The effect of reactor configuration and operational mode on Microthrix parvicella bulking and foaming in nutrient removal activated sludge systems

被引：9
作者：
Noutsopoulos, C [1 ]
Mamais, D [1 ]
Andreadakis, AD [1 ]
机构：
[1] Natl Tech Univ Athens, Fac Civil Engn, Dept Water Resources, GR-15773 Athens, Greece
来源：
WATER SCIENCE AND TECHNOLOGY | 2002年 / 46卷 / 1-2期
关键词：
bulking; foaming; intermittent aeration; Microthrix parvicella; nutrient removal; plug flow;
D O I：
10.2166/wst.2002.0457
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Three bench-scale nutrient removal activated sludge units were used to examine the effect of the reactor configuration and the intermittent aeration mode on the growth of Microthrix parvicella. According to the results, the plug flow configuration seems to achieve satisfactory Microthrix parvicella control. The imposed concentration gradient for both RBCOD and SBCOD creates a selective advantage for the floc forming bacteria throughout the system (both the anoxic and oxic zones) and limits Microthrix parvicella growth. In terms of the operational mode, the intermittent aeration CSTR nutrient removal system promotes the growth of M. parvicella and deteriorates the settling characteristics of the activated sludge.
引用
收藏
页码：61 / 64
页数：4
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