CN2651240Y

CN2651240Y - Aeration biological filtering pool

Info

Publication number: CN2651240Y
Application number: CNU200320104826XU
Authority: CN
Inventors: 李兴强; 李兴也
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-09
Filing date: 2003-10-09
Publication date: 2004-10-27
Anticipated expiration: 2013-10-09

Abstract

An aeration biological filter comprises a tank and an inlet port in the lower part of the tank and an overflow draining port in the upper part of the tank. The tank is designed into a water distribution area, a bearing layer and a filter material layer in the sequence from top to bottom. The bearing layer is composed of a supporting body and cover plates that are provided on the supporting body. Fissures or breaches are reserved between cover plates that are arranged. An aeration air pipe is provided below the cover plates below the bearing layer. Thus, the cover plates can be soon laid conveniently on the supporting body that is provided on the tank; filter materials are placed on the cover plates, so that an internal structure of aeration biological filter can be formed conveniently. Fissures or breaches are reserved between the arranged cover plates, and it is not necessary to punch holes on the cover plates. Therefore, it is more convenient in making cover plates, lowering construction cost, avoiding being blocked with dirts and providing convenience in reverse flushing.

Description

BAF

Technical field: the utility model is in the sewage disposal, and the microbial film that sewage adheres to by media filtration and filtrate carries out the BAF equipment that biochemical reaction purifies water.

Background technology: the sewage treatment process of BAF and formation is a kind of high-efficiency appliance and technology of sewage disposal.BAF generally is made of the filter material layer of water distributing area, supporting layer, quick-fried gas airduct and attached biological film, and the structure of the structures of each several part and the technological process of formation are a kind of technology of closing property, and needs quick-fried gas in water treatment procedure.Existing supporting layer all is simple monoblock back up pad, and back up pad has through hole or permeable mouth, and processing is installed more bothersome.Filtrate is being piled up in the top of supporting layer.The aeration tube of present BAF all is to be embedded in the cobble, and above do not have supporting plate.Aeration is inhomogeneous, and causes the aeration tube bearing strain easily, causes the obstruction of treatment facility easily, and recoil is cleaned inconvenient, and the efficient of flushing is low, the cost height.Not diligent cleaning is with regard to easy obstruction and inefficiency, if short at interval just the causing of scavenging period is difficult for forming effective microbial film.Thereby influenced the working efficiency of quick-fried gas biological filter.

Summary of the invention:

Purpose of the present invention will solve the BAF structure exactly installation question is set, further to solve the biological aerated filter pond easy ruined technical problem of microbial film that frequently recoils, provide a kind of and be convenient to that installation is set, be convenient to the structure that aqueous vapor is evenly distributed, further avoid the biological aerated filter sewage disposal device of frequent integral inverted flushing.

Sewage disposal device of the present invention is a BAF, the import of pond and bottom, pond, the overflow row mouth on top, pond are arranged, the pond is followed successively by water distributing area, supporting layer, filter material layer from top to bottom, it is characterized in that: supporting layer is made up of supporter and the cover plate that is arranged on the supporter, leave slit or breach between the cover plate of arranging, below the cover plate of supporting layer, be provided with the aeration airduct.Can lay cover plate easily fast on the supporter of pond setting like this, filtrate formation filter material layer is placed in the cover plate top, just can constitute the BAF internal structure easily.Leave slit or breach between the cover plate of arranging, perforate on the cover board, the making of the cover plate of being more convenient for like this, and can reduce cost, and avoid the obstruction of dirt, also be convenient to counterflush.Supporting layer can be one deck, and supporter can be arranged on the top of water distributing area or water distributing area.Supporting layer also can be double-deck, and the first layer is following to be water distributing area, and filtrate is set more than the second layer, and the space of supporting layer can be provided with quick-fried gas airduct and coarse filtration layer between the double-layer cover plate.The water entry that distribution is arranged in the water distributing area, water entry are the grooves that is made of arranged distribution strip and block thing, are stamped cover plate above, leave uniform slit between the cover plate.Can form distribution runner relatively uniformly like this, arrange the even slit between the cover plate, play the effect of uniform distribution aqueous vapor, also will bear the weight of above filtering material of runner and quick-fried gas facility simultaneously.Groove can be provided with cover plate directly as supporter, constitutes the supporting layer of simple structure.Constitute by being arranged on cover plate above the water entry groove, the supporter that cover plate is provided with above, the cover plate that is provided with again above the supporter for double-deck supporting layer, between two-layer cover plate, form the supporting layer internal space, the aeration airduct is installed on spatial top, also be filled with grating gravel pebbles and quartz sand in the supporting layer space, as the coarse filtration layer.Be convenient to support the above filtrate of supporting layer like this, do not make aerating pipe road pressurized, also will guarantee ganging up of gas, water.The below surrounding space of aeration airduct is filled with grating gravel pebbles and quartz sand, filters suspended substance step by step, does not stop up and oppress quick-fried gas airduct to guarantee the cobble and the quartz sand that filter suspended substance.Supporting mass between the two-layer cover plate also can be arranged distribution strip and block thing, and arranged distribution strip and block thing laterally is preferably with uniform circular hole, so that the water of strip and block thing both sides is ganged up.Filtrate is generally the haydite or the quartz sand of 3-8 millimeter, also can be circular or oval filtrate.When the diameter of circular or oval filtrate is big, can be along same central shaft to having through hole, through hole is the taper type through hole.Like this because lower volume difference to some extent on the filtrate, make the filtrate lightness sensation in the upper and heaviness in the lower, can guarantee that through hole vertically discharges when placing filtrate, can well guarantee that through hole is along water (flow) direction up and down, more can guarantee the unimpeded of sewage disposal, effectively prevent between the filtrate and the obstruction of filtrate through hole, and increased area-volume ratio greatly, increased biomembranous reliability and filter effect.

