CN102476856A

CN102476856A - Polymeric biomembrane stuffing for sewage treatment

Info

Publication number: CN102476856A
Application number: CN2010105536110A
Authority: CN
Inventors: 陈洋
Original assignee: Dalian Chuangda Technology Trade Market Co Ltd
Current assignee: Dalian Chuangda Technology Trade Market Co Ltd
Priority date: 2010-11-22
Filing date: 2010-11-22
Publication date: 2012-05-30

Abstract

The invention provides a polymeric biomembrane stuffing for sewage treatment. Polymeric weaving material is regarded as a biomembrane base material; a popularity of biomembrane base material sheets are suspended in a rectangular frame at equal intervals; the polymeric weaving material is polypropylene, polyethylene or polyvinyl chloride weaving material; and the intervals among the biomembrane base material sheets are not greater than 500 ram. The polymeric biomembrane stuffing for the sewage treatment disclosed by the invention has the advantages of uniform water distribution, uniform air distribution, good mass transfer effect, big specific surface area, high organic removal rate, corrosion resistance and non-blocking performance; meanwhile, the polymeric biomembrane stuffing has aerobic and anoxic microenvironments, good nitrification, good nitrozation and good dephosphorization and is low in price, rich in raw material, easy in transportation and film formation and convenient in popularization and application.

Description

High-molecular biologic film filler in the WWT

Technical field

The present invention relates to the biofilm packing in a kind of WWT, particularly a kind of frame-type polymer braiding material in the sewage biochemical treatment is made biofilm packing.

Background technology

In the sewage biochemical treatment; Filler is biomembranous carrier; Have the effect of holding back suspended substance simultaneously concurrently. therefore, carrier filler is the key of oxidation pond, directly the effect of the biological contact of influence chlorinated chamber. the kind of filler; By the shape branch, honeycomb tubulose, pencil, corrugated, circular radial, peltate, tabular, tubular, irregular particulate state are arranged; By the proterties branch, rigid, soft, semi soft packing, three-dimensional corrugation plastic filler etc. are arranged. at present, commonly used has:

1. the honeycomb tubulose carrier filler processed with glass reinforced plastic or plastics of honeycomb filler. be characterized in material expend little, specific surface is big, voidage is big, light weight, longitudinal strength are big, the smooth no dead angle of honeycomb duct wall, old and feeble microbial film are easy to come off; But load when incompatible with B 0 D when the honeycomb aperture of selecting, biomembranous growth with come off with regard to overbalance, make the filler obstruction easily; If when adopting diffused aeration, jet-flow aeration or surface aeration mode air feed, in honeycomb duct, be difficult to reach the homogeneous flow velocity, contact efficiency and microbial film are upgraded the generation detrimentally affect, and finished-product volume is bigger, carries cumbersome.

2. the soft cellulose filler that soft cellulose filler is general is as raw material with the polyvinyl long filament; With axial cord and soft fiber Shu Zucheng. soft cellulose filler is with the honeycomb filler relatively; Have advantages such as the waste strength of processing is high, the space is variable, difficult obstruction, flexibility is strong, in light weight, specific surface area big, transportation is convenient, easily assembled, convenient management; But the fibrous bundle center is easy to produce anaerobic state, and filler needs long period of soaking in water after using; Otherwise fibrous bundle is easy to caking, and influence is used.

In recent years; The domestic shield formula fibrous packing of also having developed; It is to form with fiber card, axial cord two portions, the nested plastics tubing of interfascicular be used for fixing bundle apart from and the carrier of strand bundle, thereby avoided the balling phenomenon that occurs in the soft cellulose filler; Simultaneously can play good water distribution, gas distribution effect, be a kind of functional, comparatively economical and practical fibrous packing.

3. the semi soft packing semi soft packing is processed by vinyon.This filler had both been paid attention to the influence of the specific surface area of filler to clearance, and fork is considered the fluidised form of current in filler, its existing certain rigid; Certain flexibility is arranged again; No matter, all keep certain shape, and the certain deformation ability is arranged having under the fluid free effect.It has the stronger ability of distribute water and air again, and mass transfer effect is good, and is high to organic removal rate, corrosion-resistant, is difficult for stopping up, easy for installation flexible.

The hollow-fibre membrane filler this be the new packing that development research recently goes out, though it has the big advantage of specific surface area, it costs an arm and a leg, and in use be prone to stop up, thus at present as yet not big area promote the use of.

