CN1010771B - Treatment apparatus for sewage - Google Patents

Abstract

The present invention discloses a sewage treatment device. The device sheathes two tubular structures together whose sectional planes are circular or rectangular, forming an inner chamber and an outer chamber surrounding the inner chamber. Dissolved air releasers are installed in the inner and the outer chambers respectively. From the outer chamber to the inner chamber, sewerage pumped into the chambers is mixed with dissolved air and liquid ejected by the releasers for two times sequentially for air flotation cleaning action. Consequently, suspended substances, etc., in sewerage are formed to be floating slag, float up and is excluded. The sewerage after twice purification travels through the filter layer positioned at the bottom of the inner chamber and flow out in clear water. As a consequence, the present invention has the advantages of simple device, less investment, small occupation of land and high efficiency.

Description

Treatment apparatus for sewage

The present invention relates to a kind of waste disposal plant.

In the current domestic and international sewage treatment project, generally be to adopt the dissolved air flotation technology, after its method is the sewage dosing that will handle, pump in the air-floatation water purifier, make with the dissolved air water that is dissolved with air and mix mutually, utilization has the dissolved air water of certain pressure, the microbubble that is discharged when in sewage, spraying, separate the suspended substance in the sewage with through the cotton-shaped colloid that the dosing processing has generated, make it to float on the water surface, utilize machinery then or manually scum silica frost is discharged, but this method, work efficiency is low, reaction chamber volume can not make full use of, sometimes because of current disorder or heavy contamination or when striking off scum silica frost misoperation, break away from again after making suspended substance and floss and bubble contacting and sink, flow out with water outlet, cause the sewage purification degree not high.

In order to improve the sewage purification rate, often to build two air-floatation water purifiers, filtering basin, after sewage is handled through twice air supporting, filter again, do like this, just need two cover airfloat equipments, one cover filter plant, floor space is big, the equipment complexity, and the every processing of sewage once all must be with water pump lifting once, so energy consumption is big, cost height, operational administrative are also pretty troublesome.

The objective of the invention is to provide a kind of improved waste disposal plant, this plant area area is little, sewage purification degree height, and it is simple to save the energy and equipment.

The object of the present invention is achieved like this, with two cross sections is circle or orthogonal tubular structure, be nested together with one heart, formation is carried out the inner room of air supporting reaction and around the mistress of inner room, in interior mistress, be separately installed with dissolved air release, sewage pumps into outer indoor through tangent with mistress's locular wall or approaching parallel water inlet pipe, sewage the mistress through with after reliever water spray mixes, automatic overflow is in inner room, and through the sewage of twice air supporting effect, wherein suspended substance and floss form the scum silica frost come-up and be excluded, flow out through the filtering layer that is positioned at the inner room bottom again, thereby it is simple to reach equipment, takes up an area of few, the saving energy, the purpose that efficient is high.

Concrete structure of the present invention is provided by following examples and accompanying drawing thereof, and compares with prior art;

Fig. 1: existing waste disposal plant synoptic diagram

Fig. 2: apparatus of the present invention synoptic diagram

Below in conjunction with accompanying drawing, described in detail.

With reference to Fig. 1, existing waste disposal plant HBG pressurized dissolved air flotation water purifier is that sewage is pumped from sewage lagoon, the way in through medicine machine 1 dosing, sump pump 2, sewage inlet pipe 3, enter in the reaction chamber 4 of air-floatation water purifier, in reaction chamber 4 with dissolved air release 5 in the ejection dissolved air water mix mutually, with suspended substance in the sewage with through contact with microbubble formation scum silica frost 6 and floating of the floss that the dispensing effect produces, scum silica frost 6 enters in the sludge sump through ash pit 7 through artificial or mechanical deslagging.Clear water behind the deslagging, overflow is gone in the separate chamber 8 of air-floatation water purifier, the rising pipe 9 of 8 bottoms, self-separation chamber flows out, enter clean water basin, wherein the part clear water is mixed mutually with the air that is pressed into by air compressor 12 in the dissolved air water pump 10 pump-in pressure dissolvings 11, forms dissolved air water, send into again in the reliever 5 through dissolved air water pipe 13, circulation is disposed of sewage so repeatedly, and it has problems as described above.

