CN201400615Y - Treatment system of wastewater from circulating water - Google Patents

Treatment system of wastewater from circulating water Download PDF

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Publication number
CN201400615Y
CN201400615Y CN2009201075264U CN200920107526U CN201400615Y CN 201400615 Y CN201400615 Y CN 201400615Y CN 2009201075264 U CN2009201075264 U CN 2009201075264U CN 200920107526 U CN200920107526 U CN 200920107526U CN 201400615 Y CN201400615 Y CN 201400615Y
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China
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water
filter tank
flocculation
treatment system
sewer
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CN2009201075264U
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郑卫民
倪望青
谢勇
唐鹏
耿晓彬
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BEIJING XINJIN YINGLI SCI-TECH DEVELOPMENT Co Ltd
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BEIJING XINJIN YINGLI SCI-TECH DEVELOPMENT Co Ltd
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Abstract

The utility model provides a treatment system of wastewater from circulating water, which comprises a flocculation-air flotation-filtering integrated device, a cartridge filter and a frequently changing pole electrodialysis device. The flocculation-air flotation-filtering integrated device is equipped with a flocculation area, an air flotation area and a filtering area, the filtering area consistsof four mutually independent filter chambers which are arranged in parallel, each filter chamber is equipped with a filter chamber water inlet, a back washing water inlet, a filter chamber water discharging opening and a back washing water discharging opening which are independently controlled, the filter chamber water inlet and the back washing water inlet are respectively communicated with an air flotation tank water discharging opening and a back washing water collecting tank through pipelines, the filter chamber water discharging opening is connected with the cartridge filter via a pipeline, and a water outlet of the cartridge filter is connected with the frequently changing pole electrodialysis device. The key of the treatment system includes utilizing the flocculation-air flotation-filtering integrated device to meet continuous requirements upon water of follow-up processes or equipment through parallel arrangement of the filter chambers.

Description

The treatment system of recirculated water sewer
Technical field
The utility model belongs to water treatment field, is specifically related to a kind of treatment system of recirculated water sewer.
Background technology
Water scarcity is the problem that most of area, the world today is faced, especially in China, along with the develop rapidly of science and technology and the raising of industrialized level, one of important factor that more and more becomes restriction city and industrial development in short supply of water resources, and recirculating cooling water system is the water rich and influential family, account for about 70% of industrial total water amount, so the water saving technology that recirculated cooling water is explored in research is most important.
Because recirculated water is to use repeatedly in the water circulation system midium or long term, thus have that soluble solid concentrates, hardness is high, suspended substance increases, features such as microbial growth and corrodibility enhancing.The normal at present solution that adopts is to add medicaments such as Scale inhibitors, sterilant, inhibiter to improve cycles of concentration in water body, to realize the water saving operation.Yet even implemented under the effective situation of above-mentioned measure, circulating water system still has very big blowdown flow rate.To produce 700000 tons ethylene production factory per year is example, and quantity of circulating water reaches 52000m when normally moving 3/ h per hour needs to replenish fresh water 800~900m to circulating water system 3, and circulating water system blowdown flow rate hourly also reaches 150~180m 3, at present, still directly discharge for the processing mode that big blowdown flow rate like this most generally adopts.
Though the processing of sewage and reuse have had many research and application, to the open report of the processing of sewage from industrial cycle water and reuse technology research with use also seldom.Reason is: all kinds of oily(waste)waters or the high turbid sewage that produce in the industry industrial production such as recirculated water sewer and papermaking, refining of petroleum, Chemicals manufacturing have very big difference (mainly showing high basicity and high rigidity) in nature, and recirculated water when in system, moving in order to guarantee scale inhibition and corrosion inhibition, the reuse moisturizing also requires to have suitable specific conductivity, that is, also should keep certain ion content after the processing.These factors have also determined the reuse treatment process to the recirculated water sewer to be different from that paper industry, petroleum refining industry and Chemicals production produce and the processing of sewage effluent.
