摘要
采用悬浮载体活性污泥法工艺(SCAS)和吸附活性污泥法(BSAS)脱氮工艺进行了城市污水脱氮试验。结果表明,后者具有更好的脱氮能力。BSAS工艺采用强化吸附手段让回流污泥与原水在缺氧条件下混合(<30min),促进贮存物质的积累,加速内源反硝化作用。实现在较短的水力停留时间和高有机负荷下的有机氧化与硝化作用的同时进行,对旧污水处理设施改造和新建污水厂的设计都可应用。
Study on denitrification of municipal sewage by using suspended carrier activated sewage (SCAS) and biosorption activated sludge process (BSAS) have been conducted. The results showed that the denitrification capability of the BSAS process was better than SCAS process, due to enhancement of adsorbing measure, and let the return sludge mixed with raw wastewater under anaerobic condition for less than 30 min. This process could promote accumulation of organic substrate and accelerate endogenous denitrification. Oxidation and nitrification of organic substrate could occur simultaneously under the condition of organic load and short HRT. The BSAS process could be applied to upgrade wastewater treatment plants for denitrification.
出处
《上海环境科学》
CAS
CSCD
1995年第9期17-20,共4页
Shanghai Environmental Sciences
基金
上海市政工程局"八五"重点项目
关键词
城市污水
脱氮
悬浮载体
硝化
反硝化
SCAS
Municipal sewage Denitrification Suspended carrier Biosorption activated sludge process Nitrification
