机械清洗法对MBR膜泥饼层的影响

尤朝阳; 刘汤勋; 张丹; 肖晓强; 刘志寅

环境工程学报

机械清洗法对MBR膜泥饼层的影响

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尤朝阳, 刘汤勋, 张丹, 肖晓强, 刘志寅. 机械清洗法对MBR膜泥饼层的影响[J]. 环境工程学报, 2013, 7(2): 598-602.

引用本文:

尤朝阳, 刘汤勋, 张丹, 肖晓强, 刘志寅. 机械清洗法对MBR膜泥饼层的影响[J]. 环境工程学报, 2013, 7(2): 598-602.

You Chaoyang, Liu Tangxun, Zhang Dan, Xiao Xiaoqiang, Liu Zhiyin. Effect of mechanical cleaning method on MBR membrane sludge cake layer[J]. Chinese Journal of Environmental Engineering, 2013, 7(2): 598-602.

Citation:

You Chaoyang, Liu Tangxun, Zhang Dan, Xiao Xiaoqiang, Liu Zhiyin. Effect of mechanical cleaning method on MBR membrane sludge cake layer[J]. Chinese Journal of Environmental Engineering, 2013, 7(2): 598-602.

机械清洗法对MBR膜泥饼层的影响

1.
南京工业大学环境学院,江苏省工业节水减排重点实验室,南京 210009
基金项目:
南京工业大学青年教师学术基金重点项目

江苏省环境科学研究院江苏省环境工程重点实验室开放项目(KF2010001)
中图分类号: X703

Effect of mechanical cleaning method on MBR membrane sludge cake layer

1.
College of Environment, Nanjing University of Technology, Jiangsu Key Laboratory of Industrial Water- Conservation & Emission Reduction, Nanjing 210009, China
Fund Project:

摘要: 膜污染是制约MBR发展的瓶颈。考察投加ABS颗粒对MBR膜组件上膜泥饼层的影响,并设对照实验。结果表明,对照MBR 膜通量下降速度快,膜污染严重,膜表面上累积厚厚的泥饼层,而在ABS MBR中膜通量下降速度则缓慢的多,且膜上泥饼层积累量则明显少于对照MBR;曝气量越大,颗粒运行的速度也越快,泥饼层被撞落量也越多;颗粒以碰撞角度为45°冲刷膜的情况下,泥饼层掉落效果明显增加;泥饼层包裹的膜丝根数越多,泥饼层的静摩擦力和保持泥饼层不被破坏的力也越大,泥饼层就越难被冲刷掉。SEM照片显示,ABS MBR的膜孔堵塞要严重于对照MBR,表面的褶皱要较对照MBR多。
- 机械清洗 /
- 颗粒速度 /
- 碰撞角度 /
- 泥饼层力
Abstract: Membrane fouling is an important factor of restricting the application of membrane bioreactor (MBR). The mechanical cleaning technology was used in MBR to control the sludge cake formation on membrane. The result indicated that the membrane flux was declined quickly in controlled MBR and membrane fouling was serious, where a thick sludge cake layer was deposited on membrane surface. In the ABS MBR, the membrane flux was declined slowly and the sludge cake on membrane was obvious less than that of the controlled membrane. The larger air flow rate was, the faster speed of particle was. Particles collision the membrane at a 45 degree angle could wash out down more sludge compared to particle straight collision. The static friction force and the force that protect the structure of larger sludge were became larger when more membrane silks were contained in sludge cake. SEM picture showed that the membrane hole of ABS MBR was clogged more serious than that of the controlled MBR and the membrane surface of controlled MBR was smooth than that of the ABS MBR.
- mechanical cleaning /
- particle speed /
- collision degree /
- force of sludge cake

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机械清洗法对MBR膜泥饼层的影响

1. 南京工业大学环境学院,江苏省工业节水减排重点实验室,南京 210009

收稿日期: 2011-09-25

基金项目:

南京工业大学青年教师学术基金重点项目

江苏省环境科学研究院江苏省环境工程重点实验室开放项目(KF2010001)

关键词:

摘要: 膜污染是制约MBR发展的瓶颈。考察投加ABS颗粒对MBR膜组件上膜泥饼层的影响,并设对照实验。结果表明,对照MBR 膜通量下降速度快,膜污染严重,膜表面上累积厚厚的泥饼层,而在ABS MBR中膜通量下降速度则缓慢的多,且膜上泥饼层积累量则明显少于对照MBR;曝气量越大,颗粒运行的速度也越快,泥饼层被撞落量也越多;颗粒以碰撞角度为45°冲刷膜的情况下,泥饼层掉落效果明显增加;泥饼层包裹的膜丝根数越多,泥饼层的静摩擦力和保持泥饼层不被破坏的力也越大,泥饼层就越难被冲刷掉。SEM照片显示,ABS MBR的膜孔堵塞要严重于对照MBR,表面的褶皱要较对照MBR多。

English Abstract

Effect of mechanical cleaning method on MBR membrane sludge cake layer

1. College of Environment, Nanjing University of Technology, Jiangsu Key Laboratory of Industrial Water- Conservation & Emission Reduction, Nanjing 210009, China

Received Date: 2011-09-25

Fund Project:

Keywords:

Abstract: Membrane fouling is an important factor of restricting the application of membrane bioreactor (MBR). The mechanical cleaning technology was used in MBR to control the sludge cake formation on membrane. The result indicated that the membrane flux was declined quickly in controlled MBR and membrane fouling was serious, where a thick sludge cake layer was deposited on membrane surface. In the ABS MBR, the membrane flux was declined slowly and the sludge cake on membrane was obvious less than that of the controlled membrane. The larger air flow rate was, the faster speed of particle was. Particles collision the membrane at a 45 degree angle could wash out down more sludge compared to particle straight collision. The static friction force and the force that protect the structure of larger sludge were became larger when more membrane silks were contained in sludge cake. SEM picture showed that the membrane hole of ABS MBR was clogged more serious than that of the controlled MBR and the membrane surface of controlled MBR was smooth than that of the ABS MBR.

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机械清洗法对MBR膜泥饼层的影响

Effect of mechanical cleaning method on MBR membrane sludge cake layer

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机械清洗法对MBR膜泥饼层的影响

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Effect of mechanical cleaning method on MBR membrane sludge cake layer

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