CN105800810A - Low-effect treatment method of good-quality rainwater - Google Patents
Low-effect treatment method of good-quality rainwater Download PDFInfo
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- CN105800810A CN105800810A CN201610225980.4A CN201610225980A CN105800810A CN 105800810 A CN105800810 A CN 105800810A CN 201610225980 A CN201610225980 A CN 201610225980A CN 105800810 A CN105800810 A CN 105800810A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
- E03B1/041—Greywater supply systems
- E03B2001/047—Greywater supply systems using rainwater
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a low-effect treatment method of good-quality rainwater. For rainwater with the surface runoff TSS smaller than 200 mg/l, one or more rainwater treatment methods and devices are selected from rainwater treatment methods and devices for water treatment according to sizes of suspended particulate matters in the surface runoff of the rainwater; one or more rainwater amount control methods are selected from rainwater amount control methods according to the control rate of the surface runoff of the rainwater; the rainwater treatment and control devices are combined to form a low-effect rainwater development system. According to the method, water treatment measures can be taken in a targeted manner according to incoming water quality, meanwhile, process links in the water treatment process are designed according to the sizes of particulate matters of pollutants in the rainwater runoff, finally, the treated rainwater is regulated, stored, infiltrated or recycled in a targeted manner, so that the long-term operation efficiency of the system is guaranteed, and the long-term maintenance requirement of the system can be reduced.
Description
Technical field
The present invention relates to a kind of low impact exploitation rainwater governing system, belong to rainwater and administer and control technical field, particularly relating to a kind of good the low of water quality rainwater affects administering method.
Background technology
Utilize the technology of low impact exploitation to carry out the important idea that rainwater improvement is sponge urban construction.Low affect development technique system, the target call according to common rainwater treatment, in conjunction with common Rainwater Quality water yield situation, from the source of rainfall runoff, to transmitting procedure, until rainwater discharge or reuse terminal, rainwater is administered the system flow that control design case is special.System flow set up process, not only taken into full account the effect of each node infrastructure, efficiency and characteristic in system, integrated artistic flow process carried out system effectiveness accounting simultaneously, with ensure system improve and high efficiency.For the region that hardened ground area is less, such as park, ecological preservation area, and greenery patches district on a large scale, owing to flow of the people and vehicle flowrate are few, ground pollutant can be fewer than the ground pollutant of other types.In rainfall, the rainwash collected from these regions generally only carries a small amount of silt and pollutant.Little according to these localized ground runoff pollutions, the feature that afforestation is good, to there is difference technological means design team targetedly one total system of synthesis, oligosaprobic rainwater is carried out systematic water treatment and rainfall is regulated and stored control, not only integrated artistic flow process can be carried out system effectiveness accounting, to ensure improving and high efficiency of system, more can give full play to the technical role of each technique in system simultaneously, improve the operational efficiency of each technique, in minimizing system, the maintenance requirement of each technique, is conducive to pinpointing the problems in time and solution problem.Technological process for the design in these low stain districts not only should meet the technology requirement that rainwater treatment controls, simultaneously need to the original Greening Design taken into account in region and environmental beauty requirement.
Summary of the invention
For the defect that above-mentioned prior art exists, the technical problem to be solved in the present invention is to provide a kind of good the low of water quality rainwater affects administering method, and it can provide processing technological flow and the systematic measures of efficient science for pollutant load less surface rain runoff.
For solving above-mentioned technical problem, present invention employs the low of such a good water quality rainwater affects administering method, the determination of it determination including Rainwater Quality processing method and device and rainwater water quantity control method and device；Described Rainwater Quality processing method includes the physics initial gross separation method for filtering the large granule thing in rainwater, for filtering natural sedimentation and the waterpower partition method of bulky grain thing in rainwater and middle fine particle, for filtering the microparticle physical filtering method of the fine particle in rainwater；Described rainwater water quantity control method includes storing recycle method, underground is oozed to row's method outside method and flow control of regulating and storing；General water quality rainwater is defined as the rainwater that surface rain runoff is TSS < 200mg/l；Select one or more water treatment methods and device that rainwater is carried out water treatment according to suspended particulate substance size in the rainwash of rainwater from described Rainwater Quality processing method and device；In rainwash, contained suspended particulate substance dimension reference standard is as follows: be large granule thing when the particle diameter of the suspended particulate substance in described rainwash is more than 5000 microns；It is bulky grain thing when the particle diameter of the suspended particulate substance in described rainwash is simultaneously greater than 100 microns less than 5000 microns；When in described rainwash, the particle diameter of suspended particulate substance is middle fine particle when being simultaneously greater than 25 microns less than 100 microns；It is fine particle when the particle diameter of the suspended particulate substance in described rainwash is simultaneously greater than 1 micron less than 25 microns；It is colloidal substance when the particle diameter of the suspended particulate substance in described rainwash is less than 1 micron；Rainwash control rate according to rainwater selects one or more rainwater water quantity control methods from described rainwater water quantity control method.
