欧洲除磷脱氮技术发展的趋向

TRENDS OF DENITRIFYING AND DEPHOSPHORIC TECHNIQUES IN EUROPE

为了保护水体,欧共体于1991年颁布了有关法令,其中对污水厂出水的 N、P含量提出了明确的要求,本文介绍了欧洲各国为达到这一目标所采取的相应措施以及利用土地处理系统、改型生物滤池工艺和改型 AB 活性污泥法进行除磷脱氮等技术和取得的效果。文中还对污泥流程出水单独处理工艺做了介绍。

For protection of natural water bodies,definite requirements on N and P contents in effluent of wastewater treatment plants had raised by acts issued in 1991 by EEC.The responsible measures adopted by various European countries to meet the requirements and the effects of land treatment system,varied biofilter and AB activated sludge process to removal N and P are described.The independent treatment process of effluent from sludge treatment system is also introduced.