CN1325138C - Device for removing suspended matter in water - Google Patents
Device for removing suspended matter in water Download PDFInfo
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- CN1325138C CN1325138C CNB031340075A CN03134007A CN1325138C CN 1325138 C CN1325138 C CN 1325138C CN B031340075 A CNB031340075 A CN B031340075A CN 03134007 A CN03134007 A CN 03134007A CN 1325138 C CN1325138 C CN 1325138C
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- filtrate
- water
- washer
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- tank body
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Abstract
The present invention provides a filtering device for removing suspended substances in water, which comprises a tank body, an overflow cofferdam, a drain pipe, a water inlet pipe, a water distributor, a filtering material washer, a commutating body, a filtering material distributor, a filtering material circulating lifting pipe and an air distributor, and in addition, a suspended substance separator is arranged between the outlet of the filtering material circulating lifting pipe and the filtering material washer. The suspended substance separator structurally mainly comprises a plane or curved oblique porous sieve plate or sieve, and a water collecting tank and a sewage drain pipe communicated with the water collecting tank are arranged below the sieve plate or sieve. The suspended substance separator is used for separating a majority of suspended substances in filtering materials to be washed and water quantity carried in the process of lifting the filtering materials and is also used as a sewage draining system, and washing water for washing the filtering materials is circulated back to the filtering device. Compared with the prior art, the present invention has the characteristics of high quality of drained water, high water yield, small water draining quantity, high cycles of the concentration of sewage drained outside, and is favorable for further utilizing or treating sewage drained outside.
Description
Technical field
The present invention is a kind of water treatment facilities, more specifically says so and removes the filter of suspension in the water.
Background technology
Filtration is as one of the removal means of suspension in the water, owing to have the good removal effect and the high processing degree of depth, not only in city or trade effluent advanced treating and reusing sewage processing, be used widely, and be that the equipment that processes such as (as running water, industrial fresh water, boiler feedwater), recirculated cooling water processing generally adopt is handled in city and industrial water supply.
Filter is removed the mechanism of suspension, mainly is to utilize the micro-pore that filters bed inside, and particulate contaminants in the trap water, its course of work comprises filters and two processes of filtrate cleaning.According to different conditions such as filtrate, filtering velocity, water (flow) direction, the bed depth, current motive forces, filter can mark off number of different types.If according to whether moving of filter medium in the filter process, then can reduce two types of fixed bed and moving beds.
The fixed bed filtering device mainly relies on the filter bed top layer to hold back suspension to the filtrate of 300～400mm below the top layer, and not only pollutant holding capability is low, and in use, exists obviously and the shortcoming that can't overcome.One of shortcoming is to realize continuous filtration product water, i.e. filtration can not be carried out simultaneously with backwash, filters with backwash process manually or to automatically switch; Two of shortcoming is general washing or the air-water backwashing mode of adopting when being the filtrate cleaning, needs high-power flushing water pump; Three of shortcoming is no matter to adopt which kind of cleaning way, and filtrate all is difficult for thoroughly cleaning up, and the result is along with the prolongation of time, the filtrate conglomeration, and water-flowing amount descends, and the effluent quality variation finally quits work, and changes filtrate; Four of shortcoming is the time length of filter cycle, and the influence of being advanced concentration of suspension height in the water is bigger, can't fix or prolong, and when concentration of suspension is higher in sewage, can not keep long-time filtration, and backwash is frequent, and aquifer yield is low.Chinese patent 94217260 discloses a kind of fluid bed reversely-washing filter, adopts liftable filtrate extruding disk, and extruding disk moves up when backwash, uses high-speed water jets to wash away filtrate, makes filtrate journey fluidized state, wash away the back with extruding disk with the filtrate compacting.This filter is intermittent operation in use, and the problems referred to above do not have fine solution.