In a kind of preferred embodiment of the present invention, described physics initial gross separation method is the large granule thing that the physical property according to the large granule thing in rainwater utilizes in physical action separation rainwater；Described large granule thing includes floating thing or float or fall-out sediment.
In a kind of preferred embodiment of the present invention, drainage bucket that the contaminant separation device that described physics initial gross separation method adopts includes being arranged on storm-water system inlet for stom water or drainage cloth bag or filter screen or scum silica frost barricade.
In a kind of preferred embodiment of the present invention, described natural sedimentation is to utilize the sediment deposition district within storm-water system to make the precipitate and separate from rainwater under gravity of the bulky grain thing in rainwater.
In a kind of preferred embodiment of the present invention, described waterpower partition method is to make the middle fine particle in rainwater realize separating under different movement rates and settling rate by different hydraulics.
In a kind of preferred embodiment of the present invention, the contaminant separation device that described waterpower partition method adopts includes rainwater treatment pond；It is provided with one or more waterpower separately positioned in described rainwater treatment pond；Described waterpower is separately positioned includes waterpower particle separation filter screen or waterpower particle separation eddy flow dividing plate or waterpower particle separation baffle plate or hydrocyclone.
In a kind of preferred embodiment of the present invention, described microparticle physical filtering method is that the fine particle utilizing cylinder filter or multistage rainwater treatment pond or biofilter to dam in rainwater is so that it separates from rainwater.
In a kind of preferred embodiment of the present invention, described rainwater water volume control device includes cistern or rainwater delaying basin module；Described rainwater delaying basin module includes infiltration type rainwater delaying basin module and impermeable formula rainwater delaying basin module.
In a kind of preferred embodiment of the present invention, it is the rainwater of TSS < 200mg/l for surface rain runoff；Low impact exploitation storm-water system arbitrarily selects a kind of large granule thing for filtering rainwash from the contaminant separation device that physics initial gross separation method adopts；Adopt the biofilter fine particle for filtering in rainwash；；Arbitrarily select a kind of for rainwater water rate control from two kinds of rainwater water volume control devices.
In a kind of preferred embodiment of the present invention, described biofilter is enhancement mode Rain Garden；Described enhancement mode Rain Garden includes the process pond of water inlet pipe and outlet pipe；Upper end, described process pond is provided with dismountable cover plate；Described cover plate is provided with and is available for the through hole that trees pass through；Bottom, described process pond is covered with gravel；It is filled with Biomedia above described gravel；Described Biomedia is internally provided with vertically arranged overflow pipe and horizontally disposed collecting pipe；Described overflow pipe connects with described collecting pipe；Described overflow pipe upper end is provided with filter screen；Also plant in described Biomedia and be implanted with trees；The upper end of described Biomedia is provided with riprap.
When affecting the low impact exploitation rainwater governing system of administering method design with the present invention good water quality rainwater low, it is possible to according to the Water quality processing system that the combination composition of the Rainwater Quality water yield under varying environment well different choose any one kind of them from four kinds of Rainwater Quality processing methods method or multiple method is concrete；Can choose any one kind of them in three kinds of rainwater water quantity control methods the concrete water yield control system of the combination composition of method or multiple method according to the difference of project rainwater management goal and specific environment；And for the concrete condition of different cities varying environment, from four kinds of Rainwater Quality processing methods and/or three kinds of any random combines of rainwater water quantity control method, then can choose suitable concrete rainwater treatment and control equipment in corresponding equipment according to corresponding method thus forming low impact exploitation storm-water system.
The invention has the beneficial effects as follows: the present invention according to influent quality, can take water treatment measure targetedly；Each process procedure in water treatment flow process is according to the granular size design of pollutant in rainfall runoff simultaneously, sets about from bulky grain thing, then processes small particles, finally processes the subparticle in water；Rainwater, after water treatment, is just regulated and stored, under ooze, or reuse, so not only can guarantee that the longtime running efficiency of system, it is also possible to reduce the long term maintenance requirement of system.
