CN203886254U - Biological quicksand filter for desalted water pretreatment system - Google Patents
Biological quicksand filter for desalted water pretreatment system Download PDFInfo
- Publication number
- CN203886254U CN203886254U CN201420270442.3U CN201420270442U CN203886254U CN 203886254 U CN203886254 U CN 203886254U CN 201420270442 U CN201420270442 U CN 201420270442U CN 203886254 U CN203886254 U CN 203886254U
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- China
- Prior art keywords
- water
- sand
- biological
- filter
- filter housing
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- Expired - Fee Related
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- Filtration Of Liquid (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model relates to a biological quicksand filter for a desalted water pretreatment system. The biological quicksand filter is characterized in that a center pipe is arranged in the middle in a filter shell; a water inlet is formed in the top of a top center pipe of the filter shell; a conical sand settling device is arranged at the periphery of the center pipe in the filter shell; a water distributor is arranged on the upper part of the sand settling device; a biological sand bed is arranged on the upper part of the water distributor; an air lifting pump is arranged at the inner bottom of the filter shell; a water discharging baffle A is arranged on one side outside the filter shell; a water outlet is formed in the other side outside the filter shell; a water discharging baffle B is arranged on the inner side of the water outlet. The biological quicksand filter has the advantages that 1, continuous running can be realized, and special backwashing equipment is not needed; 2, a unique cleaning device can achieve a complete filtering material cleaning effect only by a small amount of cleaning water; 3, the operation is flexible and convenient, and the air conveying quantity and the pressure can be freely adjusted; 4, due to the special conical sand distributor, sand in a filtering bed can uniformly descended, and the phenomenon that a filtering layer is blocked is avoided.
Description
Technical field
The utility model relates to metallurgy, chemical industry, construction machinery industry, and the biological shifting sand filter of a kind of demineralized water pretreatment system, is applied to filtration, purification, demineralized water water pretreatment specifically.
Background technology
At present in the poor region of water quality, common demineralized water pretreatment needs multistep treatment, pretreating process goes out water unstable, have a strong impact on the service life of reverse osmosis membrane, be subject to the many COD of influent quality influence factor to become insoluble problem in General Physics processing, a whole set of biodegradation treatment process is huger, and in the higher region of influent COD, General Physics method cannot meet again as pretreatment.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provide a kind of demineralized water pretreatment system biological shifting sand filter, the utility model solves the technical scheme that its technical problem adopts: structure of the present utility model comprises water outlet baffle plate A, water outlet baffle plate B, delivery port, filter housing, biological casting bed, water-locator, sand-settling device, air lift, central tube, water inlet, in the middle of it is characterized in that in filter housing, be provided with central tube, central tube arranges from bottom to top, top at the top center pipe of filter housing is provided with water inlet, periphery at filter housing inner central tube is provided with sand-settling device, sand-settling device is arranged to taper, the top of sand-settling device is provided with water-locator, water-locator top is biological casting bed, at filter housing inner bottom part, be provided with air lift, outside filter housing, a side is provided with water outlet baffle plate A, outside filter housing, opposite side is provided with delivery port, delivery port inboard is provided with water outlet baffle plate B.
Operation principle: sewage enters filter by water inlet pipe, by vertical inlet pipe and water-locator, enter filter bed, in the process of upper reaches, water body is purified by sand filter blanket, and get rid of through top downflow weir, when current rise simultaneously, filtering layer of sand moves downward continuously, dirty sand is in bottom process air lift, from central tube, be promoted to top, considering in the meantime sand is cleaned rear regeneration and is released to top layer of sand, the circulation of sand relies on the effect of air lift, order about dirty sand and water along Ti Sha upper reaches, center, powerful flushing is separated impurity from sand grains, at pipeline air, be released, addle also emits, and sand fallout is in washer, the worry sand amount shifting by gas stripping depends on the number of gas stripping air capacity.Air-flow is transported to sand-washing device by dirty sand from sand filter bottom.Air-flow forms by passing into air a long duct bottom.Low-density sand/water/air and surrounding medium have caused changing the rising of mixture jointly, and this has physics pump principle to form.Air-flow is in a vertical protection tube (central tube).Air-flow is immersed in water completely, and the suction side of air-flow is filter bottom and then, and get rid of end, terminates in sand-washing device (filter upper end).Compressed air is by entering airflow chamber and distributor chamber for pipeline.Water in airflow chamber replaces compressed air, thereby produced averag density, is less than the air of ambient water and the mixture of water.Water in the static pressure of ambient water so forced draft chamber upwards flows, and the suction that airflow chamber suction side produces is enough to the sand of airflow chamber and air-water mixture to rise in the sand-washing device on top.When sand leaves airflow chamber's discharge, just by sand-washing device, land, less, the suspension polity that proportion is lighter will be washed by reciprocal rinse water, clean sand falls back to casting bed, re-start filter process, dirty rinse water stream removes by rinse water row of conduits, air expands to be calculated in atmosphere, sand-washing device is the critical component that sand is considered pond, the sand-washing device with unique hydraulic characteristic(s) is surrounded on center and carries sand pump upper reaches, sand grains enters sand-washing device, after having the clean worry of the washer port of flowing through on a small quantity, water carries out last cleaning, consider sand rinse water and be discharged out reflecting device under the liquid level difference effect of filtrate and rinse water, sand-washing device is comprised of many rings of carrying sand pump around center, thereby form the shape in " labyrinth ", the internal and external parts of sand-washing device concentrates on supporting bracket, these supporting brackets are being supported whole sand-washing device, when the grains of sand move downward by sand-washing device, the grains of sand are reversed the water cleaning that enters sand-washing device, filtrate and the liquid level difference in wash water container in rinse water circulation filtering ponds form, liquid level difference forces sub-fraction filtrate to move upward in sand-washing device, the liquid level difference of filtrate and rinse water can be by regulating the height of rinse water delivery port to realize, liquid level difference is larger, clean current just larger, except the liquid level difference of rinse water and filtrate, cleaning current are also subject to the impact of sand cycle rate, sand cycle rate is higher, worry sand amount in rinse bath is more, retardation to water is larger, clean current just less, in actual motion, need the cleaning current that keep less, can realize by regulator solution potential difference and sand cycle rate.
