臭氧催化氧化处置西北矿区含铊砷镉废水研究  

Study on the Treatment of Wastewater Containing Thallium, Arsenic and Cadmium by Ozone Catalytic Oxidation in Northwest Mining Are

作　　者：胥俊玮 吴钢[2] 余关龙[2] 钟康 苏志来 汤宇 Xu Junwei;Wu Gang;Yu Guanlong;Zhong Kang;Su Zhilai;Tang Yu(The Fifth Engineering.Co.,Ltd of China Railway First Engineering Group,Changsha 410116;School of Hydraulic and Environmental Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]中铁五局集团第一工程有限责任公司,湖南长沙410116 [2]长沙理工大学水利与环境工程学院,湖南长沙410114

出　　处：《广东化工》2022年第21期187-189,212,共4页Guangdong Chemical Industry

摘　　要：为了有效去除西北矿区尾矿库废水中铊、砷、镉等重金属污染物,使处理出水达到污水综合排放一级标准。本研究采用石灰中和、臭氧预氧化结合铁锰氧化体强化混凝沉淀技术对尾矿区的污水进行处理。结果表明,当采用生石灰调节pH至11时,铜和镉的去除率分别可以达到95%和94%。投加3 mg/L Fe(Ⅱ)以及1.4 mg/L O_(3)预氧化后,再投加0.5 mg/L Mn(Ⅶ)的条件下结合PAC混凝沉淀法处理,能够同时有效去除铜矿生产废水中的铊和砷污染。采用上述方法处理矿水相比于Fe(Ⅵ)氧化助凝法能大幅度降低成本。In order to effectively remove thallium, arsenic, cadmium and other heavy metal pollutants from tailings pond wastewater in Northwest mining area,the treated effluent can reach the first level of comprehensive sewage discharge standard. In this study, lime neutralization, ozone pre-oxidation combined with iron manganese oxide enhanced coagulation and precipitation technology was used to treat wastewater in tailings area. The results show that when the pH is adjusted to 11by quicklime, the removal rates of copper and cadmium can reach 95 % and 94 %, respectively. After adding 3 mg/L Fe(Ⅱ), 1.4 mg/L O3 pre-oxidation, and 0.5 mg/L Mn(Ⅶ) combined with PAC coagulation and precipitation process, thallium and arsenic pollution in copper mine production wastewater can be effectively removed at the same time. Compared with Fe(Ⅵ) oxidation coagulation method, the above method can significantly reduce the cost of ore water treatment.

关 键 词：石灰中和法 臭氧氧化 铁锰氧化 尾矿水 废水净化 

分 类 号：X522[环境科学与工程—环境工程]