Accompanying drawing explanation
Fig. 1 is the rainwater purification processes flow chart that a kind of good water quality rainwater of the present invention low affects that relatively good for Rainwater Quality in administering method, the less rainwash containing quantity of sand and mud is taked；
Fig. 2 is the position view of drainage bucket when adopting floating thing physics initial gross separation method that a kind of good water quality rainwater of the present invention low affects administering method；
Fig. 3 is the position view of drainage cloth bag when adopting floating thing physics initial gross separation method that a kind of good water quality rainwater of the present invention low affects administering method；
Fig. 4 is the position view of filter screen when adopting floating thing physics initial gross separation method that a kind of good water quality rainwater of the present invention low affects administering method；
Fig. 5 is the position view of filter screen and scum silica frost barricade when adopting floating thing physics initial gross separation method that a kind of good water quality rainwater of the present invention low affects administering method；
Fig. 6 is sediment deposition zone position schematic diagram when adopting natural sedimentation that a kind of good water quality rainwater of the present invention low affects administering method；
Fig. 7 is the filter screen waterpower particle separator structural representation of the low waterpower partition method employing affecting administering method of a kind of good water quality rainwater of the present invention；
Fig. 8 is the eddy flow dividing plate waterpower particle separator structural representation of the low waterpower partition method employing affecting administering method of a kind of good water quality rainwater of the present invention；
Fig. 9 is the baffle-type waterpower particle separator structural representation of the low waterpower partition method employing affecting administering method of a kind of good water quality rainwater of the present invention；
Figure 10 is the hydrocyclone structural representation of the low waterpower partition method employing affecting administering method of a kind of good water quality rainwater of the present invention；
Figure 11 is the multistage rainwater treatment pool structure schematic diagram of the low middle microparticle physical filtering method employing affecting administering method of a kind of good water quality rainwater of the present invention；
Figure 12 is the enhancement mode Rain Garden structural representation of the low middle microparticle physical filtering method employing affecting administering method of a kind of good water quality rainwater of the present invention；
Figure 13 is the reservoir structure schematic diagram of the low rainwater water volume control device affecting administering method of a kind of good water quality rainwater of the present invention；
Figure 14 is the rainwater delaying basin structural representation of the low rainwater water volume control device affecting administering method of a kind of good water quality rainwater of the present invention；
Figure 15 is the schematic diagram of the desirable particle size of pollutant common in the low rainwater affecting administering method of a kind of good water quality rainwater of the present invention；
In figure: 1-drainage bucket；2-drainage cloth bag；3-filter screen；4-scum silica frost barricade；5-sediment deposition district；1a-water inlet pipe；2a-outlet pipe；3a-well body；4a-well lid；5a-barricade；6a-baffle plate；7a-screen frame；8a-medium frame；9a-waterpower particle separation filter screen；1b-water inlet pipe；2b-outlet pipe；3b-well body；4b-well lid；5b-barricade；6b-low discharge exports；The big flow overfall of 7b-；8b-waterpower particle separation eddy flow dividing plate；1c-water inlet pipe；2c-outlet pipe；3c-well body；4c-well lid；5c-barricade；6c-scum silica frost barricade；7c-waterpower particle separation baffle plate；8c-support；9c-porous disc；1d-water inlet pipe；2d-outlet pipe；3d-well body；4d-well lid；5d-hydrocyclone；6d-filter screen；1e-water inlet pipe；2e-outlet pipe；3e-processes pond；4e-overhauls entrance；5e-fixes barricade；6e-overflow barricade；7e-cylinder filter；8e-drain pipe；1f-water inlet pipe；2f-outlet pipe；3f-processes pond；4f-cover plate；5f-gravel；6f-Biomedia；7f-overflow pipe；8f-collecting pipe；9f-filter screen；10f-trees；11f-riprap；1X-water inlet pipe；2X-immersible pump；3X-rainwater reuse equipment；A-preformed precipitate district；B-filtering area；C-catchment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The present invention is directed to the rainwash containing substantial amounts of silt and pollutant (TSS < 200mg/l), propose a kind of low impact exploitation rainwater governing system, the determination of it determination including Rainwater Quality processing method and device and rainwater water quantity control method and device；Described Rainwater Quality processing method includes the physics initial gross separation method for filtering the large granule thing in rainwater, for filtering natural sedimentation and the waterpower partition method of bulky grain thing in rainwater and middle fine particle, for filtering the microparticle physical filtering method of the fine particle in rainwater；Described rainwater water quantity control method includes storing recycle method, underground is oozed to row's method outside method and flow control of regulating and storing；General water quality rainwater is defined as the rainwater that surface rain runoff is TSS < 200mg/l；Select one or more water treatment methods and device that rainwater is carried out water treatment according to suspended particulate substance size in the rainwash of rainwater from described Rainwater Quality processing method and device；In rainwash, contained suspended particulate substance dimension reference standard is as follows: be large granule thing when the particle diameter of the suspended particulate substance in described rainwash is more than 5000 microns；It is bulky grain thing when the particle diameter of the suspended particulate substance in described rainwash is simultaneously greater than 100 microns less than 5000 microns；When in described rainwash, the particle diameter of suspended particulate substance is middle fine particle when being simultaneously greater than 25 microns less than 100 microns；It is fine particle when the particle diameter of the suspended particulate substance in described rainwash is simultaneously greater than 1 micron less than 25 microns；It is colloidal substance when the particle diameter of the suspended particulate substance in described rainwash is less than 1 micron；Rainwash control rate according to rainwater selects one or more rainwater water quantity control methods from described rainwater water quantity control method.
