Biodegradability of activated sludge organics under anaerobic conditions

被引：55

作者：

Ekama, G. A. ^{[1
]}

Sotemann, S. W. ^{[1
]}

Wentzel, M. C. ^{[1
]}

机构：

[1] Univ Cape Town, Dept Civil Engn, Water Res Grp, ZA-7701 Cape Town, South Africa

来源：

WATER RESEARCH | 2007年 / 41卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

wastewater treatment; activated sludge; biodegradability; anaerobic digestion; model validation;

D O I：

10.1016/j.watres.2006.08.014

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

From an experimental and theoretical investigation of the continuity of activated sludge organic (COD) compounds along the link between the fully aerobic or N removal activated sludge and anaerobic digestion unit operations, it was found that the unbiodegradable particulate organics (i) originating from the influent wastewater and (ii) generated by the activated sludge endogenous process, as determined from response of the activated sludge system, are also unbiodegradable under anaerobic digestion conditions. This means that the activated sludge biodegradable organics that can be anaerobically digested can be calculated from the active fraction of the waste activated sludge based on the widely accepted ordinary heterotrophic organism (OHO) endogenous respiration/death regeneration rates and unbiodegradable fraction. This research shows that the mass balances based steady state and dynamic simulation activated sludge, aerobic digestion and anaerobic digestion models provide internally consistent and externally compatible elements that can be coupled to produce plant wide steady state and dynamic simulation WWTP models. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：244 / 252

页数：9

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