The beneficial effects of the utility model are to the utlity model has following advantage: 1, continuously-running, without special backwashing equipment; 2, unique decontaminating apparatus only needs a small amount of rinse water just can reach filtrate completely and cleans effect; 3, flexible and convenient operation, can free adjustment air conveying capacity and pressure; 4, special taper sand distributor evenly declines the sand in filter bed, there will not be filtering layer clogging, makes filtrate remain clean state, has improved filter efficiency; 5, operating cost is low, and power consumption only has raw water pump and air compressor machine or air lift; 6, effectively utilize simple technique can remove phosphorus, COD and the ammonia nitrogen etc. in water.
Accompanying drawing explanation
Fig. 1: the utility model example structure schematic diagram.
In figure: water outlet baffle plate A1, water outlet baffle plate B2, delivery port 3, filter housing 4, biological casting bed 5, water-locator 6, sand-settling device 7, air lift 8, central tube 9, water inlet 10.
The specific embodiment
With reference to the accompanying drawings of the utility model being done to following concrete detailed description.As shown in drawings, structure of the present utility model comprises water outlet baffle plate A1, water outlet baffle plate B2, delivery port 3, filter housing 4, biological casting bed 5, water-locator 6, sand-settling device 7, air lift 8, central tube 9, water inlet 10, it is characterized in that the interior centre of filter housing 4 is provided with central tube 9, central tube 9 arranges from bottom to top, top at the top center pipe 9 of filter housing 4 is provided with water inlet 10, periphery at filter housing 4 inner central tubes 9 is provided with sand-settling device 7, sand-settling device 7 is arranged to taper, the top of sand-settling device 7 is provided with water-locator 6, water-locator 6 tops are biological casting bed 5, at filter housing 4 inner bottom parts, be provided with air lift 8, outside filter housing 4, a side is provided with water outlet baffle plate A1, at the outer opposite side of filter housing 4, be provided with delivery port 3, delivery port 3 inboards are provided with water outlet baffle plate B2.
Embodiment recited above is described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the prerequisite of the utility model design concept; various modification and improvement that in this area, common engineers and technicians make the technical solution of the utility model; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection, is all documented in claims.
Claims (1)
1. the biological shifting sand filter of demineralized water pretreatment system, comprise water outlet baffle plate A (1), water outlet baffle plate B (2), delivery port (3), filter housing (4), biological casting bed (5), water-locator (6), sand-settling device (7), air lift (8), central tube (9), water inlet (10), in the middle of it is characterized in that in filter housing (4), be provided with central tube (9), central tube (9) arranges from bottom to top, top at the top center pipe (9) of filter housing (4) is provided with water inlet (10), periphery at filter housing (4) inner central tube (9) is provided with sand-settling device (7), sand-settling device (7) is arranged to taper, the top of sand-settling device (7) is provided with water-locator (6), water-locator (6) top is biological casting bed (5), at filter housing (4) inner bottom part, be provided with air lift (8), outside filter housing (4), a side is provided with water outlet baffle plate A (1), outside filter housing (4), opposite side is provided with delivery port (3), delivery port (3) inboard is provided with water outlet baffle plate B (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270442.3U CN203886254U (en) | 2014-05-20 | 2014-05-20 | Biological quicksand filter for desalted water pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270442.3U CN203886254U (en) | 2014-05-20 | 2014-05-20 | Biological quicksand filter for desalted water pretreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203886254U true CN203886254U (en) | 2014-10-22 |
Family
ID=51712706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270442.3U Expired - Fee Related CN203886254U (en) | 2014-05-20 | 2014-05-20 | Biological quicksand filter for desalted water pretreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203886254U (en) |
-
2014
- 2014-05-20 CN CN201420270442.3U patent/CN203886254U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20160520 |