CN103990311A - Sewage impurity separation method capable of realizing cyclic on-line cleaning - Google Patents
Sewage impurity separation method capable of realizing cyclic on-line cleaning Download PDFInfo
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- CN103990311A CN103990311A CN201410173345.7A CN201410173345A CN103990311A CN 103990311 A CN103990311 A CN 103990311A CN 201410173345 A CN201410173345 A CN 201410173345A CN 103990311 A CN103990311 A CN 103990311A
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Abstract
The invention relates to a sewage impurity separation method capable of realizing cyclic on-line cleaning. The method comprises the following concrete steps that: sewage enters an impurity screening zone from a water inlet pipe, sewage enters a concentration impurity zone at first, and after an effective liquid level is reached in the concentration impurity zone, effluent penetrating a mobile micro-screen enters into a water outlet area which seems to be wrapped by two layers of mobile micro-screen, is then collected by a water outlet pipe and is discharged from a system or enters a next-stage screening system; an aeration pipe located at the bottom of the impurity screening zone uninterruptedly washes the mobile micro-screen, and the mobile micro-screen is driven by a drive unit to cyclically pass through the impurity screening zone, a slag clearing zone, a washing zone and a soup soaking zone, wherein the filtering performance of the mobile micro-screen is recovered on line; and concentrated impurities are regularly discharged through a slag removal pump or valve and then enter an impurity gathering device. Since an intermittent slag removal mode is employed, the impurity screening zone always has a lowest liquid level; as the liquid level in the impurity screening zone rises, the area of the micro-screen in a filtering state increases, so the problem of decrease in water permeability of the micro-screen caused by rise in impurity concentration in the period of rising of the liquid level in a reactor is overcome.
Description
Technical field
The present invention relates to a kind of sewage impurity separation method of on-line cleaning capable of circulation, relate to the technology of removing impurity in water in water treatment procedure, relate in particular to particle diameter in water less, be difficult to the impurity removed by traditional fine fack, removal, river course cleaning scum silica frost, the sand water that is applicable to impurity in pretreatment, rainfall pumping station or the confluence of rainwater and sewage pumping plant initial stage CSO overflow of sewage in municipal wastewater treatment plant separate and similar water body in impurity separate.
Background technology
Along with the raising of urban life level and the increase day by day of dirt (giving up) water discharge capacity, in the water inlet of municipal wastewater treatment plant, organic and inorganic impurity and solubilised state material are also complicated, diversified gradually, be less than 1mm and wherein permit polymictic effective grain size, as hair, cotton-wool, sand grains, plastic sheet, animal scurf etc., these granule impurity are difficult to by traditional fine fack (pitch 2-3mm) interception, thereby enter follow-up biological reaction pool and sludge treating system with current; Wherein, heavy impurity will deposit in structures bottom, and accumulate along with the prolongation in process operation cycle; In sludge treating system, these impurity due to the concentrated effect of mud by enrichment, thereby affect stability and the service life of the operation of pipe-line system and treatment facility.
At present, more domestic large-scale wastewater treatment plants (as Shanghai White dragon port Sewage Plant, Chongqing realgar Sewage Plant etc.) ubiquity setting pot treatment effect is not good, and the problem that the difficult sedimentation of ultra-fine sand is removed causes in mud sand content larger; Have report to point out, in mud, sand content is about 20% ~ 50%.And sand grains will greatly reduce the dischargeable capacity of pond body in the accumulation of biochemistry pool and sludge treating system, aerator is had a negative impact, the wearing and tearing of aggravation water pump and dehydration equipment, and affect flocculating effect and reduce mud and become cake rate.Therefore,, in the upgrading of Sewage Plant, strengthening and refinement sand setting are processed into the design considerations important for.
And in rainfall pumping station and confluence of rainwater and sewage system, owing to containing undressed sanitary sewage, industrial wastewater and rainfall runoff in the overflow of interflow, the concentration of various pollutants and particle is larger, and interflow spillway discharge is large, becomes one of primary pollution source of receiving water body.For reducing the direct pollution of confluence of rainwater and sewage overflow to natural water body, often increase the coagulation such as mechanical grille, rotational flow grit chamber structures.And rainfall is conventionally very inhomogeneous, cause rainfall runoff changes in flow rate very large, make setting pot hydraulic load high, particle removal effect is not good.
