天然锰矿对再生水中有机污染物的深度处理研究  

Research on advanced treatment of organic pollutants from secondary effluent by natural manganese ore

作　　者：张金康 蔡言安[1] 李佶成 毕学军[1] 何静 ZHANG Jinkang;CAI Yan’an;LI Jicheng;BI Xuejun;HE Jing(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学环境与市政工程学院,青岛266525

出　　处：《青岛理工大学学报》2022年第5期88-95,共8页Journal of Qingdao University of Technology

基　　金：国家重点研发计划项目(2017YFC0403404)。

摘　　要：以石英砂(QS)滤料为对照组,研究了天然锰矿(MS)滤料对污水处理厂二级出水中残留有机物的过滤去除效能及机理。运行结果表明,QS和MS滤柱对UV_(254)的去除率分别为3%和20%;对TOC的去除效率为-0.2%和12%。同时,三维荧光光谱显示,QS不能有效降低荧光强度,而MS则降低6.96%;氯消毒实验表明,QS能将三氯甲烷和四氯化碳的生成量降低8.18%和18.84%,而MS则分别降低46.9%和71.31%。MS是一种功能性天然材料,污水中常见的阳离子Ca^(2+),Mg^(2+),NH_(4)^(+)对有机物的去除有促进作用,而阴离子却表现出抑制效果,其抑制大小关系为PO_(4)^(3-)>NO_(3)^(-)>SO_(4)^(2-)>Cl^(-)。MS对有机物的控制机理包括,MS对有机物的直接降解过程和MS催化高级氧化降解过程。The removal of residual organic matter from the secondary effluent of a wastewater treatment plant was studied by using natural manganese ore sand(MS)filter and quartz sand(QS)filter.The results indicated that the average removal efficiency of UV_(254) by QS and MS filter column was 3%and 20%respectively.The average removal efficiency of TOC was-0.2%and 12%.At the same time,the three-dimension fluorescence spectrum showed that QS could not effectively reduce the fluorescence intensity,while MS reduced by 6.96%.Chlorine disinfection experiment also showed that QS could reduce the by-products of trichloromethane and carbon tetrachloride by 8.18%and 18.84%respectively,and MS by 46.9%and 71.31%respectively.It was found that MS is a functional natural material.Cationic Ca^(2+),Mg^(2+)and NH^(+)_(4) commonly found in sewage have a promoted effect on the removal of organic matter,while anion shows an inhibitory effect and the inhibitory relationship is PO_(4)^(3-)>NO_(3)^(-)>SO_(4)^(2-)>Cl^(-).The removal mechanism for organic residues mediated by MS includes the direct adsorption-degradation process and the advanced self-catalytic degradation process.

关 键 词：天然锰矿 滤池 二级出水 再生水 

分 类 号：X703[环境科学与工程—环境工程]