长期非污染膜生物反应器处理含盐污水的现场试验。

A real trial of a long-term non-fouling membrane bioreactor for saline sewage treatment.

机构信息

Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China.

出版信息

Water Sci Technol. 2011;63(7):1519-23. doi: 10.2166/wst.2011.328.

DOI:10.2166/wst.2011.328

PMID:21508559

Abstract

This paper reports on a pilot trial of a novel MBR developed with coarse-pore membrane module by the authors. The plant was operated for 370 days with up to 7 m(3)/d raw saline sewage after 3-mm screening. The plant performed successfully without membrane fouling for 270 days except an accidental power source failure for 30 h, during which membrane was fouled under no aeration and mixing condition. EPS increases in both the reactor and the bio-cake on the membrane surface explained this fouling. The average TSS, COD and TKN removal efficiency were 92, 90, and 93%, respectively, under a high effective permeate flux of 4.8 m/d and a low air-to-water ratio of 15.

摘要

本文报道了作者开发的新型粗孔膜组件膜生物反应器的中试研究。该装置在经过 3mm 筛网过滤后的含盐污水，流量高达 7m³/d 的条件下运行了 370 天。该装置成功运行了 270 天，除了一次意外停电 30 小时导致膜污染外，在此期间，由于没有曝气和混合，膜在缺氧条件下被污染。反应器和膜表面生物膜中的 EPS 增加解释了这种污染。在 4.8m/d 的高有效渗透通量和 15 的低气水比下，TSS、COD 和 TKN 的平均去除效率分别为 92%、90%和 93%。