Rain events and their effect on effluent quality studied at a full scale activated sludge treatment plant

被引：35
作者：
Wilen, B. -M. [1 ]
Lumley, D.
Mattsson, A.
Mino, T.
机构：
[1] Chalmers, SE-41296 Gothenburg, Sweden
[2] Gryaab AB, SE-41834 Gothenburg, Sweden
[3] Univ Tokyo, Inst Environm Studies, Grad Sch Frontier Sci, Tokyo 1136656, Japan
来源：
WATER SCIENCE AND TECHNOLOGY | 2006年 / 54卷 / 10期
关键词：
activated sludge; effluent quality; floc stability; nitrogen removal; phosphorus removal; rain events;
D O I：
10.2166/wst.2006.721
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effect of rain events on effluent quality dynamics was studied at a full scale activated sludge wastewater treatment plant which has a process solution incorporating pre-denitrification in activated sludge with post-nitrification in trickling filters. The incoming wastewater flow varies significantly due to a combined sewer system. Changed flow conditions have an impact on the whole treatment process since the recirculation to the trickling filters is set by the hydraulic limitations of the secondary settlers. Apart from causing different hydraulic conditions in the plant, increased flow due to rain or snow-melting, changes the properties of the incoming wastewater which affects process performance and effluent quality, especially the particle removal efficiency. A comprehensive set of on-line and laboratory data were collected and analysed to assess the impact of rain events on the plant performance.
引用
收藏
页码：201 / 208
页数：8
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