Moving bed filter can solve the problem that the fixed bed fixed bed exists, and realizes continued operation, prevents filtrate caking etc.US4126546 discloses a kind of moving bed filter, and its filtrate circularly enhancing pipe is arranged on filter interior central authorities.Disclosed moving bed filter such as US5462654, US4891142, filtrate circularly enhancing pipe also is arranged on filter interior central authorities, and filtrate is identical with the flow direction, and draining is arranged in the screen net structure in the filter material layer; Its concurrent flow makes the suspension in the waste water hold back weak effect, and suspension easily passes screen net structure with filtering water outlet, and not only effluent quality is poor, and easily causes silk screen to stop up; The filter space flow is weak even stop to cause " dead angle " below the screen net structure, does not play a role in filtering, and the filter space utilization rate is low.US5746913, US5277829 etc. disclose a kind of moving bed filter, and filtrate circularly enhancing pipe is arranged on the filter outside.Above-mentioned moving bed filter has following common weak point: 1, simple liquid-solid reflux type is all adopted in the washing of filtrate, the washer unreasonable structure, filtrate is skewness in washer, can not fully contact with washings, the easy short circuit of rinse water, it is big not only to clean the water yield, and clean result is difficult to guarantee, and then influences effluent quality.2, the sewage of filter discharge is all or part of filtrate washings of discharging from the filtrate washer, and the suspension cycles of concentration in the draining is low, and the externally discharged waste water amount is bigger, is unfavorable for the further processing and the utilization of suspension; If part filtrate washings are looped back filter, reduce outer discharge capacity, then can influence the filtration effluent quality.
Summary of the invention
At the deficiencies in the prior art, the invention provides that a kind of effluent quality is good, producing water ratio is high, blowdown flow rate is little, sewage cycles of concentration height, help the moving bed filter that externally discharged waste water further utilizes or handles.
Moving bed filter of the present invention is provided with the suspension separator between outlet of filtrate circularly enhancing pipe and filtrate washer except that comprising tank body, overflow cofferdam and drainpipe, water inlet pipe and water-locator, filtrate washer, rectification body, filtrate distributor, filtrate circularly enhancing pipe and air sparger.Wherein tank body is a tube structure, and the filtrate outlet is arranged at the bottom, and water inlet pipe is arranged at the tank body middle and lower part, and the part of water inlet pipe in tank body is provided with water-locator.The overflow cofferdam is the sleeve circulus of upper opening, is arranged on top, tank body outside, and the cofferdam height need surpass the tank body upper edge, and drainpipe communicates with the overflow cofferdam.The filtrate washer is arranged on the tank body internal upper part, and filtrate washing water outlet mixes with former water or enters the position that filter bottom exports near filtrate.It is outside or inner that filtrate circularly enhancing pipe is arranged on tank body, and circularly enhancing pipe bottom is provided with and promotes the air sparger that filtrate is used.Except that the suspension separator, other member of the present invention also can adopt structure well known in the art.
Key of the present invention is between filtrate circularly enhancing pipe and filtrate washer the suspension separator to be set.By the suspension separator, the entrained water yield in most suspended substances in the filtrate to be cleaned and the filtrate lifting process is separated, and discharged system as sewer; The filtrate washings of washer then circulate and are back to filter.The structure of suspension separator mainly comprises the inclination porous sieve plate (or screen cloth) of plane or curved surface, water leg below the sieve plate and the sewage drainage pipe that communicates with it.The suspension separator is arranged at the position that is higher than the filtrate washer, and the upper end outlet of filtrate circularly enhancing pipe places the high-end of inclination porous sieve plate, and the low side of inclination porous sieve plate and filtrate washer link.The angle of inclination porous sieve plate should make filtrate slide smoothly, and general and horizontal angle is 15 °～75 °, is preferably 30 °～60 °.The bore dia of sieve plate can be selected according to the size of filtering material particle diameter (D), generally can be 0.001D～0.8D, is preferably 0.05D～0.6D.
Compared with prior art, the present invention has following characteristics:
(1) washer can be selected the deflection plate type, guaranteed that filtrate is evenly distributed, and fully contacted with washings that not only clean result is good, and effluent quality is good.
(2) adopt the suspension separator, very effective filtrate and trapped substance separation process have been finished once, the sewage of discharging only is the part of the entrained water yield in the filtrate lifting process, not only the sewage quantity of Pai Chuing is few, producing water ratio is high, and because of the concentration of suspension height, the externally discharged waste water cycles of concentration is also high, helps further utilizing or handling externally discharged waste water.
When (3) filtrate further cleaned in washer, pollutant levels reduced greatly in the washings, and the water yield is few, can recycle back filter, final water rate of recovery height.
(4) the suspension separator can make the pressure air of circulation filtrate fully discharge, and makes filtrate flow into washer equably, helps the stable of clean result, guarantees effluent quality.
