CN104370384B - Unpowered integrated rainwater cyclone processing apparatus and method for processing rainwater by utilizing same - Google Patents

Unpowered integrated rainwater cyclone processing apparatus and method for processing rainwater by utilizing same Download PDF

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Publication number
CN104370384B
CN104370384B CN201410065343.6A CN201410065343A CN104370384B CN 104370384 B CN104370384 B CN 104370384B CN 201410065343 A CN201410065343 A CN 201410065343A CN 104370384 B CN104370384 B CN 104370384B
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rainwater
hydrocyclone
screen plate
entrance
processing
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CN104370384A (en
Inventor
吕永鹏
王磊
谭学军
谢胜
张辰
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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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
    • 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
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • C02F2101/163Nitrates
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

A provided unpowered integrated rainwater cyclone processing method comprises the following steps: 1, using a hand-basket grid to remove large impurities in rainwater; 2, enabling rainwater processed by the hand-basket grid to enter a cyclone separator, and separating and settling suspended solid in rainwater under the effect of centrifugal force; 3, enabling rainwater subjected to cyclone separation processing to flow through a concrete filter plate at the central segment of the separator, filtering out and adsorbing and further effectively removing fine suspend solids, nutrients, heavy metals and the like in rainwater by the filter plate; and 4, enabling rainwater processed by the filter plate to flow out from a water outlet, and storing the processed rainwater for reuse or directly discharging into surface water. The unpowered integrated rainwater cyclone processing apparatus and the method using the apparatus are capable of efficiently removing suspend solids, nutrients, heavy metals and other pollutants in rainwater, provide possibility for multi-purpose multi-layer multi-objective comprehensive utilization of rainwater, and have wide application prospect in the field of rainwater processing.

Description

A kind of Unpowered integrated form rainwater eddy flow processing means and method thereof
Technical field
The invention belongs to rainwater treatment technical field, relate to a kind of unpowered integrated form rainwater eddy flow processing means and method thereof.
Background technology
Along with the propelling of urbanization process, being continuously increased of the impermeable surface such as road, square, bridge, building in city, rainfall runoff infiltration is greatly decreased, and run-off sharply increases.When heavy rain produces, the upper a large amount of pollutant of underlying surface (mainly roofing and road surface) enter the receiving water body such as river course, lake with runoff by urban discharging pipeline or cross flow under rain drop erosion, form typical Modes for Urban Stormwater Runoff Pollution, urban ecological environment is constituted impact impact, the serious improvement restricting urban water environmental quality.Rainwater rainwash is as non point source of pollution, have that polluter space-time is discrete and heterogeneity, the feature such as flow is big, impact is strong, pollutant component is complicated, contained suspended solids thing particle diameter is less, be extremely difficult to low cost, treatment effect quick, high efficiency with conventional sewage treatment technology.
Cyclone separation process have compact conformation, simple structure, floor space is little, the suitability is strong, maintenance cost is low, easily designed with install and can easily be accommodated and the advantage such as control, the industry relating to solid-liquid separation at petrochemical industry, metallurgy etc. is widely applied, one of combined drainage system pollution control technology that Ye Shi U.S. Environmental Protection Agency (EPA) (EPA) is recommended.But, cyclone separation process is primarily adapted for use in the removal preferable particulate matter of settling property, poor to removal effects such as nutrition class material and heavy metal substance such as the less suspended solid of particle diameter in rainwater, phosphate.Additionally, segment fluid flow power cyclone separator is inadequate to the attention of antiscour, disturbance rejection, cyclone main body directly contacts with mud-sinking area, easily causes cyclone main body that bottom sinks the disturbance of mud, the phenomenon of granule settling flux occurs, thus cause rainwater treatment effect instability.Furthermore, current studies in China is more focused on dynamical type cyclone separator, due to energy consumption, runs and the aspect problem such as maintenance, limits cyclone separator promotion and application in rainfall runoff processes.
Summary of the invention
It is an object of the invention to provide a kind of unpowered integrated form rainwater eddy flow processing means, for solving existing cyclone separation process problem encountered when processing rainwater, and mutually integrated with screen plate for cyclone separator, to improve the removal efficiency of suspended solid, nutrient substance and the heavy metal less to particle diameter in rainwater, for rainwater multipurpose, providing with multiple target comprehensive utilization at many levels may.
