Transfer of organic matter between wastewater and activated sludge flocs

被引：84
|
作者：
Guellil, A
Thomas, F
Block, JC
Bersillon, JL
Ginestet, P
机构：
[1] Univ Henri Poincare, LCPE, CNRS, UMR 7564, F-54500 Vandoeuvre Nancy, France
[2] INPL, LEM, CNRS, UMR 7569, F-54500 Vandoeuvre Nancy, France
[3] CIRSEE Lyonnaise Eaux, F-78230 Le Pecq, France
来源：
WATER RESEARCH | 2001年 / 35卷 / 01期
关键词：
biosorption; organic matter fractions; granulometric distribution; colloidal fraction; soluble fraction;
D O I：
10.1016/S0043-1354(00)00240-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The organic matter of wastewater was fractionated into settleable (i.e., particulate) and non-settleable (i.e., colloidal+soluble) fractions by settling followed by 0.22 mum filtration. Particulate, colloidal and soluble proportions were found to be relatively constant (45, 31 and 24% of the total COD, respectively). Transfer of soluble fraction always occurred from the wastewater to the activated sludge flocs, whereas bidirectional transfer occurred for the colloidal fraction. The transfer of soluble and colloidal matter reached a steady state after 40 min-mixing and 20 min-mixing, respectively. Desorption of a part of the colloidal organic matter pre-sorbed on the activated sludge flocs was evidenced. The biosorption capacity of activated sludge was around 40-100 mg(COD)gT(SS)(-1). The biosorbable fraction of wastewater represented on average 45% of the non-settleable fraction. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：143 / 150
页数：8
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