For the separation of impurity in sewage (rainwater, confluence of rainwater and sewage, river course water etc.), in project practices at home and abroad, conventional method has mechanical fine fack, cyclone separator, hair filter etc., but because grid pitch is larger, generally can only be greater than impurity more than 1mm by partition size; Rotational flow grit chamber is not water-fast stroke load, and not good to ultra-fine sand removal effect; Hair filter is mainly tackled larger solid sundries in water, bad to separating the fine particulates treatment effects such as sand grains.Before domestic also have impurity isolation technics and a method in some water of researching and developing for this type of fine particle, though can reach good removal effect to these compared with the particle of small particle diameter, but long-term operation often needs filtering material to carry out off-line cleaning (or interrupting device operation) to recover its handling property, may cause equipment short-term disposal ability to decline.Therefore, develop preprocess method energy-efficient, that automatic controlling level is high and synchronously impurity separates in the water of on-line cleaning and have positive effect for pollution control, the improvement of River Landscape etc. of Sewage Plant upgrading, confluence of rainwater and sewage system.
Summary of the invention
The object of the invention is to provide a kind of and can effectively the organic and inorganic impurity of different-grain diameter in water be separated, reduce its accumulation, wearing and tearing, the reduction confluence of rainwater and sewage overflow pollution to river water body of minimizing to sludge treatment device administrating system in follow-up biosystem, river training water landscape, and there is synchronous function of on-line cleaning, the sewage impurity separation method of the cleaning capable of circulation that reduced investment and operation energy consumption are low.
The sewage impurity separation method of the cleaning capable of circulation that the present invention proposes, sieve and the realization of synchronous cleaning system by impurity, wherein: impurity screening and synchronous cleaning system are by impurity screening district 1, microgrid Screen assemblies, liquid soak zone 3, drive unit 6, aeration tube 10, scarfing cinder groove 7 and cleaning hose 9 form, between impurity screening district 1 and liquid soak zone 3, be provided with rinsing area 2, microgrid Screen assemblies is by mobile microgrid 4, roller bearing 5 and pool wall microgrid draw-in groove 18 form, impurity screening and both sides, synchronous cleaning system top are provided with roller bearing 5, in impurity screening district 1 and liquid soak zone 3, be provided with two rows and be fixed on the roller bearing 5 of pool wall, described two rows roller bearing 5 cross arrangements, mobile microgrid 4 structure ringwise, mobile microgrid 4 is first walked around the roller bearing 5 that impurity screening and both sides, synchronous cleaning system top are provided with, then according to up and down back and forth folding mode walk around successively the two rows roller bearing 5 being fixed on impurity screening district 1 and liquid soak zone 3, mobile microgrid 4 connecting drive devices 6, under drive unit 6 effects, mobile microgrid 4 does loopy moving, pool wall microgrid draw-in groove 18 is installed on respectively in impurity screening district 1 and liquid soak zone 3, and described pool wall microgrid draw-in groove 18 and mobile microgrid 4 edges laminatings, make impurity can not see through described edge, and can make mobile microgrid 4 move up and down, be divided into Shen contracting impurity range and microgrid exhalant region by the mobile microgrid and the whole impurity screening of the two rows roller bearing district 1 that fold back and forth up and down, the region being made up of vertically arranged mobile microgrid 4 and pool wall microgrid draw-in groove 18 is microgrid exhalant region, and remainder is concentrated impurity range, impurity screening 1 bottom, district is provided with aeration tube 10, impurity screening 1 top, district is provided with scarfing cinder groove 7, and scarfing cinder groove 7 tops arrange cleaning brush 8, 2 tops, rinsing area are provided with cleaning hose 9, impurity separates 1 top one side and is provided with water inlet pipe 11, and bottom one side is provided with concentrated impurity outflow tube 13, and concrete steps are as follows:
Sewage enters impurity screening district from water inlet pipe, be introduced into the concentrated impurity range that is positioned at impurity screening district, when reaching effective liquid level in concentrated impurity range, refer to make to overcome after microgrid resistance liquid level higher than the liquid level of outlet pipe, owing to folding up and down the mobile microgrid of arranging, the impurity that is greater than mobile microgrid aperture is tackled in concentrated impurity range, see through the water outlet of mobile microgrid and enter picture by the outlet area of two-layer mobile microgrid parcel, discharge system or enter next stage screening system after outlet pipe is collected; The aeration tube that is positioned at bottom, impurity screening district washes away mobile microgrid incessantly, makes mobile microgrid surface produce Osima jacoti, Osima