To achieve these goals, the technical scheme is that
A kind of unpowered integrated form rainwater eddy flow processing means, including basket grid, rainwater cyclonic separation and filtration treatment integrating device, described basket grid outlet pipe processes with described rainwater eddy flow and connects with filtration integrating device, described rainwater cyclonic separation and filtration treatment integrating device include hydrocyclone, described hydrocyclone top arranges rainwater entrance, described rainwater entrance connects with basket grid outlet pipe, it is provided with underflow pipe below described hydrocyclone, described hydrocyclone be provided above concrete screen plate, concrete screen plate be provided above rainwater outlet.
The pitch of described basket grid is 1 centimetre ~ 2 centimetres, is used for filtering the large-scale impurity such as branch leaves, refuse bag in rainwater, after described basket grid is generally positioned at rainwater-collecting mouth or rainwater collection collector.
Described concrete screen plate is made up of Alkaline porous materials, available giant backwash, it is easy to dismounting and change.
The underflow pipe of described hydrocyclone is connected with municipal wastewater pipe, and the pollutant in rainwater enter underflow pipe after cyclonic separation, enters sewage treatment plant by municipal wastewater pipe and focuses on.
Rainwater cyclonic separation and filtration treatment integrating device top arrange a movable fixture lid.Described unpowered integrated form rainwater eddy flow processing means operation maintenance is convenient, and attendant opens movable fixture lid, and after taking out the concrete screen plate of separator central section, can enter and carry out Maintenance and Repair inside device.
Another object of the present invention is to provide a kind of rainwater cyclonic separation and filtration treatment integrating device, mutually integrated with screen plate for cyclone separator, to improve the removal efficiency of suspended solid, nutrient substance and the heavy metal less to particle diameter in rainwater, for rainwater multipurpose, providing with multiple target comprehensive utilization at many levels may.
To achieve these goals, technical scheme is as follows: a kind of rainwater cyclonic separation and filtration treatment integrating device, it is characterized in that described rainwater cyclonic separation and filtration treatment integrating device include a hydrocyclone, described hydrocyclone top arranges rainwater entrance, it is provided with underflow pipe below described hydrocyclone, described hydrocyclone be provided above concrete screen plate, concrete screen plate be provided above rainwater outlet.
It is still another object of the present invention to provide a kind of method utilizing unpowered integrated form rainwater eddy flow processing means to process rainwater, be used for solving existing cyclone separation process problem encountered when processing rainwater.
To achieve these goals, technical scheme is as follows: a kind of method utilizing unpowered integrated form rainwater eddy flow processing means to process rainwater, comprises the steps:
Step one: surface rain runoff flows through basket grid, removes large-scale impurity;
Step 2: described basket grid water outlet enters cyclone separator by rainwater entrance, and hydrocyclone is converted into tangential laminar flow flow shape from turbulent flow;Under the influence of centrifugal force, in rainwater, suspended solid is separated from rainwater and is settled down;
Step 3: the rainwater after described cyclonic separation processes flows through the concrete screen plate being arranged on rainwater entrance top, and in rainwater, tiny suspended solid, nutrient substance and heavy metal are filtered at screen plate, adsorb, and then are efficiently removed;
Step 4: described rainwater after concrete filter plate flows out from the outlet being arranged on above concrete screen plate, can carry out storing reuse or being directly discharged into the surface water such as river, lake.
Preferably, after in described step one, basket grid is arranged at rainwater-collecting mouth or rainwater collection collector.
Preferably, in described step 2, hydrocyclone utilizes the head fall of field condition can realize running well, it is not necessary to by external impetus condition.In view of the hydrocyclone loss of flood peak, rainwater entrance gross head typically should be higher 0.2m ~ 0.3m than rainwater outlet gross head.
Preferably, in described step 2, hydrocyclone water inlet water (flow) direction is tangent with cyclone separator inwall, and water inlet trajectory is spiral line type, and flow shape is converted into tangential laminar flow by turbulent flow.
Preferably, the suspended solid precipitated through hydrocyclone separation in described step 2 is discharged into municipal wastewater pipeline by underflow pipe, greatly reduces daily cleaning amount.