In sum: the biofilm packing of existing WWT is not that specific surface area is little, voidage is little, is exactly the distribute water and air poor performance; Or be prone to stop up; Or price is high, or transportation and installation inconvenience etc., can not be satisfied fully as common several the technical requirementss of biofilm packing.

Summary of the invention

The object of the present invention is to provide a kind ofly to have simultaneously that specific surface area is big, the distribute water and air performance is good, be difficult for stopping up, and cheap, transportation and biofilm packing easy for installation.

Technical solution of the present invention is: with polymer braiding material is biological film base material, its several pieces hang on equally spacedly between the framework of rectangular parallelepiped. above-mentioned polymer braiding material is Vestolen PP 7052 or Vilaterm or SE braided material. the spacing < 500mm. that above-mentioned several pieces microbial film base materials are mutual

The present invention is owing to be biological film base material and adopt tower structure with polymer braiding material, thereby it has the following advantages:

1. distribute water and air is even, mass transfer effect good, and is high to organic removal rate, corrosion-resistant, is difficult for stopping up;

2. in the unit filler of the three-dimensional arrangement of uniqueness, have aerobic simultaneously and the anoxybiotic microenvironment, promptly can be to the aerobic decomposition of organism, the while has good nitrification again, the Asia is sold to turn into and used and dephosphorization function;

3. cheap, abundant raw material, transportation, to hang film easy, easy to utilize;

4. specific surface area is big, and under price, the performance situation close with traditional semi soft packing, specific surface area is 20-300 times of semi soft packing, i.e. 2000-3000 rice m/ rice m.．

Description of drawings:

Fig. 1 is a structural representation of the present invention.

Provide embodiments of the invention below, and combine accompanying drawing to do further to detail:

Embodiment 1; With polypropylene woven cloth (being commonly called as the snakeskin bag) is the catalytic oxidation device that the microbial film base-material is used for 8 tons of day processing; Because the length of the settling tank of catalytic oxidation device is respectively 2000,500,1000mm, so the length of the rectangular parallelepiped framework that the present invention adopted is respectively 1960,480,800mm, though the polypropylene woven cloth that is 480 * 800mm2 with 130 specifications hangs on the framework of rectangular parallelepiped with the spacing of asking 15 nosebleeds each other equably.; The specific surface area s of biofilm packing is inversely proportional to than with biomembranous asking apart from L; Available following formulate s ratio=2/L that is to say that spacing is more little, and specific surface area is big more; Spacing is big more, and specific surface area is more little, and promptly the area of mass transfer reaction face is more little; Cause wastewater treatment efficiency to descend significantly. still, pursue bigger specific surface area egregiously, make spacing too small; Then can cause the gas distribution distribution performance to descend, even ill effect such as obstructions takes place, so present embodiment adopts the spacing of mm. show through trial run: the C ODcr of intaking is 200_400mg/L; Water outlet C ODcr; J, in 60mg/L, and water quality infuses transparent, no suspended substance, no stink peculiar smell clearly, wastewater treatment efficiency is good.

Embodiment 2; With woven polyethylene cloth (being commonly called as the snakeskin bag) is that the microbial film base-material is used for day catalytic oxidation device of processing loo ton; Because the length of the settling tank of catalytic oxidation device is respectively 32800,2650,2700ram; Therefore the length of the rectangular parallelepiped framework that the present invention adopted, wide, height are respectively 32600,2600,1800mm, are that the polypropylene woven cloth of 2600 x 1800mm2 hangs on the framework of rectangular parallelepiped with the spacing of mutual 20mm equably with 1630 specifications.

Embodiment 3; With SE woven cloth (being commonly called as the snakeskin bag) is the catalytic oxidation device that the microbial film base-material is used for 200 tons of day processing; Because the length of the settling tank of catalytic oxidation device is 46400,3720,27000ram; Therefore the length of the rectangular parallelepiped framework that the present invention adopted be respectively 46000,3700,1800ram, be that the polypropylene woven cloth of 3700 x 1800mm2 hangs on the framework of rectangular parallelepiped with the spacing of mutual 25mm equably with 3840 specifications.

Claims

1. the high-molecular biologic film filler in the WWT is characterized in that with polymer braiding material be biological film base material, its several pieces hang on equally spacedly between the framework of rectangular parallelepiped;

(1) the high-molecular biologic film filler in the described WWT is characterized in that above-mentioned polymer braiding material is Vestolen PP 7052 or Vilaterm or SE braided material.