Ultrafiltration and reverse osmosis technology are very general in the application of water treatment field, especially in recent years, water body desalting technology field begins generally to adopt reverse osmosis technology, the core component of this technology is a reverse osmosis membrane, but reverse osmosis membrane is to the water quality requirement harshness of water inlet, cause the cost height of desalting treatment, less economical.On the other hand, mention as the front, circulating cooling make-up water needs certain ion content, specific conductivity is generally about 500 μ s/cm, and reverse osmosis goes out water conductivity generally below tens μ s/cm, needs and other water source can be done moisturizing after blending and uses, and has therefore caused the wasting of resources to a certain extent; And the characteristics of the high basicity of recirculated water sewer, high rigidity can cause reverse osmosis to consume a large amount of acid and Scale inhibitors.Although domesticly sea water desaltination demonstration project and the high slat-containing wastewater desalination engineering that many cases adopt reverse osmosis technology occurred, the example that the recirculated water sewer is carried out the desalination reuse seldom appears in the newspapers specially.
Chinese patent application 200610150162.9 discloses " a kind of treatment process of sewage from industrial cycle water ", this method mainly is with after sewage from industrial cycle water process flocculation sediment, the filtration treatment, the direct moisturizing reuse of a part as circulating water system, another part is handled the back reuse through nanofiltration system, by the two is joined in the recirculated water after according to certain mixed, reach industrial circulating water recycling, reduce the purpose of system's fresh water rate of water make-up and blowdown flow rate.For considering that recirculated water there is no need to remove all ions (salt), and the characteristics of nanofiltration membrane, this method has adopted nanofiltration technique to the processing of sewer, compares with reverse osmosis membrane technology, when realizing, also has the advantage that running cost reduces to the sewer Treatment for Reuse.In order to make water body reach the water inlet requirement of nanofiltration membrane, this part sewer needs first pre-treatment, for example, the sewer of putting down in writing in the embodiment is before entering nanofiltration membrane, also passed through flocculation, the processing of filtration and Hollow Fiber Ultrafiltration, as seen, during this method is implemented, for the pre-treatment of block film fouling and prolongation membrane lifetime needs is invested very high, and for nanofiltration membrane, also exist operational process need consume a large amount of acid and Scale inhibitors, and the too high and defective that causes running cost to increase of operating pressure, and utilizing nanofiltration membrane treatment, the ion content in the water outlet is far smaller than needs the ion content that keeps in the circulating water system, not only can not satisfy the specific conductivity needs of circulating cooling make-up water, and also cause the wasting of resources to a certain extent.
Adopting the electro-adsorption device to handle to reclaim sewer also is in recent years research direction, and its principle is to utilize the electrostatic double layer at electrode and liquid surface place to carry out ionic to store and discharge, and realizes sewage is carried out after the desalting treatment as circulating cooling make-up water.So that but reach the water inlet index of electro-adsorption device, also need very complicated pretreatment stream flow process early stage, just can carry out electro-adsorption after for example needing to experience coagulation-sand filtration-fibre-ball filtration-ultrafiltration-security personnel filtration.Not only technical process complexity, treating processes is because the electrode regeneration time long (account for working time 1/4~1/2) makes the entire treatment process become periodical operation, and equipment efficiency of usage and producing water ratio all are difficult to raising.In addition, because the restriction of electrode materials causes adsorptive capacity limited, cause ratio of desalinization not high, the regeneration of only suitable hyposaline water is usually handled high slat-containing wastewater and can be had defectives such as equipment is various, floor space is big.
On the other hand, the flocculation of water body, air supporting and filtration and membrane filtration are devices commonly used in the water treatment, promptly, after flocculation of sewage process and air supporting are handled, little density suspended substance and colloid rise to liquid level with microbubble and discharge by scraping slag system, and air-float water enters filtering basin, could satisfy the water inlet requirement of film treatment facilities such as follow-up nanofiltration or ultrafiltration after the filtration.Usually adopt the filtering basin that are filled with filtrate, increase along with filtration time, impurity in the water and suspended substance are trapped within on the filtrate, cause filter tank pressure reduction to increase, filtering velocity reduces, flow of filtrate reduces (producing water ratio of this operation reduces), and can only recover filter effect and flow this moment by the backwash to the filter tank.Conventional way during backwash is, stops the water inlet of sewage, and backwash is concentrated in the filter tank, and then restarts into that water changes normal operation over to.So, in backwash process, do not produce water, that is to say that conventional air supporting-filtration unit does not produce water when backwash, if subsequent technique needs continuous water, just must increase facilities such as Buffer Pool, make troubles not only for the serialization of waste water treating and reutilizing engineering, the setting of Buffer Pool has also increased takes up an area of and investment.