Preferably, in described step 3, the size of concrete screen plate, porosity and flux can be corrected to adapt to various traffic requirement.
Preferably, in described step 3, concrete screen plate is made up of Alkaline porous materials, containing components such as phosphide absorbent, perlites.Alkaline environment is conducive to metal ion sedimentation and the accumulation of alkaline soluble materials, the components such as pore structure can provide sufficient specific surface area when water is through screen plate for the absorption of pollutant in water and precipitation, phosphide absorbent can adsorb the nutrient substance such as the phosphate in rainwater.
The present invention compared with prior art, has the advantage that and beneficial effect:
1, high to contaminant removal efficiency in rainwater.Mutually integrated with concrete screen plate for hydrocyclone, the grains of sand of big particle diameter in rainwater can not only be removed, tiny suspended solid, nutrient substance (phosphate and nitrate etc.) and heavy metal are also had certain removal effect.
2, the head fall utilizing field condition can realize running well, it is not necessary to electric energy, and operation maintenance is convenient.
3, integrated form design decreases rainwater treatment facility floor space and excavating cost;Cyclone separator and screen plate can first be pre-assembled and transport engineering site again to, saves construction and set-up time.
4, start just rainfall runoff to be processed from rainfall, not abandoned stream early-stage rainwater, Rainwater Quality after process can reach national standard for recycled water after, may be used for rinsing road, toilet flushing, flushing vehicle, greening irrigation, supplementing landscape water, fire control and other aspects purposes.
5, entering underflow after the pollutant in rainwater are processed by cyclone separator, enter sewage treatment plant by the municipal wastewater pipe being connected with underflow pipe and focus on, overcome a tradition rainwater cyclone separation device desilting difficult problem, operation maintenance is convenient;Additionally, by being separated with underflow settling zone in the eddy flow district of cyclone separator, pollutant back-mixing in underflow can be avoided, improve effluent characteristics.
The present invention utilizes the rainwater treatment method that unpowered integrated form rainwater eddy flow processing means is realized, good to pollutant removal in rainwater, floor space is little, need not electric energy, operation maintenance is convenient, can be the multipurpose of rainwater, provide possibility with multiple target comprehensive utilization at many levels, have broad application prospects in rainwater treatment field.
Accompanying drawing explanation
Fig. 1 is the flow chart of the embodiment of the present invention two unpowered integrated form rainwater eddy flow processing method.
Fig. 2 is the schematic diagram of the embodiment of the present invention one rainwater cyclonic separation and filtration treatment integrating device.
Fig. 3 is the top view of Fig. 2.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.According to following explanation and claims, advantages and features of the invention will be apparent from.It should be noted that, accompanying drawing all uses the form simplified very much and all uses non-ratio accurately, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
Below in conjunction with Fig. 1 and Fig. 2, describe the method that the present invention unpowered integrated form rainwater eddy flow processing means processes rainwater in detail.
A kind of unpowered integrated form rainwater eddy flow processing means, including basket grid 7, rainwater cyclonic separation and filtration treatment integrating device 8, described basket grid 7 outlet pipe processes with described rainwater eddy flow and connects with filtration integrating device 8, described rainwater cyclonic separation and filtration treatment integrating device 8 include hydrocyclone 2, it is provided with concrete screen plate 3 in described hydrocyclone 2, the lower section of described concrete screen plate 3 arranges rainwater entrance 1, be provided with underflow pipe 5 bottom described hydrocyclone, concrete screen plate 3 be provided above rainwater outlet 4.
Described hydrocyclone 2 upper inside wall is the face of cylinder, lower inner wall is taper seat, the bottom of described taper seat is provided with opening, rainwater entrance 1, rainwater outlet 4 and concrete screen plate 3 are arranged at described hydrocyclone top, and the water (flow) direction of rainwater entrance and rainwater outlet is all tangent with cyclone separator inwall.
Described concrete screen plate 3 is made up of Alkaline porous materials, available giant backwash, it is easy to dismounting and change.
The underflow pipe 5 of described hydrocyclone 2 is connected with municipal wastewater pipe, and the pollutant in rainwater enter underflow pipe after cyclonic separation, enters sewage treatment plant by municipal wastewater pipe and focuses on.
