CN2168862Y

CN2168862Y - Active carbon and sponge filter

Info

Publication number: CN2168862Y
Application number: CN93225962U
Authority: CN
Inventors: 蒋银旗; 潘建伟; 吴迪胜
Original assignee: Shanghai Normal University
Current assignee: Shanghai Normal University; University of Shanghai for Science and Technology
Priority date: 1993-07-01
Filing date: 1993-07-01
Publication date: 1994-06-15
Anticipated expiration: 2003-07-01

Abstract

The utility model discloses water treatment equipment, particularly an active carbon sponge fluidisation filter device which relates to the technique of organic waste water treated by microorganisms and suspended solid matter separated in water, and belongs to the field of waste water treatment. The active carbon sponge fluidisation filter device is an integrative device of gathering the functions of organism fluidisation, biochemistry and filtration. Organism carbon fluidization and filtering are carried on continuously besides a filtration bed needs to be washed periodically. The utility model has the characteristics that the BOD and COD removal rate is high, the volume load is high, the active carbon can not run off, the treated water does not contains suspended matter, etc. The utility model can be used for the treatment of the organic waste water with high COD, the organic waste water with low COD and the organic waste water containing high ammonia and nitrogen. When the utility model is used for the treatment of the organic waste water with low COD and organic waste water containing higher ammonia and nitrogen, the water after treated is clean, and the water can be used as the medium water to be recycled.

Description

Active carbon and sponge filter

The utility model is a kind of water treating equipment, relates to the technology of separate solid suspended substance in microbiological treatment organic waste water and the water, belongs to field of waste water treatment.

In field of waste water treatment, the method and apparatus of disposing of sewage is a lot.Wherein, use that the method for three-phase biologic fluidized-bed processing waste water has that energy consumption is low, processing efficiency is high, advantage such as reduced investment, operating cost are low.On February 16 nineteen ninety, Shanghai Normal University's environmental science and Graduate School of Engineering have been invented a kind of " disposing waste water by biological fluidized bed with sponge carrier method and device thereof " (ZL90100795.1).In this patent of invention specification sheets, disclose a kind of biological fluidized bed with sponge carrier, the effect of its existing charcoal has the gas, liquid, solid contact good again, and gac is difficult for characteristics such as loss.The another kind of device such as the filter bed of wastewater treatment, it can separate the suspended solid in the waste water by the filteration of various filtrates, is also adopted widely in environment-friendly engineering usually.Along with municipal wastewater is handled factory in the raising of specification of quality and the city, enterprise's land used this outstanding to contradiction in short supply, the miniaturization of people's an urgent demand wastewater treatment equipment and the variation of apparatus function are to reach efficient, practical and joint produces effect.

The utility model aims to provide a kind of gac sponge fluidisation filtration unit, and the function of this device collection biological fluidized bed and filter bed is an one, realizes the low purpose of variation, miniaturization, high-level efficiency, reduced investment and running expense of wastewater treatment equipment function.

A kind of gac sponge fluidisation filtration unit of the present utility model is a kind of follow-up improvement to the ZL90100795.1 patent.It increases the function of filter bed again on three-phase biologic fluidized-bed basis, both two kinds of functions of biological fluidized bed and filter bed were combined among the device dexterously.It is fluidizing medium that the biological fluidized bed of device adopts gac sponge fritter, and powdered carbon is adsorbed on the internal surface of sponge fritter.The gac sponge accounts for whole fluidized-bed volumetrical 20～30%.Therefore, the effect of the existing charcoal of this fluidized-bed has the gas, liquid, solid contact good again, and gac is difficult for advantages such as loss.Filter bed is positioned at the bottom of fluidized-bed, and according to the needs that filter and wash, diameter is smaller.Fluidized-bed is made up of urceolus and internal recycle tube, and a sieve plate is arranged at the bottom of filter bed, the bed course that the top of sieve plate has cobble to be paved into, and the upper strata of bed course is a filtering layer.The filtrate of filtering layer is quartz sand or plastic pellet.Biological fluidized bed and filter bed are combined, not only simplify the structure, but also improved the quantity of thalline in the waste water, both improved the biological treatment ability, can use water again and be substantially free of suspended substance.In addition, can reduce investment outlay and running expense.

