污废水深度脱除硝酸盐氮技术研究进展

Research Progress on Deep Removal of Nitrate Nitrogen from Polluted Wastewater

基于城市可持续发展的需要,按现有《城镇污水处理厂污染物排放标准》(GB 18918—2002)中的一级A标准,已不能满足部分城市的使用需要。本文从污水深度脱氮的角度,介绍了反硝化深床滤池、硫自养反硝化、氢自养反硝化、电化学脱氮等具有实际工程运用的工艺,对污水厂进行提标改造,从而达到地表Ⅲ、Ⅳ类水质标准或其他高于一级A的地方标准的深度脱氮工艺应用,并为未来污水厂的提标改造提供经验。

Based on the needs of urban sustainable development,the existing Class A standard of the"Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants"(GB 18918—2002)can no longer meet the requirements of some cities.This article introduces processes with practical engineering applications for advanced nitrogen removal from wastewater,such as deep bed denitrification filters,sulfur autotrophic denitrification,hydrogen autotrophic denitrification,and electrochemical denitrification.These processes are used to upgrade wastewater treatment plants to meet surface water quality standards of Class III or IV,or other local standards higher than Class A.This provides valuable experience for future upgrades of wastewater treatment plants.