The utility model content
The purpose of this utility model provides a kind of treatment system that is used for the recirculated water sewer, this treatment system is filtered flocculation, air supporting and filtration and security personnel and the organic set of frequently pole-reversing electroosmosis device, and adopt flocculation-flotation-filtering integral device, by being arranged in parallel of a plurality of filtering basin, water and online backwash are produced in the real serialization that realizes, not only save the occupation of land and the investment of fender system, also can satisfy subsequent technique or equipment to coming the demand of water requirement serialization simultaneously.
The utility model provides a kind of treatment system of recirculated water sewer, and described treatment system comprises flocculation-flotation-filtering integral device, security personnel's strainer and frequently pole-reversing electroosmosis device, wherein,
Flocculation-flotation-filtering integral device is provided with flocculation zone, air flotation zone and filtrating area, and flocculation zone links to each other with air flotation zone, and is provided with the sewer inlet; Air flotation zone is provided with dissolved air water releasing mechanism, slag scraping mechanism, slag-drip opening and air flotation pool water port, and the air flotation pool water port is communicated with the filter tank water-in of filtrating area by pipeline; Filtrating area is arranged in parallel by at least four and separate filter tank is formed, and each filter tank is provided with filter tank water-in, backwash water water-in, filter tank water port and the backwash water water port of independent control, filter tank water-in and backwash water water-in communicate with air flotation pool water port and backwash water water collecting basin by pipeline respectively, and the filter tank water port links to each other with security personnel's strainer by pipeline;
The water outlet of security personnel's strainer links to each other with the frequently pole-reversing electroosmosis device.
The treatment system that the utility model provides designs at the characteristics and the character of recirculated water sewer, pass through the turbidity removal purifying treatment of flocculation-flotation-filtering integral device from the sewer of circulating water system, and security personnel's strainer further removes suspended substance, the turbidity of water body is lowered to below the 3NTU, thereby satisfy the influent quality requirement of frequently pole-reversing electroosmosis, and the entire treatment system does not need expensive membrane filter appts.
Utilize treatment system of the present utility model, after sewer process flocculation reaction and air supporting are handled, enter each filter tank through air flotation pool water port and each filter tank water-in, filtration is born in a plurality of filter tanks by parallel connection jointly, owing to be the water outlet after the processing air supporting in parallel between each filter tank, its water distribution is independently, therefore can be to filter tank backwash in turn successively, promptly, each stops filtration to a filter tank and carries out backwash, the flooding velocity of this backwashing filter is shared in other filter tank, has guaranteed to filter the continuity of producing water.For guaranteeing filtering function and flow of filtrate, at least four of the settings in filter tank, the result of comprehensive consideration, preferably, described filtration chamber is arranged in parallel by five or six and separate filter tank is formed.
Be provided with filter material layer in the described filtrating area, backwash water water-in and filter tank water port are located on the filter tank wall of filter material layer below, and filter tank water-in and backwash water water port are located on the filter tank wall of filter material layer top.
According to the treatment system of recirculated water sewer of the present utility model, at least two baffles of flocculation zone setting, this baffle can make the sewage that enters because of the change of flow velocity is stirred, and are beneficial to the effect that improves flocculation reaction.
Preferably, at least three baffles of flocculation zone setting, and the spacing between the adjacent screen increases gradually along water (flow) direction.Sewer input back flow velocity in the zone between different baffles reduces gradually, and the effect of bringing is that stirring intensity is gradually slow, is beneficial to the time and the mixture strength of control sewage flocculation reaction.
According to the treatment system of recirculated water sewer of the present utility model, in described flocculation-flotation-filtering integral device, flocculation zone and air flotation zone are positioned at filtrating area top.Like this, whole device is compact more, is beneficial to and controls, and can reduce floor space.