Description of drawings
Fig. 1 is a kind of specific embodiment structural representation of filter of the present invention.Wherein, 2 is that filter tank body, 11 and 12 is that filtrate circularly enhancing pipe, 13 is that suspension separator, 18 is the filtrate washer.
The specific embodiment
Filter of the present invention is based on tank body, and other member is on demand attached on the tank body relevant position.Concrete structure is: tank body is a tube structure, and the bottom adopts the inclined-plane or the conical surface to form the filtrate outlet.The overflow cofferdam is the sleeve circulus of upper opening, is arranged on top, tank body outside, and the cofferdam height need surpass the tank body upper edge.Drainpipe communicates with the overflow cofferdam.Water inlet pipe is arranged at the tank body middle and lower part, and the part of water inlet pipe in tank body is provided with water-locator.The filtrate washer is arranged on tank body internal upper part middle position, and washer top is provided with circulation filtrate inlet and cleaning solution outlet; The washings outlet communicates with the washings drainpipe, and the valve of control cleaning solution consumption is set on the washings drainpipe; The washer bottom center is provided with the filtrate outlet, and lower side can be provided with the cleaning solution inlet; Can empty barrel structure in the washer, but structure such as baffling swash plate preferably is set, filtrate forms waterfall stream between two adjacent baffling swash plates.It is outside or inner that filtrate circularly enhancing pipe is arranged on tank body, preferably is arranged at the outside, communicates with the outlet of tank body filtrate below, and it is high-end that the top outlet is positioned at suspension separator inclination porous sieve plate.The filtrate outlet of suspension separator communicates with washer.The riser bottom is provided with and promotes the primary air distributor that filtrate is used, and some auxiliary air distributors are set on the riser again, amounts to 1～10, and preferred 2～5, the distance between each air sparger is same or different, and is preferably identical.
The water that above-mentioned suspension separator is separated, discharge filter, the washings that washer is discharged then return filter.
Diverse location is provided with a plurality of air spargers on the above-mentioned filtrate riser, can overcome the problem that the filtrate compacting can't be restarted in the back filtrate riser of stopping work, and starts filter smoothly by starting the air sparger of diverse location successively, can making things convenient for.And increased filtrate probability of friction mutually in course of conveying, and help pollutant with filtrate is peeled off, prevent that filtrate is agglomerating, the filtrate after the cleaning is kept all the time as new state.
The filtrate deflection plate is set in the above-mentioned washer, can improves the detersive efficiency of filtrate greatly, reduce the washing water yield, guarantee effluent quality.
By the control of filtrate cleaning solution consumption, can effectively control the clean result of filtrate, therefore can adapt to the filtration requirement of different quality, keep uniform water-flowing amount and effluent quality, promptly the suitable property of filter of the present invention is stronger.
Further specify the structure of filter of the present invention and the method for operation below in conjunction with accompanying drawing.
As shown in Figure 1, realize that a kind of filter of the present invention is mainly by filtering tank 2, water-locator 26, filter bed 3, rectification body 7, air sparger 10,27, outside filtrate carrier pipe 9,11,12, suspension separator 13, washer 18, filtrate distributor 20, and corresponding Inlet and outlet water pipeline and valve composition.
Former water enters filtering tank 2 from water inlet 1, after water-locator 26 distributes, upwards flow equably, and by filter bed layer 3, pollutants such as the suspension in the water is trapped within the filtrate.Clean water after the filtration enters the clean water storage area 4 on filtering tank top, enters exhalant region 5 after overflow, is discharged by delivery port 6 at last.
When former water was filtered, the filtrate that pollutant has been held back in filtering tank 2 bottoms constantly moved down, and by the filtrate carrier pipe (9,11,12) of rectification body 7, filtrate outlet 8, outside, was promoted to the suspension separator 13 at filtering tank top.Filtrate is in separator, and after distribution grid 14 distributed, in the time of lower slider, water in the filtrate and pollutant saw through eyelet along the porous sieve plate that tilts, enter water leg after, discharge by blow-off pipe 16.Carry all compressed air of filtrate to introduce by air sparger 10 and 27.
