DENITRIFICATION IN A NONNITRIFYING ACTIVATED-SLUDGE SYSTEM

被引：16

作者：

LYNGA, A

BALMER, P

机构：

来源：

WATER SCIENCE AND TECHNOLOGY | 1992年 / 26卷 / 5-6期

关键词：

DENITRICATION; NITROGEN REMOVAL; ACTIVATED SLUDGE; HIGH-RATE PROCESS; PILOT PLANT;

D O I：

10.2166/wst.1992.0551

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Post-nitrification and recycling of the nitrified effluent to an anoxic zone in an activated sludge system for denitrification is proposed as a potentially cost-effective method for nitrogen removal in existing activated sludge treatment plants. Denitrification in a non-nitrifying activated sludge system with a SRT of 3-4 days has been studied in pilot scale. The results show that denitrification rates of at least 10 g NO3-N/(kgVSS h) can be achieved. At COD/NO3-N ratios above 15, nitrate supply appears to control the denitrification rate while at COD/NO3-N ratios below 15 the rate appears to be controlled by the supply of easily biodegradable organic matter.

引用

页码：1097 / 1104

页数：8

共 11 条

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