In the treatment system of recirculated water sewer of the present utility model, described air flotation zone is provided with the dissolved air water intake, and arrives dissolving by pipeline connection, and described dissolved air water releasing mechanism comprises the dissolved air water reliever that is communicated with the dissolved air water outlet of dissolving.Perhaps, the filter tank water port is communicated with dissolving by pipeline, and described dissolved air water releasing mechanism comprises the dissolved air water reliever that is communicated with the dissolved air water outlet of dissolving.The water intaking of dissolved air water can be from the filter tank water outlet of air-float water or filtrating area, that is, described dissolved air water releasing mechanism comprises dissolved air water reliever, air compressor machine and the dissolving of being located at air flotation zone, and the dissolved air water reliever arrives dissolving by pipeline connection; The dissolved air water import of dissolving is arrived air flotation zone or filter tank water port by pipeline connection.
The treatment system of recirculated water sewer of the present utility model, needs according to technical process, mainly comprise described flocculation-flotation-filtering integral device, security personnel's filtration unit and frequently pole-reversing electroosmosis device, they become treatment system of the present utility model according to the treatment scheme series connection.Particularly, also be serially connected with the lifting water pump in filter tank water port and the connecting pipeline of security personnel between the strainer, and, acid substance be provided with in the pipeline and Scale inhibitors adds mouth.As for security personnel's filtration unit and frequently pole-reversing electroosmosis device (have and can realize that the electrodialysis unit that regularly changes the electropotential characteristic is called the frequently pole-reversing electroosmosis device) itself all is public conventional equipment known in this field, and its concrete structure and principle of work no longer describe in detail.
When utilizing treatment system of the present utility model to implement Treatment for Reuse to the recirculated water sewer, sewer is raised and enters flocculation zone, add flocculation agent (flocculation agent add mouthful can be positioned on sewer ingress or the pipeline before) simultaneously, flocculation agent is selected polyacrylamide (PAM) for use in the utility model, add-on is that 4-8mg/ rises sewage, at least 5 minutes (can realize) of flocculation reaction time control by being provided with of baffle, make colloid and particulate matter flocculation in the water body take off steady by the interfacial tension that changes pollutent, realize solid-liquid separation, enter air flotation zone subsequently, under the dissolved air water effect, big density suspended substance and colloid after taking off surely enter lower floor's filtrating area with air-float water, the little density suspended substance and the colloid that take off after steady rise to liquid level because the microbubble (about 50 μ m) of reliever release sticks, discharge by scraping slag system, realize removal suspended substance in the water body and colloidal solid.Air-float water enters each filter tank with suspended substance in the filtering water body and impurity by pipeline, discharge flocculation-flotation-filtering integral device from the air flotation pool water port, after regulating water body basicity, acid substance and Scale inhibitors enter security personnel's strainer through online adding, suspended substance in the water further dams, guarantee the influent quality of frequently pole-reversing electroosmosis, finally become the reuse moisturizing through electrodialytic desalting.
In treating processes, monitor the flow of filtrate in filter tank at any time, when filter tank pressure reduction rises to certain value or operation reaches certain cumulative time, can carry out backwash to each filter tank successively, only stop into water to the filter tank of need backwash this moment, start backwash operation after the emptying, and normal operation is kept in other filter tank and share the flooding velocity of this backwashing filter.So can realize online backwash continuous product water simultaneously.
The treatment system that the utility model provides has the following advantages:
1, the flocculation-flotation-filtering integral device of Cai Yonging is beneficial to the turbidity of realizing water body and removes, and since the setting in a plurality of independent filter tanks realized online backwash and produced water continuously.
2, the combined system that proposes at the character of the water quality requirement of recirculated water and sewer, do not adopt nanofiltration commonly used in the water technology, ultrafiltration, running cost height such as reverse osmosis, pre-treatment requires the high device of degree, removed from nanofiltration membrane and the easy misgivings of polluting of reverse osmosis membrane, also avoided the electro-adsorption technology can not produce water continuously, recovery time is long, and the defective that is not suitable for the reuse of high saliferous sewer, several commonly used and easy treatment technologies are organically combined, realize producing continuously water, producing water ratio is not less than 75%, and the water quality after handling satisfy " reuse of wastewater engineering design standard " (GB50335-2002) in relevant reuse water as the water quality controlling index of cooling water.