A kind of low impact exploitation rainwater governing system being embodied as in technical scheme proposing as shown in Figure 1 a kind of includes arranging contaminant separation device that physics initial gross separation method adopts, microparticle physical filtering method adopts biofilter and rainwater water volume control device (i.e. cistern or rainwater delaying basin module).Wherein, biofilter is enhancement mode Rain Garden；Described enhancement mode Rain Garden includes the process pond 3f of water inlet pipe 1f and outlet pipe 2f；3f upper end, described process pond is provided with dismountable cover plate 4f；Described cover plate 4f is provided with and is available for the through hole that trees pass through；3f bottom, described process pond is covered with gravel 5f；It is filled with Biomedia 6f above described gravel 5f；Described Biomedia 6f is internally provided with vertically arranged overflow pipe 7f and horizontally disposed collecting pipe 8f；Described overflow pipe 7f connects with described collecting pipe 8f；Described overflow pipe 7f upper end is provided with filter screen 9f；Also plant in described Biomedia 6f and be implanted with trees 10f；The upper end of described Biomedia 6f is provided with riprap 11f.
Wherein adopt scum silica frost blocking apparatus at rain pipe line source head (inlet for stom water), remove large granule thing contained in rainwater by physical isolation effect.Large granule thing in rainwater, is often referred to the particle diameter particulate matter more than 5 millimeters or foreign material.
By Fig. 2 to Fig. 5 it can be seen that the drainage bucket 1 including being arranged on storm-water system inlet for stom water for the contaminant separation device of the particle separation diameter large granule thing more than 5 millimeters or drainage cloth bag 2 or filter screen 3 or scum silica frost barricade 4；Good separation facilities is under design rain fall, it is possible to be close to the large granule thing removed in rainwater of 100%.
As shown in figure 12, before the rainwater in pipeline is collected and regulates and stores, by enhancement mode Rain Garden, Rainwater Quality is improved.According to the particulate matter size in rainwater and particle concentration, it is possible to set at enhancement mode Rain Garden and center pre-decanting zone, make the bulky grain thing in rainwater (be often referred to particle diameter and be simultaneously greater than the granule of 100 microns less than 5000 microns) natural subsidence.Enhancement mode Rain Garden passes through physical filtering, chemisorbed, physical absorption, and biological treatment remove fine particle in the rainwater granule of 1 micron (particle diameter be simultaneously greater than less than 25 microns).Enhancement mode Rain Garden includes the process pond 3f of water inlet pipe 1f and outlet pipe 2f；Process 3f upper end, pond and be provided with dismountable cover plate 4f；Cover plate 4f is provided with and is available for the through hole that trees pass through；Process 3f bottom, pond and be covered with gravel 5f；Biomedia 6f it is filled with above gravel 5f；Biomedia 6f is internally provided with vertically arranged overflow pipe 7f and horizontally disposed collecting pipe 8f；Overflow pipe 7f connects with collecting pipe 8f；Overflow pipe 7f upper end is provided with filter screen 9f；Also plant in Biomedia 6f and be implanted with trees 10f；The upper end of Biomedia 6f is provided with riprap 11f.