With reference to Fig. 2, the embodiment of the invention is compared with existing technology, its auxiliary circulation system is constant substantially, it is that circular tubular structure is nested together with one heart that the air-floatation water purifier that mainly is original device partly changes by two cross sections, form the inner room 21 of air-floatation water purifier and around the mistress 22 of inner room, at the inside and outside indoor dissolved air release 23 that is separately installed with, inner room 21 highly is lower than mistress's height, establish sewage import 24 in the mistress bottom, this water inlet pipe and mistress's locular wall is tangent, thereby after making sewage enter the mistress with tangential direction, automatically along locular wall rotation and rising gradually, with aqueous vapor touch opportunity and the thorough mixing of increase with reliever 23 ejections, impel in the sewage suspended substance and floss to form scum silica frost and rise, indoor in then overflowing into when the sewage after the air-float purification effect reach a certain height, continuation is at the interior indoor air-float purification that carries out, the scum silica frost that twice air supporting reaction is produced, press slag scraper button 25, start slag scraper 26 it is sent into the slag-drip opening discharge, sewage behind twice air-float purification, the filtering layer of installing by a distance, distance inner room bottom surface 27 flows to the inner room bottom, through clear water output 28, flow in the clean water basin, wherein part is used for reliever.

When filtering layer needed to clean after 27 work for some time, then can close the sewage import, the dissolved air water pump is reversed as recoil pump, make the upwards ejection of bottom of dissolved air water inherent filtration layer 27, when the need water consumption is big, also can join recoil pump in addition or, with sewage discharge in the blow-off pipe 29 that is communicated with inner room of washing and filtering layer, lead to sewage lagoon then the flushing of filtrate lattice.

In the present embodiment, air-floatation water purifier mistress diameter 2200mm, inner room diameter 1400mm highly is respectively 2900mm and 2200mm, the dissolved air release mistress arranges 2 on TS-78-4 type, inner room is arranged 2 on TS-78-3 type, and the pressure air-dissolving tank internal pressure is 0.3-0.5Mpa, and the filtering layer bottom surface is from the about 200mm in inner room bottom surface, the about 600mm of filtering layer thickness, employing quartz sand is filtering material, the present invention and the most approaching prior art contrast, and relevant index such as following table:

The present invention has the following advantages:

1, purification efficiency height is saved the energy and land used: because of only in a two-layer container, just make sewage stand twice air-float purification and a filtration, needn't must repeatedly the processing water pump be risen as before, just can finish several roads cleaning procedure.

2, simple in structure, draw materials extensively, build easily: water purifier itself is a double-decker and a cover filter plant, its bottom can be the plane and is built directly on the ground of suitable reinforcing, must special basis, and the shape of water purifier itself, use material, all do not have specific (special) requirements and restriction, with regard to shape, can be circle, square, rectangle, used construction material, available steel plate, fiberglass, plastics, concrete, masonry structure; The filter materials aspect, quartz sand, plastics Archon, active carbon etc. all can.

3, reasonable in design, reduce investment outlay, convenient and practical, operate easily and manage: because of several roads cleaning section is concentrated in together, a few cover facilities have been reduced, thereby reduced cost, saved investment, and compact construction, the staff can reduce mobile and operate easily and manage, in addition, the ways such as recoil cleaning of filtering layer have also been designed, so convenient and practical.

Claims (1)

1, a kind of air supporting method device of disposing of sewage, include sewage lagoon, medicine machine, sump pump, sewage induction pipe in this device, by the air-floatation water purifier that includes inner room and mistress, dissolved air release, slag removal equipment, clear water output pipe, sludge sump, clean water basin, dissolved air water pump, air compressor that concentric tubular structure constitutes, it is characterized in that:

(1) at the inside and outside indoor dissolved air release that is separately installed with of air-floatation water purifier;

(2) height of inner room is lower than mistress's height;

(3) leaving a distance, inner room bottom, filtering layer is installed, clear water output is established in the inner room bottom under the filtering layer;

(4) be installed in the sewage induction pipe of mistress bottom, tangent with mistress's locular wall or near parallel.