Description of drawings
Fig. 1 is each device of recirculated water sewer treatment system of the present utility model and combination synoptic diagram.
Fig. 2 is an embodiment synoptic diagram of flocculation-flotation-filtering integral device in the recirculated water sewer treatment system of the present utility model.
Fig. 3 is the schematic top plan view of flocculation-flotation-filtering integral device among Fig. 2.
Fig. 4 is that each hydraulic pipe-line is provided with synoptic diagram among flocculation-flotation of the present utility model-filtering integral device embodiment.
Embodiment
Further specify scheme of the present utility model and implementation result below in conjunction with the drawings and specific embodiments, but can not be interpreted as qualification the utility model practical range.
Please in conjunction with Fig. 1-Fig. 4, the utility model provides a kind of recycling processing system that is used for the recirculated water sewer, comprises flocculation-flotation-filtering integral device, security personnel's strainer and frequently pole-reversing electroosmosis device, wherein,
Flocculation-flotation-filtering integral device is provided with flocculation zone 1, air flotation zone 4 and filtrating area 6, and flocculation zone 1 is provided with sewer inlet 11, and flocculation zone 1 links to each other with air flotation zone 4; A plurality of baffles 12 are set in the flocculation zone 1, and the spacing that is provided with of these baffles 12 increases gradually along water (flow) direction, and the spacing adjacent with air flotation zone 4 form exposure chamber 3, wherein is provided with the dissolved air water reliever 2 of dissolved air water releasing mechanism; Air flotation zone 4 is provided with slag scraper 5, slag-drip opening 51 and air flotation pool water port 41, and air flotation pool water port 41 links to each other with the filter tank water-in 62 of filtrating area 6 by pipeline 42; In the present embodiment filtrating area 6 by five be arranged in parallel and separate filter tank 61 form, and each filter tank is provided with filter tank water-in 62, backwash water water-in 63, filter tank water port 64 and the backwash water water port 65 of independent control, filter tank water-in 62 and backwash water water-in 63 communicate with air flotation pool water port 41 and backwash water water collecting basin by pipeline respectively, filter tank water port 64 links to each other with security personnel's strainer 7 by pipeline, also is connected with the backwash water water collecting basin by T-valve simultaneously;
The water outlet of security personnel's strainer 7 links to each other with frequently pole-reversing electroosmosis device 8.
In the flocculation-flotation-filtering integral device of the utility model treatment system, flocculation zone 1 is by the setting of three baffles 12, can realize the flow velocity of sewer, as shown in Figure 2, sewer inlet 11 links to each other with sewer water collecting basin 10 by pipeline, makes sewer enter treatment system (by sewer inlet 11 or flocculant concentration mouth 13 adding flocculation agent PAM on the pipeline before) through water pump lifting.In flocculation zone 1, because the interval of baffle 12 increases gradually along water (flow) direction, and make " S " type of mobile being of water body, like this, after sewer enters flocculation zone, water volume flow rate slows down so that stirring intensity weakens under the influence of baffle, is beneficial to the mixed flocculation formation flocs unit of water body and flocculation agent and impels colloid and particulate matter in the water body to take off surely.Flocculation zone 1 and air flotation zone 4 adjacent last baffle 12 spacing form exposure chamber 3, the dissolved air water contact action of the flocculation water after the flocculation reaction and 2 releases of dissolved air water reliever enters air flotation zone 4 jointly.
As shown in Figures 2 and 3, in the utility model treatment system, flocculation zone 1 and air flotation zone 4 are located at the top of filtrating area 6, and water body can rely on run by gravity to finish filtration in the filter tank, and it is compact that whole device is connected, and saved floor space.Air flotation zone 4 is conventional efficient air-floating apparatus, be provided with the reliever 2 that microbubble and dissolved air water are provided, it arrives dissolving 44 by pipeline connection, the moisturizing of dissolved air water then can be from air-float water or filter tank draining, so, can be to be provided with dissolved air water intake 43 at air flotation zone, also can be as shown in Figure 1, in the filter tank water port dissolved air water intake is set, will partly filters water outlet input dissolving 44; Same as the prior art, dissolving 44 connects air compressor machine 45 simultaneously, air compressor machine 45 provides the dissolved air water required air, as Fig. 1, dissolved air water be by air compressor machine 45 in dissolving 44, carry air and with reflux pump 46 in dissolving 44, carry from dissolved air water intake 43 or from obtaining after the dissolving of the water thorough mixing of filter tank water port.
