混合污泥制备吸附剂回用于污水处理研究

被引:3
作者
潘志辉
梁恒
田家宇
陈忠林
李圭白
机构
[1] 哈尔滨工业大学城市水资源与水环境国家重点实验室
关键词
混合污泥; 吸附剂; 聚合氯化铝铁; 污水处理; 化学强化一级处理;
D O I
暂无
中图分类号
X703 [废水的处理与利用];
学科分类号
083002 ;
摘要
用城市污水厂化学与生物混合污泥为原料,以质量比1∶3浸渍于18.0mol/L浓硫酸中,在550℃下活化1h,可以制备出性能较好的吸附剂.通过检测混合污泥吸附剂的表面物理形态、比表面积、孔结构,铁、铝含量用及元素成分表征其物理化学特性.将混合污泥吸附剂回用于城市污水,去除有机污染物.试验结果表明,吸附剂对UV254的去除率虽然低于商品活性炭,但其对COD的去除率高于商品活性炭.当回用于污水化学强化一级处理时,吸附剂可以大大减少聚合氯化铝铁的投加量.0.3g/L的吸附剂与15mg/L的聚合氯化铝铁联用时,UV254和COD的去除率分别是26.1%和61.6%.投加吸附剂后,混凝剂的投加量减少50%即可达到对UV254和COD同样的去除率.
引用
收藏
页码:845 / 848
页数:4
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