Biological Denitrogen in Floating Media Deep Bed Filtration Process
A synergetic process for simultaneously filtration and denitrogenation in two cascaded deep beds was studied for advanced treatment of secondary effluent. Both the deep beds were up-flow and packed with 2m height of 3～4mm polystyrene foam pellets. The first bed was assembled an aerator in its bottom for nitration, and the second bed was added methanol in its influent for denitrificaion. When HRT=1～2 hr, the efficiency of ammonium removal and nitrate was 90％ and 95％ respectively. Turbidity of the effluent was less than 1 NTU. It was also found that backwashing had important effects on system operation.
component deep bed filtration secondary effluent nitrification denitrification backwashing
FAN Rong-Gui FAN Bin LUAN Zhao-Kun
College of Resource and Environmental Engineering Liaoning Technical University Fuxin City,Liaoning The State Key Lab.of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）