摘要
针对锌冶炼行业含高浓度多种重金属的污酸特性，采用生物制剂配合-水解新工艺进行处理，工业试验运行过程中对污酸及处理后出水中各重金属及氟、氯的浓度进行监测，并对产生的渣样进行分析。结果表明：重金属浓度分别由汞14．78～56．70mg/L、砷13．71-40．15mg／L、锌20．50～58．90mg／L、铅12．8～64．2mg/L、镉2．1～13．6mg/L、铜0．5和1．44mg/L、氟339-512mg/L、氯472-3400mg／L脱除至汞0．029～0．049mg/L、砷0．029-0．065mg／L、锌0．11-0．37mg/L、铅0．1-0．43mg/L、镉低于0．01mg／L、铜低于0．1mg／L、氟0．054-4．99mg/L、氯29．5-43．7mg／L，处理后出水中各重金属含量及氟、氯含量均远低于《污水综合排放标准》（GB8978-1996）。配合渣中的汞含量高达29．95％，可作为汞原料进行回收，水解渣中重金属含量低，便于妥善处理和处置。
Acidic wastewater with high concentration of heavy metals discharged from zinc smelter industry was treated by the novel technology of biologics complex-hydrolyzation, and the removal effect of heavy metals（Hg, As, Zn, Pb, Cd, Cu） and F^-, Cl^- was examined. During stable industrial experiments heavy metals and F^-, Cl^- of acidic wastewater are removed from 14.78-56.70 mg/L Hg^2＋, 13.71-40.15 mg/L As, 20.50-58.90 mg/L Zn^2＋, 12.8-64.2 mg/L Pb^2＋, 2.1-13.6 mg/L Cd^2＋, 0.54-1.44 mg/L Cu^2＋, 339-512 mg/L F- and 472-3400 mg/L Cl^- to 0.029-0.049 mg/L Hg^2＋, 0.029-0.065 mg/L As, 0.11-0.37 mg/L Zn^2＋, 0.1-0.43 mg/L Pb^2＋, 0-0.01 mg/L Cd^2＋, 0-0.1 mg/L Cu^2＋, 0.054-4.99 mg/L F^- and 29.5-43.7 mg/L Cl^- respectively, which are all lower than those required in ＂Integrated Wastewater Discharge Standard＂ （GB8978-1996）. Sediment from stable industrial experiments was analyzed. The result shows that mercury in complexing sediment reaches 29.95% and low concentration of heavy metals in hydrolytic sediment makes it easier to dispose and treat.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2008年第E01期416-421,共6页
The Chinese Journal of Nonferrous Metals
基金
国家科技支撑计划重点资助项目（2007BAC25801）
湖南省重大科技专项目（2006SK1002）
湖南省科技计划重点项目（2007SK2006）
关键词
污酸
生物制剂
配合
水解
acidic wastewater
biologics
complexing
hydrolyzation