excavata, prevents that impurity is in mobile microgrid surface attachment, prevents that concentrated impurity from sinking to the bottom simultaneously; Meanwhile, mobile microgrid is driven by drive unit, circulation experience impurity screening district, scarfing cinder district, rinsing area and liquid soak zone; When mobile microgrid enters scarfing cinder groove from impurity screening district, mobile microgrid is under the scrubbing of cleaning brush, and the hair and the fine impurities that are embedded on a small quantity on mobile microgrid are mended removal, when mobile microgrid enters rinsing area, further remove the impurity in mobile microgrid hole; When mobile microgrid enters liquid soak zone, the organic contamination Impurity removal of long-term accumulation on mobile microgrid; Mobile microgrid strainability is recovered online in this process; Concentrated impurity is regularly discharged and is entered impurity gathering-device by deslagging pump or valve; In running, adopt the intermittently mode of deslagging, the liquid level in impurity screening district is always by minimum liquid level, it is extremely the highest liquid level of concentrated impurity range liquid level rising after deslagging, the deslagging of setting starts liquid level, and following reaction device liquid level is reduced to rapidly minimum liquid level because of deslagging, in impurity screening district, liquid level rises, in the microgrid area change of filtration condition, can make up the problem that between impurity screening district's liquid level rising stage, impurity concentration rising causes microgrid water permeable ability to decline.
In the present invention, described impurity screening district adopts single-stage screening, two-stage series connection screening or plural serial stage screening district according to handling object, in every grade of impurity screening district, one section or multistage impurity screening district is set, and wherein the series connection of multistage impurity screening district arranges.
In the present invention, in the time that impurity screening district is the screening district of plural serial stage composition, every grade of screening district selects the microgrid film of different pore size, the aperture of microgrid film is 0.01 mm ~ 1.0mm, microgrid film is the material with certain surface fineness, mechanical strength and uniform pore size, as terylene, polyamide fibre or nylon wire.
The inventive method has interception fine particle, feature that water flux is large according to microgrid, gravel, tiny organic matter etc. in water are tackled in reactor, regularly will concentrate impurity by liquid level control and discharge at short notice reactor, microgrid water outlet gravity flow enters next stage impurity piece-rate system or directly enters subsequent treatment unit, microgrid circulation experience mobile in this process is filtered---cleaning---process of filtration, in the cleaning of synchronously carrying out microgrid of operation, avoid long-term high strength operation to make microgrid pollute unmanageable hidden danger.
The inventive method has stronger adaptive capacity to the fluctuation of inflow, in the time that inflow is relatively stable, whole system operating procedure is as follows: process water and enter behind impurity screening district, liquid level rising in reactor, the impurity that is greater than microgrid aperture is trapped in concentrated impurity range by microgrid separator, the water outlet gravity flow that sees through microgrid enters next stage screening plant or subsequent treatment unit, in this process, impurity is in concentrated impurity range enrichment, concentration constantly raises, when liquid level rises to design when the highest liquid level, start deslagging water pump or open slag-discharging valve, now in reactor, liquid level declines rapidly, concentrated impurity is discharged from reactor, until liquid level reaches design minimum liquid level in reactor, deslagging stops, and so forth, due to during microgrid in mobile status, even so there is part microgrid to be exposed in air, but can submerge again soon in water, the phenomenon that can not cause microgrid long term exposure to become dry in air, when constantly rising due to concentrated impurity concentration simultaneously, microgrid effective filtration area is also in continuous increase, alleviate and separated the phenomenon that in late phase reaction device, liquid level rising is accelerated.In the time that inflow short-term increases, in reactor, the liquid level rate of climb can increase to some extent, and the deslagging cycle shortens, and in ensureing effluent characteristics, the rate of recovery of microgrid water outlet can decrease, and recovers when the water yield, and the rate of recovery also can be brought up to previous level.In the time that inflow short-term reduces, in reactor, the liquid level rate of climb reduces even to decline, and the deslagging cycle increases, and concentrated impurity concentration is higher than design load, and the microgrid water outlet rate of recovery raises.Device can be resisted the short-term fluctuation of inflow, when the long-term off-design water yield of inflow, can, by adjusting the highest liquid level of reactor, control bed drain purge the rate of recovery of controlling microgrid water outlet, make it reach processing requirements.
