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为探究改性介孔碳对饮用水中污染物的去除效果,利用氯化铁和氧化锰分别对介孔碳进行改性,对硫化物、二氯乙酸和大肠杆菌这3种指标的去除效能和时间、吸附剂投加量等影响因素进行了研究。结果表明除C-Mn O复合材料对单一硫化物的吸附量低于介孔碳外,在各种不同条件下改性材料均比介孔碳的吸附能力有一定提高。此外,对于硫化物、二氯乙酸和大肠杆菌的混合污染物,C-Fe复合材料和C-Mn O复合材料对硫化物的去除率在介孔碳98.6%基础上增加至99.98%和99.73%;C-Fe复合材料和C-Mn O复合材料对二氯乙酸去除率在介孔碳43.62%基础上分别提升到45.37%和44.92%;介孔碳能吸附90%的大肠杆菌,改性材料对大肠杆菌的吸附能力略有提升,均从90%升至95%,改性介孔碳去除污染物优势明显。
In order to explore the effect of modified mesoporous carbon on the removal of pollutants in drinking water, the mesoporous carbon was modified by ferric chloride and manganese oxide, respectively. The removal efficiency of three indicators of sulfide, dichloroacetic acid and Escherichia coli And time, the dosage of adsorbent and other influencing factors were studied. The results show that the adsorption capacity of modified materials over mesoporous carbon is improved under a variety of conditions except that the C-Mn O composite adsorbs less amount of monosulfides than mesoporous carbon. In addition, the sulfide removal efficiency of C-Fe composites and C-MnO composites for mixed contaminants of sulfides, dichloroacetic acid and E. coli increased to 99.98% and 99.73% on mesoporous carbon 98.6% ; The removal rate of dichloroacetic acid of C-Fe composite and C-Mn O composite material increased to 45.37% and 44.92% respectively on the basis of mesoporous carbon 43.62%; mesoporous carbon could adsorb 90% of Escherichia coli, modified material The adsorption capacity of E. coli slightly increased, both from 90% to 95%, modified mesoporous carbon to remove pollutants obvious advantages.