Combined effects of Cu2+ and Zn2+ on activated sludge process

被引：45

作者：

Beyenal, NY ^{[1
]}

Ozbelge, TA ^{[1
]}

Ozbelge, HO ^{[1
]}

机构：

[1] MIDDLE E TECH UNIV,DEPT CHEM ENGN,TR-06531 ANKARA,TURKEY

来源：

WATER RESEARCH | 1997年 / 31卷 / 04期

关键词：

activated sludge process; HMs; toxicity; biokinetics; inhibition; zinc; copper; WW;

D O I：

10.1016/S0043-1354(96)00300-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aim of this study is to investigate the combined effects of Cu2+ and Zn2+ in a synthetic wastewater (WW) on activated sludge process (ASP) over a wide range of mean cell residence times. Experiments were performed in two phases: (i) experiments without heavy metals (HMs), (ii) experiments with HMs using acclimated microorganisms (MOs). In the first phase, biokinetic constants of the synthetic WW inoculated with seed MOs were determined and a linear relationship between substrate removal efficiency and mean cell residence time was found. In the second phase, experiments were conducted with acclimated MOs for processing a WW containing 1.5 mg Cu2+/L and 9 mg Zn2+/L. A variable relationship between substrate removal efficiency and mean cell residence time was obtained. The net result of the presence of Cu2+ and Zn2+ in a synthetic WW was found to be toxic to the MOs in ASP. (C) 1997 Elsevier Science Ltd.

引用

页码：699 / 704

页数：6

共 14 条

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