As in figure 2 it is shown, the method that the unpowered integrated form rainwater eddy flow processing means of one embodiment of the invention processes rainwater comprises the steps:
Step one: surface rain footpath flows through basket grid 7, removes the large-scale impurity such as branch leaves, plastic bag;
Specifically, after described basket grid is arranged at rainwater-collecting mouth or rainwater collection collector, pitch is 1 centimetre ~ 2 centimetres, and grid slag can the most periodically carry out labor cleaning.
Step 2: described basket grid water outlet enters bottom cyclone separator 2 from rainwater entrance 1, and hydrocyclone is converted into tangential laminar flow flow shape from turbulent flow;Under the influence of centrifugal force, in rainwater, suspended solid (the especially grains of sand) is separated from rainwater and is settled down.
Specifically, in step 2, flow of inlet water is 10 L/s ~ 20L/s, rainwater entrance gross head 0.2m ~ 0.3m higher than rainwater outlet gross head, and cyclone separator utilizes the head fall of field condition to realize running well, it is not necessary to by external impetus condition.The suspended solid precipitated enters underflow pipe 5, enters sewage treatment plant by municipal wastewater pipe and focuses on.
Step 3: the rainwater after described cyclonic separation processes flows through the concrete screen plate 3 being arranged on separator room central section, and in rainwater, tiny suspended solid, nutrient substance and heavy metal etc. are filtered at screen plate, adsorb, and then are efficiently removed.
Specifically, in step 3, concrete screen plate 3 is made for Alkaline porous materials, containing components such as phosphide absorbent, perlites.Alkaline environment is conducive to metal ion sedimentation and the accumulation of alkaline soluble materials, the components such as pore structure can provide sufficient specific surface area when water is through screen plate for the absorption of pollutant in water and precipitation, phosphide absorbent can adsorb the nutrient substance such as the phosphate in rainwater.
In step 2, the water (flow) direction of hydrocyclone rainwater entrance 1 is tangent with cyclone separator cylinder shape inner wall, rainwater enters with certain speed, flow shape is converted into tangential laminar flow by turbulent flow and forms whirlpool in cyclone separator, the suspended solids such as the grains of sand that rainwater Midst density is bigger are separated under the influence of centrifugal force, and are settled down in underflow along separator inwall under gravity;Owing to separator bottom is pyramidal structure, whirlpool center rainwater flows up, by concrete screen plate and then processed.In order to reach preferable cyclonic separation effect, the cone angle of hydrocyclone 2 lower cone face inwall is 15 ~ 20 °.
Step 4: certainly described rainwater after concrete screen plate 3 filters is gone out the rainwater mouth of a river 4 and flows out, can carry out storing reuse or being directly discharged into the surface water such as river, lake.
In the present invention, unpowered integrated form rainwater treatment device and method thereof respectively reach 90%, 60%, 60% and 90% to the clearance of total suspended solid, total phosphorus, total nitrogen and COD in rainwater, heavy metal zinc, lead, the clearance of copper respectively reach 80%, 90% and 85%, and rainwater water quality after treatment can meet quality of reused water standard.
In sum, the unpowered rainwater eddy flow processing means of the present invention and utilize the method that this device processes rainwater, tradition cyclone separator can be overcome to process problem existing during rainwater, the pollutant such as effective suspended solid, nutrient substance and heavy metal removed in rainwater, can be the multipurpose of rainwater, multi-level and multiple target comprehensive utilization offer is possible, has higher using value and wide market prospect.
Foregoing description is only the description to present pre-ferred embodiments, not any restriction to the scope of the invention, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification, belongs to the protection domain of claims.

