摘要
根据传统好氧硝化和缺氧反硝化生物脱氮的工艺原理 ,开发了一体化生物膜反应器 ,并对其进行了处理生活污水的试验研究。试验结果表明 ,在有机负荷提高的前提下 ,通过对进水方式和曝气速率的调节 ,反应器对 COD和 TN的去除率达到 97%和82 % ;污泥活性测定表明 ,硝化反应和反硝化反应分别在反应器的好氧区和缺氧区占优势 ,但由于生物膜内部微环境的存在 ,反应器不同区域均有同时硝化和反硝化 ( SND)现象的发生。
A combined biofilm reactor was developed on the principle of traditional oxic/anoxic nitrogen removal process and used for the treatment of domestic wastewater. Experimental result showed that COD and TN removal efficiencies of the reactor came up to 97% and 82% respectively under the optimal conditions in spite of the increased organic load. Control was achieved by varying aeration rate and wastewater inlet position. Microorganism activity assay demonstrated that nitrification occurred mainly in the aerobic zone and denitrification in the anoxic zone. Simultaneous nitrification and denitrification (SND) also happened throughout the reactor due to the existence of microenvironment in the biofilm.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2004年第6期437-440,共4页
Environmental Pollution & Control
