CN1022383C - Pool for purifying water - Google Patents

Abstract

The present invention relates to an erecting type copolymerization gas floating tank which only is provided with an inlet. The external part of a coagulation capturing region in an inner barrel is provided with a ring filtering bed which can be filled with various active fillers and is provided with a recoiling oxygenation device. After treated water is separated by coagulation, purified water overflows from the coagulation capturing region and is exhausted by the filtering bed. Suspended solid overflows automatically from the upper part of the clarification separation region and is exhausted by a ring crescent drift slot. The device has the advantages of small occupation area, equipment investment saving and low power consumption, having a wide application to water conditioning engineering, because physical designs of automatic overflow and exhaust of solid, purified water, etc. are used.

Description

Pool for purifying water

The present invention is relevant with air supporting method water treatment facilities.

In the water technology that the molten gas air supporting method of pressure is purified waste water, generally adopt a kind of vertical flotation tank, the microbubble that dissolved air water discharges by release adheres to suspended particulate come-up in the water, makes Separation of Solid and Liquid through a coagulation capture area and clarification Disengagement zone.The suspended particulate that is separated because the holder that acts on microbubble of the upthrust of fluid is attached down, accumulates in the top of purifying waste water.In order to get rid of the mud of these suspensions, suitable for reading in the dirty pond of gas is equipped with a bakie that the mind-set edge tilts from the pond usually, and a scraper plate is housed comes back rotation, the mud of suspension scraped into bakie discharged.This device needs one and exchanges the rotation of adjustment driven by motor scraper plate, has both increased equipment investment, and filth-discharging effect is also bad, and isolated mud can not in time be removed, and has also increased the power consumption of equipment in addition; Through purify purifying waste water of separating from the coagulation district, then overflow is discharged from the coagulation capture area, is transported in the suction strainer jar with pump again and discharges after further adsorption filtration, and this plant area area is big, the energy consumption height.

The objective of the invention is to design and a kind ofly can drain mud automatically, floor space is little, the pool that energy consumption is lower.

Solution of the present invention is to have one to become axisymmetric outer cylinder with it in inner cylinder coagulation capture area outside, and outer cylinder is higher than inner cylinder.An annular filter bed is arranged between outer cylinder and inner cylinder, and the position of filter bed is lower than inner cylinder.Exceed the outer cylinder part of inner cylinder, clarification Disengagement zone for pool, the position of said clarification Disengagement zone is in the top of inner cylinder coagulation capture area and annular filter bed, exit above outer cylinder clarification Disengagement zone, there is one to become whole ring-type crescent drift slot with it, the said ring-type crescent drift slot position suitable for reading with respect to said outer cylinder makes when suspension during from outer cylinder overflow suitable for reading, and suspension can not be stagnated in ring-type crescent drift slot.Processed like this water by behind the release in inner cylinder coagulation district, in the effect low suspension particle and the fluid separation applications of microbubble, suspended substance is purified waste water down last, purifies waste water and discharges by filter bed from the inner cylinder overflow.

An important feature of the present invention is that the suitable for reading of outer cylinder becomes inscribed circle to be connected with the outer of ring-type crescent drift slot, the point of contact is the peak of ring-type crescent drift slot, it is suitable for reading that the outer of ring-type crescent drift slot is higher than outer cylinder, overflows with the suspended sludge that prevents to flocculate.In drift slot bottom a slag-drip opening is arranged from 180 degree arc places, interior point of contact.The gradient of ring-type crescent drift slot is 8 to 10 degree.The interior suspended sludge of flotation tank is attached down in the holder of microbubble like this, and the rising surplus energy by rising liquid stream and air advances drift slot from the continuously overflow suitable for reading of outer cylinder, waltzs through drift slot and is discharged by slag-drip opening.At 180 degree arc places from slag-drip opening are dead angles of discharging suspended sludge, this device makes drift slot outer and outer cylinder become inscribed circle to be connected, make drift slot crescent in the form of a ring, interior point of contact is on the peak of ring-type crescent drift slot, has so just avoided suspended sludge to be detained here.

Another characteristics of the present invention are that various active fillers are housed in filter bed, from the inner cylinder overflow and purifying waste water of going out, here through further handling the delivery port discharging from the filter bed bottom.Adopt after this design, utilize liquid level difference gravity flow and carry out purified treatment down, both omitted the liquid transmitting power one time, saved the energy, also reduced equipment, reduction device fabrication cost.In addition original two complete equipments are integrated, have reduced floor space widely.

It is to be provided with the recoil oxygen-increasing device in the bottom of the bed of annular filter that the present invention also has characteristics, and said recoil oxygen-increasing device is many gas distribution pipes that evenly distributed in filter bed bottom, and the quantity of gas distribution pipe is 12 to 16 and does not wait, decides according to instrument size.Said gas distribution pipe caliber is 12.5 to 25 millimeters.Some micropores are arranged on gas distribution pipe, and the aperture of micropore is 2.5～5 millimeters.The distributing position of micropore on gas distribution pipe is to make progress into positive 45 degree to be interspersed, and the spacing of adjacent micropore is 20 to 60 millimeters.After the filtrate in the filter bed uses a period of time, can carry out backwash with this recoil oxygen-increasing device, improve the activity of filler with the oxygen content that increases water.

