城市污泥-膨润土颗粒吸附剂的制备及其处理含铅废水的研究  

Study on Preparation of Municipal Sludge-bentonite Granulated Absorption Materials and Processing of Wastewater Containing Lead Ion

作　　者：陈红燕[1] 羊依金[1] 张卓君[1] 信欣[1] 谭显东[1] 刘风梅[1] 

机构地区：[1]成都信息工程学院资源环境学院,四川成都610225

出　　处：《非金属矿》2009年第6期53-56,共4页Non-Metallic Mines

基　　金：成都信息工程学院自然科学与技术发展基金(CSRF200708)

摘　　要：通过焙烧实验和振荡吸附实验,研究了城市污泥-膨润土颗粒吸附剂的制备及其在含铅离子废水中的吸附特性。结果表明,颗粒吸附剂制备的最佳组合条件为城市污泥∶膨润土=6∶4(质量比),粒径为1.2mm,在550℃下焙烧2h;在温度为25℃左右,pH值为4,Pb2+初始浓度为30mg/L、吸附剂用量为10g/L、吸附时间为30min条件下,吸附剂对废水中的Pb2+的去除效率可达92.55%。吸附剂对Pb2+的吸附符合Langmuir吸附方程。Preparation of municipal sludge-bentonite granulated absorbent and its adsorption properties used for the Pb2＋ solution were studied by roasting and oscillating adsorption experiment. The optimum conditions of preparing particle adsorbent were as following： the mass of municipal sludge to bentonite was 6∶4, particle diameter was 1.2mm, and roasting temperature was 550℃ for 2h. The lead removal rate could be reached to 92.55% when the oscillating adsorption temperature was 25℃, adsorption time was 30 minters, and the solution of pH value was 4 respectively. And the absorbent of adsorption to Pb^2＋ is suit for Langmuir equation.

关 键 词：城市污泥 膨润土 颗粒吸附剂 铅离子 

分 类 号：TQ424.2[化学工程] X703[环境科学与工程—环境工程]