Benchmarks for the energy demand of nutrient removal plants

被引：35
作者：
Nowak, O [1 ]
机构：
[1] Vienna Tech Univ, Inst Water Qual & Waste Management, A-1040 Vienna, Austria
来源：
WATER SCIENCE AND TECHNOLOGY | 2003年 / 47卷 / 12期
关键词：
activated sludge; COD balances; energy demand; municipal wastewater; nutrient removal;
D O I：
10.2166/wst.2003.0637
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The energy demand of municipal wastewater treatment plants for nutrient removal equipped with primary clarifiers, activated sludge system, anaerobic sludge digestion, and CHP is evaluated theoretically, on the basis of COD balances. Operational experience from energy-efficient Austrian treatment plants confirms that the demand on external electrical energy can be kept as low as 5 to 10 kWh/(pe.a) depending on the N:COD ratio in the raw wastewater. A low N:COD ratio helps to keep not only the effluent nitrogen load low, but also the energy demand. Measures to minimise the energy demand at treatment plants and to reduce the nitrogen load are discussed.
引用
收藏
页码：125 / 132
页数：8
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