Another characteristics of the present invention are that the bottom centre position at inner cylinder coagulation capture area only is provided with a water inlet, and the caliber of water inlet pipe is 12.5 to 273 millimeters, and are selected according to the water treatment facilities ability of design.An adjustable dissolved air release of exempting to fill in is installed on water inlet, slit in the release is conical structure, slit height and eyelet size all can be regulated automatically, when having dirt to stop up in the slit, this release can be regulated the slit height automatically according to the variation of hydraulic pressure in the system, finishes the effect that automatic eliminating slit is stopped up.So this device only needs a water inlet to be directly used in the purified treatment of trade effluent.Said coagulation capture area is 1: 2 with the volume ratio of clarification Disengagement zone.Processed water quality enters the coagulation capture area from water inlet by dissolved air release and arrives the clarification Disengagement zone, suspended solid is fully separated with purifying waste water, purify waste water from inner cylinder overflow suitable for reading, by discharging behind the filter bed, suspended solid is then attached down in the holder of microbubble, rising surplus energy by rising liquid stream and air automatically discharges after drift slot is advanced in outer cylinder overflow suitable for reading.

For the structure of pool provided by the invention is described better, be further described by accompanying drawing below.

Fig. 1 represents the cutaway view of this device;

Fig. 2 represents the vertical view of this device;

Fig. 3 represents the whole sectional structure chart of this device;

The amplification plan view of A in Fig. 4 presentation graphs 3;

The enlarged side view of A in Fig. 5 presentation graphs 3.

The pool that the present invention proposes, the center is an inner cylinder (4), is coagulation capture area (3), has a water inlet (1) to link to each other with dissolved air release (2) at inner cylinder bottom centre place, the water quality of processing is from entering flotation tank here.There is one to become axisymmetric outer cylinder (7) with it in the outside of inner cylinder, between outer cylinder and inner cylinder, being lower than inner cylinder position suitable for reading is an annular filter bed (5), many equally distributed gas distribution pipes (12) is arranged as the recoil oxygen-increasing device in the bottom of annular filter bed.Many micropores (13) that positive 45 degree that make progress are interspersed that are are arranged on gas distribution pipe.Also have delivery port (11) in the bottom of filter bed, the water that purifies through flotation tank is from discharging here.Top at inner cylinder coagulation capture area and annular filter bed, be clarification Disengagement zone (6), the exit has one to become whole ring-type crescent drift slot (9) with it above outer cylinder clarification Disengagement zone, the outer (8) of the suitable for reading and ring-type crescent drift slot of outer cylinder becomes inscribed circle to be connected, spending the arc places from interior point of contact 180, a slag-drip opening (10) is arranged at the bottom of drift slot.So far just constitute a complete pool as shown in Figure 3.

Advantage of the present invention is clearly, and compared with prior art the suspended sludge discharging does not need scraper to promote, and the automatic overflow discharging has reduced equipment investment, and saved power consumption; Filter bed and flotation tank are integrated, and the also automatic overflow discharging of purifying waste water reduces some ground area and equipment, and compared with prior art, floor space only has 2/3rds of same device. So it is little that this device has floor space, low equipment investment, low power consumption and other advantages can be applied in the water treatment engineering.

Claims (8)

1, a kind of pool, comprise a coagulation capture area, a clarification Disengagement zone, a dissolved air release, an Overflow drainage mouth, a slag-drip opening, it is characterized in that having one to become axisymmetric outer cylinder (7) with it in inner cylinder coagulation capture area (3) outside, outer cylinder is higher than inner cylinder (4), an annular filter bed (5) is arranged between outer cylinder and inner cylinder, the position of filter bed is lower than inner cylinder, the outer cylinder portion that exceeds inner cylinder is divided into the clarification separation (6) of pool, the position of said clarification Disengagement zone is in the top of inner cylinder coagulation capture area and annular filter bed, the exit has one to become whole ring-type crescent drift slot (9) with it above outer cylinder clarification Disengagement zone, the gradient of ring-type crescent drift slot is 8 to 10 degree, the said ring-type crescent drift slot position suitable for reading with respect to said outer cylinder, be that the suitable for reading of outer cylinder becomes inscribed circle to be connected with the outer (8) of ring-type crescent drift slot, the point of contact is the peak of ring-type crescent drift slot, it is suitable for reading that the outer of ring-type crescent drift slot is higher than outer cylinder, in the drift slot bottom from 180 degree arc places, interior point of contact a slag-drip opening (10) arranged.When suspension during from outer cylinder overflow suitable for reading, suspension liquid can not be stagnated in ring-type crescent drift slot like this.

2, according to the described pool of claim 1, it is characterized in that in filter bed, being equipped with various active fillers, a delivery port (11) is arranged in the bottom of filter bed.

3, according to the described pool of claim 2, it is characterized in that being provided with the recoil oxygen-increasing device in the bottom of filter bed, said recoil oxygen-increasing device is that some are at filter bed bottom equally distributed gas distribution pipe (12).

4, according to the described pool of claim 3, it is characterized in that the quantity of the gas distribution pipe bottom filter bed is 12～16, caliber is 12.5～25 millimeters.

5, according to the described pool of claim 4, it is characterized in that some micropores (13) are arranged on the gas distribution pipe of filter bed, the aperture of micropore is 2.5～5 millimeters.

6, according to claim 4 or 5 described pools, it is characterized in that the distributing position of micropore on gas distribution pipe is interspersed for positive 45 degree that make progress, the spacing of adjacent micropore is 20～60 millimeters.

7,, it is characterized in that the said coagulation capture area and the volume ratio of clarification Disengagement zone are 1: 2 according to the described pool of claim 1.

8, according to the described pool of claim 1, it is characterized in that having only a water inlet (1) at the bottom centre place of coagulation capture area, the water inlet size is 12.5～273 millimeters.

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