As shown in Figure 2, be provided with filter material layer 60 in the filter tank of filtrating area 6, suitable backwash space is left on filter material layer 60 tops, backwash water water-in 63 and filtering basin water port 64 are located on the filter tank wall of filter material layer 60 belows, and filter tank water-in 62 and backwash water water port 65 are located on the filter tank wall of filter material layer 60 tops.Consult Fig. 4, in the flocculation-flotation-filtering integral device of present embodiment treatment system, filtrating area 6 by five independently filter tank 61 parallel connections constitute, each filter tank all is provided with filter tank water-in 62, backwash water water-in 63, filter tank water port 64 and the backwash water water port 65 that can independently control, these water-ins and water port all are communicated to main pipe rail by parallel pipeline, and utilize motorized valve control opening and closing.Five all independently water inlet and drainings of filter tank, the filtering traffic of commitment simultaneously provides postorder to produce water.Filter certain hour, successively backwash operation is taken turns in each filter tank, during a filter tank backwash, all the other four filter tank works better are also shared the flooding velocity of backwashing filter.Concrete operations can be (are example with first filter tank), close the motorized valve 602 of this filter tank water-in, stop this filter tank water inlet, keeping the motorized valve 604 of filter tank water port 64 opens, treat in this filter tank to close this motorized valve 604 after the emptied of water, open the motorized valve 603 of this filter tank backwash water water-in and the motorized valve 605 of this filter tank backwash water water port simultaneously, and chain promoter backwashing pump (not shown), backwash is carried out in this filter tank.In the whole backwash process, all the other four filter tanks keep normal operation, and product water is provided.Close the import and export motorized valve of backwash water after this filter tank backwash, open filter tank water-in motorized valve 602 and filter tank water port motorized valve 604, enter the normal filtration operation, certain hour carries out backwash to next filter tank so successively in proper order at interval.
Consult Fig. 1, in the utility model treatment system, the filter tank water port 64 of flocculation-flotation-filtering integral device links to each other with security personnel's strainer 7 by pipeline, makes from the suspended substance in the sewage of filtrating area 6 and is further dammed, to guarantee the influent quality of frequently pole-reversing electroosmosis.Security personnel's strainer of the present utility model does not have particular restriction, can be provided with the PP filter core that the aperture is 5 μ m in security personnel's strainer, and concrete structure and operation are routine techniques.According to arts demand, need add acid substance and Scale inhibitors this moment in water body, add mouth 71 so can be provided with the online of acid substance and Scale inhibitors in the pipeline, and string established lifting water pump 72 in the pipeline.
The water outlet of security personnel's strainer 7 links to each other with frequently pole-reversing electroosmosis device 8 by pipeline, makes through the water body after security personnel's filter process and enters the frequently pole-reversing electroosmosis device by appropriate desalination, and the product water of discharging from water port 83 provides circulating cooling make-up water.The pole plate 81 that is provided with in this frequently pole-reversing electroosmosis device 8, the structure of ion-exchange membrane 82, and the principle of work of this device is prior art.Character according to recirculated water and sewer thereof, recirculated water blowdown electrical conductivity of water≤4000 μ s/cm, total hardness≤1600mg/L, treatment system of the present utility model is in service, general control of the timed interval of falling utmost point 30min-2h, water outlet ratio of desalinization after frequently pole-reversing electroosmosis is handled reaches 70-90%, thereby has kept the required ion of circulating water system when the recirculated water sewer is handled, and satisfies the water quality requirement of recirculated water reuse water simultaneously.The ion-exchange membrane that is adopted can adopt product commonly used in the industry, generally, adopt the organic ion exchange membrane, for example, sulfonic acid type cation exchange membrane and quaternary amine type anion-exchange membrane, two kinds of membrane pore size are 1-10nm, do not allow water molecules to pass through, ion selects transmitance greater than 90%, concentrates with purification and the ion of finishing solution.