From the filtrate that separator 13 comes out, only contain very a spot of water and suspension, fall to equably in the washer 18 through pipeline 17.When filtrate enters washer, from the clear water of filtering tank clean water storage area, under the effect of liquid level difference, also enter in the washer 18, filtrate is cleaned.The size of the washing water yield is by valve 22 or 24 controls.Clean the filtrate after the cleaning, from the washer bottom filtrate outlet 19 evenly flow out, can be back to the top of filter bed 3 by after 20 redistributions of filtrate distributor, forms new filter bed, also can rely on the mode of nature accumulation, form new filter bed.
The cleaning water outlet can be back in the filtering tank by the water inlet pipe 1 of pipe 23 and filtering tank after being discharged by the outlet pipe on the washer 21; Also can be by pipe 25, certain position enters the filtering tank between the outlet 8 from water inlet pipe 1 to filtrate, preferably the position that exports near filtrate.Clean water outlet and can provide power by modes such as pump or ejectors.
Below by embodiment treatment effect of the present invention is described.
Embodiment 1
Water outlet after certain oil plant biochemical treatment, concentration of suspension is 90mg/l in the water, turbidity is 60 degree.After adopting filter plant of the present invention to handle, concentration of suspension is reduced to 4mg/l in the filtration water outlet, and turbidity is 3 degree, and the concentrated sewage quantity that effluxes is 1.5% of an inflow, and concentration of suspension is 5680mg/l.And adopt filtrate washer row to concentrate dirty method, and when keeping filtering out aqueous suspension concentration and being 4mg/l, the externally discharged waste water amount will reach 4% of inflow, and the draining concentration of suspension is 2120mg/l.If reduce outer discharge capacity to 1.5%, the suspension degree that then filters water outlet can be increased to 15mg/l.
Embodiment 2
Certain catalyst plant sewage, concentration of suspension is 130mg/l in the water, and turbidity is 110 degree, and pollutant is mainly raw materials for production such as trickle molecular sieve of particle diameter and silicate.Adopt filter plant of the present invention, concentration of suspension is 4.5mg/l in the water of processing back, and turbidity is 2.8 degree, and outer displacement accounts for handles 2.5% of the water yield, and concentration of suspension is 5030mg/l, for the recovery of raw materials for production is laid a good foundation.And adopt filtrate washer row to concentrate dirty method, and when keeping filtering out aqueous suspension concentration and being 4.5mg/l, the externally discharged waste water amount will reach 6% of inflow, and the draining concentration of suspension is 2100mg/l.If reduce outer discharge capacity to 2.5%, the suspension degree that then filters water outlet can be increased to 28mg/l.
Claims (12)
1, a kind of device of removing suspension in the water, comprise tank body, overflow cofferdam and drainpipe, water inlet pipe and water-locator, filtrate washer, rectification body, filtrate distributor and filtrate circularly enhancing pipe, it is characterized in that between filtrate circularly enhancing pipe and filtrate washer, the suspension separator being set, the structure of suspension separator comprises the inclination porous sieve plate or the screen cloth of plane or curved surface, water leg below sieve plate or the screen cloth and the sewage drainage pipe that communicates with it; The suspension separator is arranged at the position that is higher than the filtrate washer, and the upper end outlet of filtrate circularly enhancing pipe places the high-end of inclination porous sieve plate or screen cloth, and the low side of inclination porous sieve plate or screen cloth and filtrate washer link; In filtrate circularly enhancing pipe bottom the primary air distributor that the lifting filtrate is used is set.
2, according to the described device of claim 1, it is characterized in that the inclination porous sieve plate of described suspension separator or screen cloth and horizontal angle are 15 °～75 °, the bore dia of sieve plate is 0.001～0.8 times of filtering material particle diameter D.
3, according to the described device of claim 2, it is characterized in that the inclination porous sieve plate of described suspension separator or screen cloth and horizontal angle are 30 °～60 °, the bore dia of sieve plate is 0.05～0.6 times of filtering material particle diameter D.
4, according to the described device of claim 1, it is characterized in that described tank body is a tube structure, the filtrate outlet is arranged at the bottom; Water inlet pipe is arranged at the tank body middle and lower part, and the part of water inlet pipe in tank body is provided with water-locator; The overflow cofferdam is the sleeve circulus of upper opening, is arranged on top, tank body outside, and the cofferdam height need surpass the tank body upper edge; Drainpipe communicates with the overflow cofferdam.
