超声波辅助去除铅锌选矿外排废水中的硫化物  

Sulphide Removal from Wastewater of Zinc-lead Beneficiation with the Assistance of Ultrasonic Wave

作　　者：曾懋华[1] 龙来寿[1] 奚长生[1] 赵旭光[1] 

机构地区：[1]韶关学院

出　　处：《金属矿山》2011年第2期146-148,152,共4页Metal Mine

基　　金：广东省教育部产学研结合项目(编号:2009B090300186);韶关市科技创新项目(编号:韶科2008-07)

摘　　要：针对广东韶关某大型铅锌矿选矿外排废水中超标的硫化物,采用超声波辅助下的氧化—混凝沉淀法对其进行去除试验,探讨了氧化剂种类和用量、混凝剂种类和用量及超声波辅助反应时间对S2-去除效果的影响。结果表明:在常温下向该废水中加入用量为20 mg/L的氧化剂H2O2,用量为150 mg/L的混凝剂FeSO4和用量为1.0 mg/L的助凝剂聚丙烯酰胺,在超声波辅助下搅拌反应20 min,S2-离子的去除率可达到95%以上,含量可降到0.14 mg/L以下,废水水质达到国家排放标准。Due to the excessive sulfide in wastewater discharged from large-scale lead-zinc dressing plant,the ultrasound-assisted oxidation-coagulation .sedimetation melhod was used tofind out the S2- removal effect with the variation of the type and dosage of the oxidant,the coagulant＇s type and dosage and the reaction time of ultrasonic. The results showed that： at room temperature,with addition of the oxidant H2O2 of 20 mg/L, and the coagulant FeSO4 dosage of 150 mg/L, coagulant-assisted polyacrylamide of 1.0 mg/L, under the assistance of ultrasonic wave at 20 min stirring,S2- ion removal rate could reach above 95% , and its content can be reduced to 0.14 mg/L below,which leads to the wastewater quality reach the national emission standards.

关 键 词：铅锌选矿废水 氧化-混凝 超声波 S^2-去除率 

分 类 号：X832[环境科学与工程—环境工程]