Except above-mentioned water treatment method and apparatus, Rainwater Quality processes can also include chemiadsorption, physisorphtion and biological treatment.Chemiadsorption is that the polluters such as the COD (COD) in rainwater, total phosphorus (TP) and greasy dirt can be removed by the effect of chemisorbed.Being cultivated by engineering, chemical substance be attached on the medium in process facility, when rainwater is by process facility, pollutant contact with medium, and chemical action occurs, and water pollutant is removed.Chemisorption generally combines with other rainwater treatment facilities.Design good chemisorption under design rain fall, it is possible to obtain the clearance (different according to pollutant difference) of the pollutant of 50%-90%.Physisorphtion is that the polluters such as the COD (COD) in rainwater, total phosphorus (TP) and greasy dirt can also be removed by the effect of physical absorption.Determined the microstructure of process facility medium by engineering design, at rainwater by process facility process, pollutant are produced physisorption by medium, to reach to remove the purpose of rain water pollutant.Physisorption generally combines with other rainwater treatment facilities.Design good physical absorption technique under design rain fall, it is possible to obtain the clearance (different according to pollutant difference) of the pollutant of 50%-90%.Biological treatment is rainwater when passing through enhancement mode Rain Garden, and the polluter such as COD (COD) in rainwater, total phosphorus (TP) and greasy dirt is absorbed the nutrient substance into himself growth by root system of plant.Biomedia also provides good growth environment for microorganism simultaneously.When rainwater is by medium, it is attached to the microorganism on medium and also can utilize pollutant growth breeding.
Enhancement mode Rain Garden, while water quality treatment, also can provide certain green coverage for design section, play the effect of afforestation.Design good enhancement mode Rain Garden under design rain fall, it is possible to obtain the clearance (different according to pollutant difference) of the pollutant of 50%-90%.
For some special circumstances, it is necessary to implementing to control to by the drainage of crossing after process, rainwater water rate control is also the importance that rainwater is administered.Water rate control is waterlogging preventing and treating, and annual flow overall control rate is up to standard, and the key of rational utilization of water resources.The technical measures of water rate control are received water body to have with project level of ground water and surface rain and are directly contacted, it is possible to be divided into following several: store reuse, ooze with regard to underground, arrange outside flow control of regulating and storing.Storing reuse is during rainfall, is temporarily stored by the rainwater through water treatment in storage facility.After rainfall, according to technological design with need to fetch water from rainwater storage facility reuse by the situation of water, as shown in figure 13.Ooze with regard to underground is that (usual level of ground water is from infiltration face more than 1m) can use infiltration type rainwater module when level of ground water meets design requirement.In rainfall, the rainwater through water treatment is collected in infiltration type rainwater module.While rainwater is temporarily detained in pond, major part rainwater through at the bottom of osmotic cell, under ooze covering groundwater resources, fraction rainwater discharges system by design discharge.Ooze under rainwater module simultaneously and can provide further filtration treatment for rainwater at the bottom of pond, as shown in figure 14.And row is when level of ground water is too high outside flow control of regulating and storing, it is not necessary to during recycle-water, the rainwater module of impermeable formula should be used to do rainwater and to be detained outside flow control and arrange.In rainfall, the rainwater through water treatment is collected in impermeable formula rainwater module.The outer displacement of rainwater module outlet pipe is strictly controlled at the receiving scope of surface water body.
After media filtration technique, carry out rainwater-collecting again and regulate and store.Rainwater-collecting facility of regulating and storing includes the rainwater module can oozed, the rainwater module do not oozed down, or rainwater-collecting reuse tank with regard to underground.These facilities are provide temporary transient delay memory space through the rainwater of water treatment, not only play and control the effect that flow path surface is controlled flood and drained flooded fields, and are also the important technical that utilize of Rainwater Resources simultaneously.
Should be understood that; the foregoing is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope that disclosed herein; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention.
Claims (10)
1. good the low of water quality rainwater affects an administering method, including the determination of the determination of Rainwater Quality processing method and device and rainwater water quantity control method and device；Described Rainwater Quality processing method includes the physics initial gross separation method for filtering the large granule thing in rainwater, for filtering natural sedimentation and the waterpower partition method of bulky grain thing in rainwater and middle fine particle, for filtering the microparticle physical filtering method of the fine particle in rainwater；Described rainwater water quantity control method includes storing recycle method, underground is oozed to row's method outside method and flow control of regulating and storing；
It is characterized in that:
General water quality rainwater is defined as the rainwater that surface rain runoff is TSS < 200mg/l；
Select one or more water treatment methods and device that rainwater is carried out water treatment according to suspended particulate substance size in the rainwash of rainwater from described Rainwater Quality processing method and device；
In rainwash, contained suspended particulate substance dimension reference standard is as follows: be large granule thing when the particle diameter of the suspended particulate substance in described rainwash is more than 5000 microns；It is bulky grain thing when the particle diameter of the suspended particulate substance in described rainwash is simultaneously greater than 100 microns less than 5000 microns；When in described rainwash, the particle diameter of suspended particulate substance is middle fine particle when being simultaneously greater than 25 microns less than 100 microns；It is fine particle when the particle diameter of the suspended particulate substance in described rainwash is simultaneously greater than 1 micron less than 25 microns；It is colloidal substance when the particle diameter of the suspended particulate substance in described rainwash is less than 1 micron；
Rainwash control rate according to rainwater selects one or more rainwater water quantity control methods from described rainwater water quantity control method.
