膜科学与技术

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Efficiency and mechanism on treatment of micro-polluted source water by attapulgite-MBR combined process

Authors： SHI Wenxin, DUAN Yingsui, ZHANG Bing, YI Xuesong

Units： State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China

KeyWords： membrane bioreactor (MBR); attapulgite clay; micro-polluted water

ClassificationCode：TU991.2

year,volume(issue):pagination： 2016,36(2):96-101

Abstract：

Attapulgite clay，a kind of hydrated magnesium aluminum silicate mineral，has a perfect sorptive quality. In this paper, the effect of attapulgite clay dosed to a MBR-attapulgite clay system was studied, besides compared experiments between the conventional MBR and MBR-attapulgite clay system for disposing the micro-polluted water were carried out and the basic performance of those two MBRs was investigated. The results demonstrated that both of MBRs could remove CODMn, ammonia, UV254, TOC, and turbidity successfully. The membrane fouling in MBR-attapulgite clay system was much slighter than that in MBR system. The sludge mixture particle size in MBR-attapulgite was much smaller size than that in the MBR. Moreover, and the Zeta potential of sludge mixture in MBR-attapulgite clay system was about 11–34% lower than that in MBR. FT-IR indicated that the structure and composition of the organic matter in the mixture liquor were changed by dosing attapulgite. Moreover, the types and content of organic matter were also reduced, and the efficiency of removing organic contaminants was enhanced and thus membrane organic pollution was reduced. Excitation–emission matrix (EEM) analysis proved that pollutants degradation performance in MBR-attapulgite clay system was better than that in MBR.

Funds：

城市水资源与水环境国家重点实验室（哈尔滨工业大学）自主课题（2013DX12）

AuthorIntro：

第一作者简介：时文歆（1970-），男，河南人，博士，教授，博士生导师，从事膜分离技术的研究. Email: swx@hit.edu.cn

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