摘要
对某黄金冶炼高砷废水进行了硫化沉淀与中和沉淀的试验研究,考察了药剂用量、酸度等因素对除砷效果的影响。研究表明,控制适宜的药剂用量及p H值,一级硫化沉淀与一级中和沉淀的除砷率均能达到99.9%以上,经过二级铁盐的深化处理,出水含砷均小于0.5 mg/L。从处理效果、成本、产渣量及操作环境等因素分析,工程上应用中和沉淀工艺处理该废水具有较好的经济效益与环境效益。
Laboratory studies on the treatment of high-arsenic wastewater from a gold smelter were performed with sulfide precipitation and neutralization precipitation process respectively. Main influence factors such as rea- gent dosage and acidity, etc. were investigated. Results showed that above 99.9% of arsenic can be removed with one stage treatment of sulfide precipitation or neutralization precipitation process, and after second stage treatment of iron salt sedimentation, the arsenic concentration in the wastewater can be reduced to below 0. 5mg/l. Compara- tive analysis of two processes with respect to treatment effects, costs, residue output and operation environment, etc. indicated that neutralization precipitation process has better economic and environmental benefits for industrial application.
出处
《矿冶》
CAS
2015年第4期73-75,88,共4页
Mining And Metallurgy
基金
国家重大科学仪器设备开发专项(012YQ22011905)
关键词
黄金冶炼
高砷废水
硫化沉淀
中和沉淀
gold smelting
high-arsenic wastewater
sulfide precipitation
neutralization precipitation
作者简介
黄海辉，硕士，工程师，从事有色金属冶金研究工作。
