction method thereof
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