Claims (8)

  1. null1. a unpowered integrated form rainwater eddy flow processing means,It is characterized in that,Integrated form rainwater eddy flow processing means that this is unpowered includes basket grid and rainwater cyclonic separation and filtration treatment integrating device,Described basket grid outlet pipe connects with filtration treatment integrating device with described rainwater cyclonic separation,Described rainwater cyclonic separation and filtration treatment integrating device include a hydrocyclone,Described hydrocyclone top arranges rainwater entrance,It is provided with underflow pipe below described hydrocyclone,Described hydrocyclone be provided above concrete screen plate,Concrete screen plate be provided above rainwater outlet,Rainwater entrance flow of inlet water is 10 L/s ~ 20L/s,Rainwater entrance gross head 0.2m ~ 0.3m higher than rainwater outlet gross head,Described hydrocyclone upper inside wall is the face of cylinder,Lower inner wall is taper seat,The bottom of described taper seat is provided with opening,Rainwater entrance、Rainwater outlet and concrete screen plate are arranged at described hydrocyclone top,And the water (flow) direction of rainwater entrance and rainwater outlet is all tangent with hydrocyclone inwall,The underflow pipe of described hydrocyclone is connected with municipal wastewater pipe.
  2. Unpowered integrated form rainwater eddy flow processing means the most as claimed in claim 1, it is characterised in that described concrete screen plate is made up of Alkaline porous materials.
  3. Unpowered integrated form rainwater eddy flow processing means the most as claimed in claim 1, it is characterised in that rainwater cyclonic separation and filtration treatment integrating device top arrange a movable fixture lid.
  4. null4. a rainwater cyclonic separation and filtration treatment integrating device,It is characterized in that described rainwater cyclonic separation and filtration treatment integrating device include a hydrocyclone,Described hydrocyclone top arranges rainwater entrance,It is provided with underflow pipe below described hydrocyclone,Described hydrocyclone be provided above concrete screen plate,Concrete screen plate be provided above rainwater outlet,Rainwater entrance flow of inlet water is 10 L/s ~ 20L/s,Rainwater entrance gross head 0.2m ~ 0.3m higher than rainwater outlet gross head,Described hydrocyclone upper inside wall is the face of cylinder,Lower inner wall is taper seat,The bottom of described taper seat is provided with opening,Rainwater entrance、Rainwater outlet and concrete screen plate are arranged at described hydrocyclone top,And the water (flow) direction of rainwater entrance and rainwater outlet is all tangent with hydrocyclone inwall.
  5. 5. the unpowered integrated form rainwater eddy flow processing means that a kind utilizes described in claim 1 processes the method for rainwater, it is characterised in that comprise the steps:
    Step one: surface rain runoff flows through basket grid, removes large-scale impurity;
    Step 2: described basket grid water outlet enters hydrocyclone by rainwater entrance, and hydrocyclone is converted into tangential laminar flow flow shape from turbulent flow;Under the influence of centrifugal force, in rainwater, suspended solid is separated from rainwater and is settled down, and in this step, flow of inlet water is 10 L/s ~ 20L/s, rainwater entrance gross head 0.2m ~ 0.3m higher than rainwater outlet gross head;
    Step 3: the rainwater after cyclonic separation processes flows through the concrete screen plate being arranged on rainwater entrance top, and in rainwater, tiny suspended solid, nutrient substance and heavy metal are filtered at screen plate, adsorb, and then are efficiently removed;
    Step 4: described rainwater after concrete filter plate flows out from the outlet being arranged on above concrete screen plate, can carry out storing reuse or being directly discharged into surface water.
  6. 6. the method processing rainwater as claimed in claim 5, it is characterised in that in described step one, after basket grid is arranged at rainwater-collecting mouth or rainwater collection collector.
  7. 7. the method processing rainwater as claimed in claim 5, it is characterised in that the suspended solid precipitated in described step 2 is discharged into municipal wastewater pipeline by underflow pipe.
  8. 8. the method processing rainwater as claimed in claim 5, it is characterised in that in described step 3, concrete screen plate is made up of Alkaline porous materials.
CN201410065343.6A 2014-02-26 2014-02-26 Unpowered integrated rainwater cyclone processing apparatus and method for processing rainwater by utilizing same Active CN104370384B (en)

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JP2000135500A (en) * 1998-10-30 2000-05-16 Etsuo Kobayashi Wastewater purification equipment
CN2856215Y (en) * 2005-12-31 2007-01-10 河海大学 Novel ecological rain collection ditch
CN101105039B (en) * 2006-07-12 2010-10-06 北京科净源科技股份有限公司 Rainwater primary fluid-discarding device
KR100792135B1 (en) * 2007-05-25 2008-01-04 비손푸른엔지니어링 주식회사 A Multi-stage Reducing Facility of Pollutants included in Stormwater
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