The present invention compared with the prior art, the biological aerated filter apparatus structure is reasonable, layout is simply effective, the structure on top can not produce destroying infection to the structure of bottom; Aeration not only can be to carrying out effective biochemical treatment through removing suspended substance sewage, can also play the effect that effective disturbance is removed when discharging suspended substance; Adopt this structure, quick-fried gas airduct is installed easily, airduct can bearing strain, and the easy-on supporting layer has also played the effect of water distribution uniformity, gas distribution; Backwash effect is good, can hold back most suspended substances for the grating filtering layer between the double-deck supporting layer, utilizes of short duration down draining to fall with regard to flushable, has avoided whole frequent back flushing; The feasible efficient height of disposing of sewage of whole effect, the water processing establishment less investment, the running cost of processing reduces greatly.

Description of drawings: Fig. 1 cuts open synoptic diagram for BAF structure master of the present utility model, and Fig. 2 is its left cross-sectional schematic.Below just elaborate in conjunction with accompanying drawing example of the present utility model.

Specific embodiment:

There are the overflow groove 7 and the water port pipeline on the import of concrete pond 8, bottom, pond and suction culvert 5, top, pond in a kind of aeration in sewage treatment of the present utility model biological filter.The pond sets gradually from top to bottom becomes water distributing area 1, supporting layer, filter material layer 6.The water entry that distribution is arranged in the water distributing area, water entry are the grooves that is made of arranged distribution strip and block cement baffle 2, are stamped cover plate 13 above, leave slit or breach between the cover slip of arranging.This cover plate has constituted the supporting layer of support cobble and quartz sand 4.Support the supporting layer of main filtrate 6 and also be made up of supporter and the cover plate that is arranged on the supporter, cover plate has permeable mouthful of distribution, and permeable mouthful constitutes by leaving the gap between the cover plate 3 of arranging; This supporter is arranged on above the water entry, has formed the supporting layer interior spatial structure between two-layer cover plate 3,13.Below top, supporting layer internal space, upper cover plate, be provided with the aeration airduct 9 of arrangement.Supporter can be set in the pond so easily and lay cover plate 3 fast, filtrate 6 is placed in the cover plate top, can constitute the BAF internal structure quickly and easily.Such cover plate is convenient to make, and can reduce cost and installation costs, reduces the adhesion and the obstruction of dirt, also is convenient to counterflush.In the pond 8 of BAF, overflow groove 7 is arranged at top, and cover plate 3 tops at middle part are being discharged above-mentioned grating filtrate 6 equably.Can the cobble bed course below the filtrate.The supporting layer internal upper part is an aeration airduct 9 between cover plate 3,13.Aeration airduct arranged distribution, the tube wall of aeration airduct is being arranged pore.Sewage enters from the BAF bottom, space through distribution runner and cover plate distribution upwards distributes mobile, filter out suspended substance through the filtering layer that is filled with cobble and quartz sand, and the gas mixed aeration of deriving with aeration tube, and together filter through having biomembranous filter material layer.Just can stop to enter of sewage every for some time, when the sewage draining exit of opening the bottom was discharged sedimentary dirt, suspended substance in time washed out between cobble and the quartz sand middle and lower part being blocked in to utilize the sewage of anti-stream and the quick-fried gas of stirring, discharges from sewage draining exit.Because do not carry out enforceable recoil, and anti-stream is slower, the time is short again, can not keep biomembranous growth on the contrary to the biofilm disruption that has formed at filtrate.A large amount of suspended substances is discharged in discharge precipitation dirt and the local recoil of short period of time, just can recover smooth, the treated state of sewage aeration biofiltration efficiently.

Claims

1, a kind of BAF, the import of pond and bottom, pond, the overflow row mouth on top, pond are arranged, the pond is followed successively by water distributing area, supporting layer, filter material layer from top to bottom, it is characterized in that: supporting layer is made up of supporter and the cover plate that is arranged on the supporter, the paddle hole or the permeable mouth that have distribution between the cover plate of arranging, be provided with the aeration airduct below the cover plate, the cover plate top is a filter material layer.

2, as the said BAF of claim 1, it is characterized in that: the cover plate of arrangement is a cover slip, permeable mouthful of slit or the breach for leaving between the cover plate between the cover slip.

3, as the said BAF of claim 1, it is characterized in that: the water entry that distribution is arranged in the water distributing area, water entry is the groove that is made of arranged distribution strip and block thing, and groove and strip and block object plane are stamped cover plate, leave permeable slit or breach between the cover plate.

4, as claim 1 or 2 or 3 said BAF, it is characterized in that: supporter is an arranged distribution strip and block thing, and the strip and block thing laterally has goes here and there the hole of water.

5, as claim 1 or 2 or 3 said BAF, it is characterized in that: supporting layer constitutes by being arranged on cover plate above the water entry groove, the supporter that cover plate is provided with above, the cover plate that is provided with again above the supporter, the aeration airduct is installed on top, supporting layer space between two-layer cover plate, is filled with grating gravel pebbles and quartz sand in the supporting layer space.

6, as the said BAF of claim 4, it is characterized in that: supporting layer constitutes by being arranged on cover plate above the water entry groove, the supporter that cover plate is provided with above, the cover plate that is provided with again above the supporter, the aeration airduct is installed on top, supporting layer space between two cover plates, is filled with grating gravel pebbles and quartz sand in the supporting layer space.