Beneficial effect of the present invention is:
(1) impurity separation method of the present invention is not only applicable to carry out the separation of different-grain diameter impurity in the similar water bodys such as sewage, confluence of rainwater and sewage and river course water, and separation accuracy is high, and treatment effect is good, and automaticity is high; Also be applicable to that Impurity removal, river course cleaning scum silica frost, sand water in pretreatment, rainfall pumping station or the confluence of rainwater and sewage pumping plant initial stage CSO overflow of sewage in municipal wastewater treatment plant separates and similar materials in the separation of impurity, applied widely, treatment effect is good.
(2) impurity separation method of the present invention can be according to water treatment requirement, design one or more levels screening system, select flexibly microgrid material and aperture, improve separation accuracy and treatment effect, the processing at microgrid edge and the design of semitight, not only ensured good filter effect but also met the requirement that microgrid moves.Microgrid separation process is aided with bottom aeration, hairbrush cleaning, high pressure water flushing, Chemical cleaning, can ensure that microgrid has stable water flux and longer off-line cleaning frequency.
(3) impurity separation method of the present invention adopts the water outlet of flowing automatically under Action of Gravity Field, can adjust flexibly the deslagging cycle according to the fluctuation of inflow, has stronger water resistant power impact load ability; And save the investment that water pump and relevant device, effectively saved energy consumption.
(4) impurity separation method of the present invention utilizes mobile microgrid to replace traditional hard-wired microgrid, makes to filter to synchronize in time with cleaning spatially separation, makes cleaning means more diversified, and cleaning performance is better, has avoided causing while cleaning the embarrassment of stopping production.
(5) impurity separation method of the present invention can be designed to one or more snippets reactor to carry out step by step impurity concentrated, improves sewage and reclaims
(6) compact equipment in preprocess method of the present invention, floor space is little, reduced investment, operation energy consumption is low, and easy maintenance, operating personnel is required low.
Brief description of the drawings
Accompanying drawing is embodiment of the present invention schematic diagram, the inventive method is not limited.
Fig. 1 is structure and the operation principle schematic diagram of impurity separation method impurity screening of the present invention and synchronous cleaning system;
Number in the figure: 1. impurity screening district, 2. rinsing area, 3. liquid soak zone, 4. move microgrid, 5. roller bearing, 6. drive unit, 7. scarfing cinder groove, 8. cleaning brush, 9. cleaning hose, 10. aeration tube, 11. water inlet pipes, 12. outlet pipes, 13. concentrated impurity outflow tubes, 14. concentrated impurity, 15. microgrid water outlets, 16. flushing waters, 17. chemical agents, 18. pool wall microgrid draw-in grooves.
Detailed description of the invention
Further illustrate by reference to the accompanying drawings the present invention below by embodiment.
