三种新型浮床载体对微污染水体中氮的去除效果研究  

Removal Effect of Nitrogen from Micro-polluted Water by Three New Floating-bed Carriers in Removing

作　　者：宋姣[1] 周洲[1] 傅大放[1] 杨小丽[1] 陈明[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《安全与环境工程》2013年第5期67-73,共7页Safety and Environmental Engineering

基　　金："十二五"国家科技支撑计划项目(2012BAJ14B01);江苏省太湖治理科研项目(TH2011205;TH2011306)

摘　　要：将丝瓜络、活性炭海绵和竹炭纤维三种生物载体与浮床相结合形成复合立体生物浮床,通过试验比较研究了三种不同载体对污水处理厂尾水中氮类污染物的去除效果。结果表明:三种载体对微污染水体中的氮类污染物均有一定的去除效果。当水力停留时间为3d,丝瓜络载体对总氮的去除效果最好,其去除率达38%左右,最佳填充密度为17%;活性炭海绵载体对总氮的去除效果次之,当填充密度为23%时,总氮的平均去除率最大,达到25%左右;竹炭纤维在不同填充密度下对总氮的去除率没有明显变化,其平均去除率仅为18%左右。三种载体对氨氮的去除效果没有明显的差异,其氨氮的平均去除率可达50%左右。This paper integrates three different biological carriers （Luffa cylindrica sponge,activated car- bon sponge and bamboo charcoal fiber） separately with floating-bed to form three combined three-dimen- sion bio-floating beds and studies the removal effect of nitrogen in effluents of wastewater treatment plants by the three floating-beds. Results show there are certain removal rates of total nitrogen （TN） in three dif- ferent bio-floating beds,with the order of Luffa cylindrica sponge~〉activated carbon sponge ~bamboo charcoal fiber with the retention time of 3 days. TN is reduced by around 38G in the Luffa cylindrica sponge bed and 23~ in the activated carbon sponge bed,with the best packing densities of Luffa cylindri- ca sponge and activated carbon sponge being 17G and 23G ,respectively. Bamboo charcoal fiber bed shows no significant difference in the removal of TN at different packing densities,with the average removal rate of 18%. The removal rates of NH3 N by the three different beds are close,which are about 50%.

关 键 词：生物载体 微污染水体 氮 填充密度 

分 类 号：X703.1[环境科学与工程—环境工程]