Effect of Aeration Intensity on Membrane Fouling of SMBR

秦哲; 徐高田; 徐静; 赵军; 赵朋卫; 李庆

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Effect of Aeration Intensity on Membrane Fouling of SMBR

更新时间：2026-09-14

- Effect of Aeration Intensity on Membrane Fouling of SMBR
- 曝气强度对SMBR膜污染的影响
- Vol. 30, Issue 4, Pages: 370-375(2009)
- 作者机构：
  
  1. 河北大学化学与环境科学学院
  2. 上海大学环境科学与工程系
  3. 上海市环境保护局
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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秦哲, 徐高田, 徐静, et al. Effect of Aeration Intensity on Membrane Fouling of SMBR[J]. 2009, 30(4): 370-375.
DOI：

秦哲, 徐高田, 徐静, et al. Effect of Aeration Intensity on Membrane Fouling of SMBR[J]. 2009, 30(4): 370-375. DOI：

摘要

改变曝气强度是控制SMBR(Submerged Membrane Bioreactor)膜污染的重要手段之一.在不同的曝气强度下考察了膜过滤压差随时间的变化情况

膜阻力构成情况和污泥指数SVI(Sludge Volume Index)的变化对膜污染的影响.结果表明:曝气强度过大或过小

压差上升速率都会增大;随着曝气强度的增大

Ref

Rc在过滤总阻力中所占的比例都会逐渐减小

Rif在过滤总阻力中所占的比例逐渐增大;当曝气强度低于0.88 m3.m-2.h-1时

水力剪切力主要作用于膜污染的消除

而对活性污泥的性质没有多大影响

SVI变化不大

因此压差上升速率随曝气强度的增加而降低;而当曝气强度高于0.88 m3.m-2.h-1时

水力剪切力过大

导致污泥絮体结构被破坏

SVI明显增大

从而加速了膜的污染

使压差上升速率随曝气强度的增加而增加.

Abstract

Changing aeration intensity is one of the important measures to control membrane fouling of Submerged Membrane Bioreactor(SMBR).Under different aeration intensity

variation of membrane filtration pressure with time and the distribution of the membrane filtration resistance

as well as the influence of SVI changing on membrane fouling

were researched.Experimental results indicated that pressure increasing rate could increase when aeration intensity was either too high or too low.With aeration intensity increasing

the proportion of Rp

Ref and Rc in the total filtration resistance gradually decreased

but the proportion of Rif increased.When aeration intensity was less than 0.88 m3·m-2·h-1

hydraulic shear mostly removed membrane fouling

but had little effect on activated sludge

SVI changed little

so pressure increasing rate decreased as aeration increased.When aeration intensity was more than 0.88 m3·m-2·h-1

activated sludge floc was destroyed because of too high hydraulic shear

SVI obviously increased

consequently membrane fouling was worsened

pressure increasing rate increased as aeration intensity increased.

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references

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