Claims (10)

1, a kind of treatment system of recirculated water sewer is characterized in that, described treatment system comprises flocculation-flotation-filtering integral device, security personnel's strainer and frequently pole-reversing electroosmosis device, wherein,
Flocculation-flotation-filtering integral device is provided with flocculation zone, air flotation zone and filtrating area, and flocculation zone links to each other with air flotation zone, and is provided with the sewer inlet; Air flotation zone is provided with dissolved air water releasing mechanism, slag scraping mechanism, slag-drip opening and air flotation pool water port, and the air flotation pool water port is communicated with the filter tank water-in of filtrating area by pipeline; Filtrating area is arranged in parallel by at least four and separate filter tank is formed, each filter tank is provided with filter tank water-in, backwash water water-in, filter tank water port and the backwash water water port of independent control, and filter tank water-in and backwash water water-in communicate with air flotation pool water port and backwash water water collecting basin by pipeline respectively, and the filter tank water port links to each other with security personnel's strainer by pipeline;
The water outlet of security personnel's strainer links to each other with the frequently pole-reversing electroosmosis device.
2, the treatment system of recirculated water sewer according to claim 1 is characterized in that, described filtrating area is arranged in parallel by five or six and separate filter tank is formed.
3, the treatment system of recirculated water sewer according to claim 1 is characterized in that, the sewer that at least two baffles of flocculation zone setting, this baffle can make input is stirred because of the change of flow velocity.
4, the treatment system of recirculated water sewer according to claim 1 is characterized in that, in described flocculation-flotation-filtering integral device, flocculation zone and air flotation zone are positioned at filtrating area top.
5, the treatment system of recirculated water sewer according to claim 1, it is characterized in that, described air flotation zone is provided with the dissolved air water intake, and arrives dissolving by pipeline connection, and described dissolved air water releasing mechanism comprises the dissolved air water reliever that is communicated with the dissolved air water outlet of dissolving.
6, the treatment system of recirculated water sewer according to claim 1 is characterized in that, the filter tank water port is communicated with dissolving by pipeline, and described dissolved air water releasing mechanism comprises the dissolved air water reliever that is communicated with the dissolved air water outlet of dissolving.
7, the treatment system of recirculated water sewer according to claim 1, it is characterized in that, be provided with filter material layer in the filter tank of described filtrating area, backwash water water-in and filter tank water port are located on the filter tank wall of filter material layer below, and filter tank water-in and backwash water water port are located on the filter tank wall of filter material layer top.
8, according to the treatment system of claim 1 or 7 described recirculated water sewers, it is characterized in that, be serially connected with the lifting water pump in filter tank water port and the connecting pipeline of security personnel between the strainer, and, acid substance be provided with in the pipeline and Scale inhibitors adds mouth.
9, the treatment system of recirculated water sewer according to claim 3 is characterized in that, at least three baffles of flocculation zone setting, and the spacing between the adjacent screen increases gradually along water (flow) direction.
10, the treatment system of recirculated water sewer according to claim 1 is characterized in that, described flocculant concentration mouth is positioned on sewer ingress or the sewer inlet pipeline before.
CN2009201075264U 2009-04-22 2009-04-22 Treatment system of wastewater from circulating water Expired - Lifetime CN201400615Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
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CN102247726A (en) * 2010-05-17 2011-11-23 北京四方鼎泰环保科技有限公司 Self-washing multi-chamber filter
CN103130363A (en) * 2011-11-28 2013-06-05 通用电气公司 Desalination system and desalination method
CN105347569A (en) * 2015-11-30 2016-02-24 无锡工源机械有限公司 Air-flotation, filtering and membrane-filtering treatment device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN103130363A (en) * 2011-11-28 2013-06-05 通用电气公司 Desalination system and desalination method
CN105347569A (en) * 2015-11-30 2016-02-24 无锡工源机械有限公司 Air-flotation, filtering and membrane-filtering treatment device

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