For further specifying the technical solution of the utility model, Figure of description provides the synoptic diagram of a width of cloth gac sponge fluidisation filtration unit.Description of drawings is as follows:

Roots blower 1 flushing intake valve 2 aeration valves 3 sieve plates 4

Filter bed 5 aeration heads 6 internal recycle tubes 7 urceolus 8

Liquid level alarm 9 overflows water pipe 10 and flushes out water valve 11,12

Reverse flow valve 13 exhaust-valves 14. outlet valves 15 water inlet pipes 16

Gac sponge fluidisation filtration unit of the present utility model is when operation, and water inlet is a successive.Waste water is through biological fluidized bed and filter bed, overflows water pipe 10 and outlet valve 15 flows out by inverted U.The biological fluidized bed required air be roots blower 1 through aeration valve 3, aerations in the inside circulating barrel 7 of seedpod of the lotus shape aeration head 6 upwards promote water and gac sponges in the internal recycle tube 7, descend and form circulation through annular space again.Gac in the sponge then plays charcoal, makes the organic matter degradation in the waste water.Hold back solid substance when more and more when filter bed, bed resistance is increasing, and the liquid level of biological fluidized bed begins to rise, and liquid level alarm 9 is reported to the police.At this moment, answer switch valve to wash.During flushing, close outlet valve 15, open and flush out water valve 11, reverse flow valve 13, make an interior liquid level and flush out water valve 11 contour.Open flushing intake valve 2 again, close aeration valve 3 after, open and flush out water valve 12, the rising gas speed of at this moment filtering bed is bigger, be enough to make bed loosening, expand, voidage strengthens, the solid substance that bed is held back will be discharged through flushing out water valve 12 with water.The time of flushing decides according to the quantity of holding back solid substance, can control by the open degree of flushing water intaking valve 12.When the water surface in the fluidized-bed and flushing water intaking valve 12 were contour, flushing finished.And then recovery filtration state.

Active carbon fluid filtration unit of the present utility model is applicable to and handles high-COD waste water, low COD waste water and high ammonia-nitrogen waste water.Be used for high-COD waste water (during COD1000～4000mg/L), can be at high volumetric loading (4～15kgCOD/m ³D) turn round under the situation.During flushing, the water of discharge contains the extremely strong bacterium mud of adsorptive power, can be used from the pre-treatment of waste water with flocculation agent one.This pre-treatment can make the COD of waste water reduce by 30～60% generally speaking.When being used for low COD waste water (below the 200mg/L), during or high ammonia-nitrogen waste water, water outlet is transparent, can be used as the middle use water reuse.

Claims

1, a kind of gac sponge fluidisation filtration unit, it is characterized in that the filter bed that is positioned at the fluidized-bed on device top and is positioned at the device bottom constitutes one, the gac sponge places in the fluidized-bed, the bottom center of internal recycle tube 7 has an aeration head 6 that is seedpod of the lotus shape, the sieve plate 4 of a garden shape is arranged at the bottom of filter bed 5, filtrate places the top of sieve plate 4, water-in, water outlet lay respectively at the top and the bottom of device, are located at the regulation system of liquid level alarm 9 constituent apparatus on device urceolus top by 3,11,12,13 and one of several control valves.

2, according to the described gac sponge of claim 1 fluidisation filtration unit, it is characterized in that the internal surface of gac sponge is adsorbing powdered carbon, the amount of being equipped with of gac sponge is a fluidized-bed volumetrical 20～30%.

3,, it is characterized in that the filtrate on the sieve plate 4 of filter bed 5 is quartz sand or plastic pellet according to the described gac sponge of claim 1 fluidisation filtration unit.