2. a kind of good the low of water quality rainwater according to claim 1 affects administering method, it is characterised in that: described physics initial gross separation method is the large granule thing that the physical property according to the large granule thing in rainwater utilizes in physical action separation rainwater；Described large granule thing includes floating thing or float or fall-out sediment.
3. a kind of good the low of water quality rainwater according to claim 2 affects administering method, it is characterised in that: drainage bucket (1) that the contaminant separation device that described physics initial gross separation method adopts includes being arranged on storm-water system inlet for stom water or drainage cloth bag (2) or filter screen (3) or scum silica frost barricade.
4. a kind of good the low of water quality rainwater according to claim 1 affects administering method, it is characterised in that: described natural sedimentation is to utilize the sediment deposition district (5) within storm-water system to make the precipitate and separate from rainwater under gravity of the bulky grain thing in rainwater.
5. a kind of good the low of water quality rainwater according to claim 1 affects administering method, it is characterised in that: described waterpower partition method is to make the middle fine particle in rainwater realize separating under different movement rates and settling rate by different hydraulics.
6. a kind of good the low of water quality rainwater according to claim 5 affects administering method, it is characterised in that: the contaminant separation device that described waterpower partition method adopts includes rainwater treatment pond；It is provided with one or more waterpower separately positioned in described rainwater treatment pond；Described waterpower is separately positioned includes waterpower particle separation filter screen (9a) or waterpower particle separation eddy flow dividing plate (8b) or waterpower particle separation baffle plate (7c) or hydrocyclone (5d).
7. a kind of good the low of water quality rainwater according to claim 1 affects administering method, it is characterised in that: described microparticle physical filtering method is that the fine particle utilizing cylinder filter or multistage rainwater treatment pond or biofilter to dam in rainwater is so that it separates from rainwater.
8. a kind of good the low of water quality rainwater according to claim 1 affects administering method, it is characterised in that: described rainwater water volume control device includes cistern or rainwater delaying basin module；Described rainwater delaying basin module includes infiltration type rainwater delaying basin module and impermeable formula rainwater delaying basin module.
9. a kind of good the low of water quality rainwater according to claim 1 affects administering method, it is characterised in that: it is the rainwater of TSS < 200mg/l for surface rain runoff；Low impact exploitation storm-water system arbitrarily selects a kind of large granule thing for filtering rainwash from the contaminant separation device that physics initial gross separation method adopts；Adopt the biofilter fine particle for filtering in rainwash；；Arbitrarily select a kind of for rainwater water rate control from two kinds of rainwater water volume control devices.
10. a kind of good the low of water quality rainwater according to claim 9 affects administering method, it is characterised in that: described biofilter is enhancement mode Rain Garden；Described enhancement mode Rain Garden includes the process pond (3f) of water inlet pipe (1f) and outlet pipe (2f)；Described process pond (3f) upper end is provided with dismountable cover plate (4f)；Described cover plate (4f) is provided with and is available for the through hole that trees pass through；Described process pond (3f) bottom is covered with gravel (5f)；Described gravel (5f) top is filled with Biomedia (6f)；Described Biomedia (6f) is internally provided with vertically arranged overflow pipe (7f) and horizontally disposed collecting pipe (8f)；Described overflow pipe (7f) connects with described collecting pipe (8f)；Described overflow pipe (7f) upper end is provided with filter screen (9f)；Also plant in described Biomedia (6f) and be implanted with trees (10f)；The upper end of described Biomedia (6f) is provided with riprap (11f).
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| CN201610225980.4A CN105800810A (en) | 2016-04-13 | 2016-04-13 | Low-effect treatment method of good-quality rainwater |
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| CN201610225980.4A CN105800810A (en) | 2016-04-13 | 2016-04-13 | Low-effect treatment method of good-quality rainwater |
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