5, device according to claim 1 is characterized in that the filtrate washer is arranged in the middle of the tank body internal upper part; The position return mechanism that filtrate washing water outlet mixes with former water or exports near filtrate at pot bottom.
6, device according to claim 1 is characterized in that the sewage that suspension separator drainpipe is discharged, and discharges system as the sewer of this device.
7,, it is characterized in that described tank base adopts the inclined-plane or the conical surface to form the filtrate outlet according to the described device of claim 4.
8,, it is characterized in that described filtrate washer top is provided with circulation filtrate inlet and washings outlet according to the described device of claim 4; The washings outlet communicates with the washings drainpipe, and the valve of control washings consumption is set on the washings drainpipe; The washer bottom center is provided with the filtrate outlet, and lower side is provided with the cleaning solution inlet.
9, according to the described device of claim 8, it is characterized in that being provided with in the described filtrate washer some baffling swash plates, filtrate forms waterfall stream between two adjacent baffling swash plates.
10, according to the described device of claim 1, it is outside or inner to it is characterized in that described filtrate circularly enhancing pipe is arranged on tank body.
11, according to the described device of claim 1, it is characterized in that communicating with the outlet of tank body filtrate below the described filtrate circularly enhancing pipe, the top outlet is positioned at the high-end of suspension separator inclination porous sieve plate or screen cloth.
12,, it is characterized in that being provided with on the described riser 1～10 air sparger according to the described device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031340075A CN1325138C (en) | 2003-09-15 | 2003-09-15 | Device for removing suspended matter in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031340075A CN1325138C (en) | 2003-09-15 | 2003-09-15 | Device for removing suspended matter in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1597041A CN1597041A (en) | 2005-03-23 |
| CN1325138C true CN1325138C (en) | 2007-07-11 |
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ID=34658952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031340075A Expired - Lifetime CN1325138C (en) | 2003-09-15 | 2003-09-15 | Device for removing suspended matter in water |
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| Country | Link |
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| CN (1) | CN1325138C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499191B (en) * | 2011-11-28 | 2014-02-05 | 广东恒兴饲料实业股份有限公司 | Artemia separation device |
| CN102512858A (en) * | 2011-12-29 | 2012-06-27 | 浙江德安科技股份有限公司 | Vertical filter |
| CN104170787B (en) * | 2014-09-11 | 2016-04-27 | 蒋有南 | Water body recovery technology filter bed |
| CN104862428B (en) * | 2015-05-12 | 2018-01-16 | 华南理工大学 | The sugar-free grains enrichment and separation device and method of a kind of enzyme process starch sugar |
| CN106754453B (en) * | 2015-11-19 | 2020-08-07 | 中国石油化工股份有限公司 | Enrichment culture method of function-enhanced denitrification microorganisms |
| CN106018049B (en) * | 2016-07-14 | 2019-01-22 | 宣尧杭 | The separator for mud and water that suspended matter can sieve |
| CN111389385B (en) * | 2020-04-08 | 2023-04-28 | 杭州回水科技股份有限公司 | Spiral separation and cleaning device and method for activity Jiao Lvliao |
| CN115228157B (en) * | 2021-04-22 | 2023-09-29 | 北京奥博水处理有限责任公司 | Double-bed suspension medium filtering device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042374U (en) * | 1989-01-27 | 1989-08-09 | 王振声 | Filter for granular with auto-moving bed |
| US5462654A (en) * | 1993-09-29 | 1995-10-31 | Hering, Jr.; C. J. | Dynamic moving bed filter apparatus |
| JPH1071305A (en) * | 1996-06-27 | 1998-03-17 | Ishigaki:Kk | Moving filter bed type filter |
-
2003
- 2003-09-15 CN CNB031340075A patent/CN1325138C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042374U (en) * | 1989-01-27 | 1989-08-09 | 王振声 | Filter for granular with auto-moving bed |
| US5462654A (en) * | 1993-09-29 | 1995-10-31 | Hering, Jr.; C. J. | Dynamic moving bed filter apparatus |
| JPH1071305A (en) * | 1996-06-27 | 1998-03-17 | Ishigaki:Kk | Moving filter bed type filter |
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| CN1597041A (en) | 2005-03-23 |
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Granted publication date: 20070711 |