Improvement of nitrogen removal at WWTP Zurich Werdhoelzli after connection of WWTP Zurich-Glatt

被引：6
作者：
Siegrist, H [1 ]
Rieger, L
Fux, C
Wehrli, M
机构：
[1] EAWAG, CH-8600 Dubendorf, Switzerland
[2] Entsorgung & Recycling Zurich, CH-8010 Zurich, Switzerland
来源：
WATER SCIENCE AND TECHNOLOGY | 2004年 / 50卷 / 07期
关键词：
D O I：
10.2166/wst.2004.0410
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Optimisation of nitrifying activated sludge plants towards nutrient removal (denitrification and enhanced P-removal) leads to a substantial reduction of operating costs and improves effluent and operating conditions. At WWTP Zurich-Werdhoelzli, initially designed for nitrification only, an anoxic zone of 28% of total activated sludge volume was installed and allowed 60% nitrogen elimination besides several other optimisations. In 2001 the operation of WWTP Zurich-Glatt was stopped and the wastewater was connected to WWTP Werdhoelzli. To improve nitrogen removal, WWTP Werdhoelzli co-financed two research projects; one for separate digester supernatant treatment with the anammox process operating two SBRs in series and the other applying NH4 sensors for aeration control in order to decrease energy F consumption and raise effluent quality. The results of both projects and the consequences for WWTP Werdhoelzli are discussed in this paper.
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收藏
页码：35 / 43
页数：9
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