Effects of salinity build-up on biomass characteristics and trace organic chemical removal: Implications on the development of high retention membrane bioreactors

被引：76

作者：

Luo, Wenhai ^{[1
]}

Hai, Faisal I. ^{[1
]}

Kang, Jinguo ^{[2
]}

Price, William E. ^{[2
]}

Guo, Wenshan ^{[3
]}

Ngo, Hao H. ^{[3
]}

Yamamoto, Kazuo ^{[4
]}

Nghiem, Long D. ^{[1
]}

机构：

[1] Univ Wollongong, Sch Civil Min & Environm Engn, Strateg Water Infrastruct Lab, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, Sch Chem, Strateg Water Infrastruct Lab, Wollongong, NSW 2522, Australia

[3] Univ Technol Sydney, Sch Civil & Environm Engn, Ctr Technol Water & Wastewater, Sydney, NSW 2007, Australia

[4] Univ Tokyo, Ctr Environm Sci, Tokyo 1130033, Japan

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 177卷

基金：

澳大利亚研究理事会;

关键词：

Membrane bioreactor (MBR); Trace organic chemicals (TrOCs); Salinity build-up; Biomass characteristics; Wastewater treatment; ACTIVATED-SLUDGE CHARACTERISTICS; WASTE-WATER TREATMENT; MBR; CONTAMINANTS; PERFORMANCE; SALT; MICROPOLLUTANTS; BIODEGRADATION; NANOFILTRATION; SUBSTANCES;

D O I：

10.1016/j.biortech.2014.11.084

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study investigated the impact of salinity build-up on the performance of membrane bioreactor (MBR), specifically in terms of the removal and fate of trace organic chemicals (TrOCs), nutrient removal, and biomass characteristics. Stepwise increase of the influent salinity, simulating salinity build-up in high retention MBRs, adversely affected the metabolic activity in the bioreactor, thereby reducing organic and nutrient removal. The removal of hydrophilic TrOCs by MBR decreased due to salinity build-up. By contrast, with the exception of 17 alpha-ethynylestradiol, the removal of all hydrophobic TrOCs was not affected at high salinity. Moreover, salinity build-up had negligible impact on the residual accumulation of TrOCs in the sludge phase except for a few hydrophilic compounds. Additionally, the response of the biomass to salinity stress also dramatically enhanced the release of both soluble microbial products (SMP) and extracellular polymeric substances (EPS), leading to severe membrane fouling. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.

引用

页码：274 / 281

页数：8

共 35 条

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