人工湿地基质的筛选及其对猪场废水厌氧消化液中氨氮吸附性能研究  

Study on constructed wetlands packings selection and its adsorption properties for ammonia nitrogen in digested piggery wastewater

作　　者：刘娜娜[1] 伍钧[1] 郑丹[2] 邓良伟[2] 李淑兰[2] 樊战辉[2] 

机构地区：[1]四川农业大学资源环境学院环境科学与工程系,雅安625014 [2]农业部沼气科学研究所,成都610041

出　　处：《环境工程学报》2011年第4期783-788,共6页Chinese Journal of Environmental Engineering

基　　金：国家科技支撑计划项目(2008BADC4B04)

摘　　要：采用静态吸附实验,对比了岷江砂、沱江砂、青衣江砂、沸石、活性炭对猪场废水厌氧消化液中氨氮的吸附去除效率,基于氨氮去除能力、购买成本与运费的比较,筛选出性价比较高的基质——岷江砂作为四川地区人工湿地的基质处理猪场废水厌氧消化液。吸附实验表明,砂对氨氮的去除率随振荡时间和投加量的增加而增加。通过吸附等温曲线Langmuir方程和Freundlich方程拟合,计算得出砂的最大吸附容量为0.418 mg/g,与实测吸附容量相差不大。Ammonia nitrogen removal efficiencies of five different types of substrates-Minjiang sand,Tuojiang sand,Qingyijiang sand,zeolite and activated carbon-by means of static adsorption experiment were compared.The Minjiang sand with the highest performance price ratio was screened to be the packing of this experiment,based on its high ammonia removal capability,low purchase costs and low transportation costs.The adsorption experimental results showed that ammonia nitrogen removal efficiencies of sand increased as contact time and dosing quantity increased.The data obtained in these experiments were in accordance with Freundlich and Langmuir isotherms.Maximum adsorption capacity of sand calculated from Langmuir Equation was 0.418 mg/g,and that was little different from measured adsorption capacity.

关 键 词：基质筛选 猪场废水厌氧消化液 吸附性能 氨氮 

分 类 号：X703[环境科学与工程—环境工程]