Embodiment 1: sewage impurity separation method adopts impurity screening and synchronous cleaning system, impurity screening and synchronous cleaning system are made up of impurity screening district 1, microgrid Screen assemblies, drive unit 6, aeration tube 10, scarfing cinder groove 7, cleaning hose 9 and liquid soak zone 3.Microgrid Screen assemblies is specifically by mobile microgrid 4, roller bearing 5 and pool wall microgrid draw-in groove 18 form, mobile microgrid 4 is made up of microgrid film, the aperture of microgrid film is 0.01mm ~ 1.0mm, require to arrange according to water treatment, microgrid film can be terylene, in polyamide fibre or nylon etc. any, mobile microgrid 4 is vertically back and forth walked around the roller bearing 5 that is fixed on pool wall, under the drive of drive unit 6, do loopy moving, direction is as shown in Fig. 1 upper arrow, at pool wall, pool wall microgrid draw-in groove 18 is installed simultaneously, with mobile microgrid 4 edge laminatings, reach the effect that cuts off concentrated impurity 14 and microgrid water outlet 15, make impurity can not pass through this edge, can make again microgrid move up and down, aerator 10 is arranged on impurity screening 1 bottom, district, can produce Osima jacoti, Osima excavata on microgrid surface, prevents that impurity is in microgrid surface attachment, can prevent that impurity is in reactor 1 bottom deposition simultaneously, slag cleaning device 7 is installed on after Screen assemblies, and in the process contacting with cleaning brush 8 at microgrid, the hair and the fine impurities that are embedded on a small quantity in microgrid hole are removed, and scarfing cinder groove is from pool wall opening deslagging, be installed on the cleaning hose 9 after slag cleaning device 7, by being located at the pressure washing water pipe 9 of microgrid top, further remove the impurity in microgrid hole, rush this twice matting through cleaning brush 8 and cleaning hose 9 water, the water permeable ability of mobile microgrid 4 is restored, when after device long-play, when front twice matting can not make microgrid performance recovery completely, can carry out liquid cleaning to mobile microgrid 4, mobile microgrid 4 slowly passes through liquid soak zone 3 under drive unit 6 drives, on mobile microgrid 4, the organic contamination impurity of long-term accumulation is removed during this period, and mobile microgrid 4 stopping states are alleviated.The major control of impurity gathering system concentrates impurity discharge capacity, concentrated rear impurity can be selected water pump or two kinds of control modes of valve according to follow up device, deslagging time and bed drain purge are by the liquid level control in impurity screening district 1, it is controlled liquid level and chooses according to impurity concentrating degree, liquid level when deslagging starts is higher, the deslagging cycle longer, impurity concentrating degree is higher.After concentrated impurity is exhausted from system, can further sieve, filtrate can be sneaked into microgrid water outlet and be entered follow-up biological treatment system herein, and filter residue is by transporting outward equipment output system.
Claims (2)
1. the sewage impurity separation method of a cleaning capable of circulation, it is characterized in that sieving and the realization of synchronous cleaning system by impurity, wherein: impurity screening and synchronous cleaning system are sieved district (1) by impurity, microgrid Screen assemblies, liquid soak zone (3), drive unit (6), aeration tube (10), scarfing cinder groove (7) and cleaning hose (9) composition, between impurity screening district (1) and liquid soak zone (3), be provided with rinsing area (2), microgrid Screen assemblies is by mobile microgrid (4), roller bearing (5) and pool wall microgrid draw-in groove (18) composition, impurity screening and both sides, synchronous cleaning system top are provided with roller bearing (5), in impurity screening district (1) and liquid soak zone (3), be provided with the roller bearing (5) that two rows are fixed on pool wall, described two rows roller bearing (5) cross arrangement, mobile microgrid (4) structure ringwise, mobile microgrid (4) is first walked around the roller bearing (5) that impurity screening and both sides, synchronous cleaning system top are provided with, then according to up and down back and forth folding mode walk around successively the two rows roller bearing (5) being fixed in impurity screening district (1) and liquid soak zone (3), mobile microgrid (4) connecting drive device (6), under drive unit (6) effect, mobile microgrid (4) does loopy moving, pool wall microgrid draw-in groove (18) is installed on respectively in impurity screening district (1) and liquid soak zone (3), described pool wall microgrid draw-in groove (18) and the laminating of mobile microgrid (4) edge, make impurity can not see through described edge, and can make mobile microgrid (4) move up and down, be divided into Shen contracting impurity range and microgrid exhalant region by the mobile microgrid and the whole impurity screening district of two rows roller bearing (1) that fold back and forth up and down, the region being made up of vertically arranged mobile microgrid (4) and pool wall microgrid draw-in groove (18) is microgrid exhalant region, and remainder is concentrated impurity range, bottom, impurity screening district (1) is provided with aeration tube (10), impurity screening top, district (1) is provided with scarfing cinder groove (7), and scarfing cinder groove (7) top arranges cleaning brush (8), top, rinsing area (2) is provided with cleaning hose (9), impurity separates (1) top one side and is provided with water inlet pipe (11), and bottom one side is provided with concentrated impurity outflow tube (13), and concrete steps are as follows:
Sewage enters impurity screening district from water inlet pipe, be introduced into the concentrated impurity range that is positioned at impurity screening district, when reaching effective liquid level in concentrated impurity range, refer to make to overcome after microgrid resistance liquid level higher than the liquid level of outlet pipe, owing to folding up and down the mobile microgrid of arranging, the impurity that is greater than mobile microgrid aperture is tackled in concentrated impurity range, see through the water outlet of mobile microgrid and enter picture by the outlet area of two-layer mobile microgrid parcel, discharge system or enter next stage screening system after outlet pipe is collected; The aeration tube that is positioned at bottom, impurity screening district washes away mobile microgrid incessantly, makes mobile microgrid surface produce Osima jacoti, Osima excavata, prevents that impurity is in mobile microgrid surface attachment, prevents that concentrated impurity from sinking to the bottom simultaneously; Meanwhile, mobile microgrid is driven by drive unit, circulation experience impurity screening district, scarfing cinder district, rinsing area and liquid soak zone; When mobile microgrid enters scarfing cinder groove from impurity screening district, mobile microgrid is under the scrubbing of cleaning brush, and the hair and the fine impurities that are embedded on a small quantity on mobile microgrid are mended removal, when mobile microgrid enters rinsing area, further remove the impurity in mobile microgrid hole; When mobile microgrid enters liquid soak zone, the organic contamination Impurity removal of long-term accumulation on mobile microgrid; Mobile microgrid strainability is recovered online in this process; Concentrated impurity is regularly discharged and is entered impurity gathering-device by deslagging pump or valve; In running, adopt the intermittently mode of deslagging, the liquid level in impurity screening district is always by minimum liquid level, it is extremely the highest liquid level of concentrated impurity range liquid level rising after deslagging, the deslagging of setting starts liquid level, and following reaction device liquid level is reduced to rapidly minimum liquid level because of deslagging, when in impurity screening district, liquid level rises, in the microgrid area change of filtration condition, make up impurity concentration rising between the reactor liquid level rising stage and cause microgrid water permeable ability to decline.
2. the sewage impurity separation method of cleaning capable of circulation according to claim 1, it is characterized in that described impurity screening district adopts single-stage screening, two-stage series connection screening or plural serial stage screening district according to handling object, in every grade of impurity screening district, one section or multistage impurity screening district are set, and wherein the series connection of multistage impurity screening district arranges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410173345.7A CN103990311A (en) | 2014-04-28 | 2014-04-28 | Sewage impurity separation method capable of realizing cyclic on-line cleaning |
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| CN201410173345.7A CN103990311A (en) | 2014-04-28 | 2014-04-28 | Sewage impurity separation method capable of realizing cyclic on-line cleaning |
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| CN107671067A (en) * | 2017-11-13 | 2018-02-09 | 重庆洁邦电器有限公司 | It is a kind of that there is the cleaning machine for increasing journey cyclic water tank |
| CN108686518A (en) * | 2018-05-04 | 2018-10-23 | 北京碧水源膜科技有限公司 | A kind of continuous filter plant of automatically cleaning and automatically cleaning continuous filtration pool |
| CN108773926A (en) * | 2018-06-02 | 2018-11-09 | 黄开荣 | A kind of sustainable production equipment for purified water used |
| CN111530149A (en) * | 2020-05-21 | 2020-08-14 | 吴增敏 | Sewage treatment device of large-scale sewage treatment station |
| CN113350851A (en) * | 2021-06-11 | 2021-09-07 | 晋奎 | Sewage filtering device used in sewage discharge pipeline |
| CN115784518A (en) * | 2022-12-14 | 2023-03-14 | 江苏新之阳新能源科技有限公司 | Filter equipment for industrial sewage treatment |
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| CN113350851A (en) * | 2021-06-11 | 2021-09-07 | 晋奎 | Sewage filtering device used in sewage discharge pipeline |
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Application publication date: 20140820 |