摘要
进行了生物制剂配合-水解工艺处理锌冶炼烟气洗涤过程中所产含汞污酸的工业试验,考察了均化、生物制剂配合、中和水解等过程中汞及其他重金属离子的脱除,并对各工序产生的渣样进行了分析。结果表明:处理后的污酸含Hg 0.013～0.045 mg/L、Cu 0.010～0.093 mg/L、Pb 0.050～0.95 mg/L、Cd 0.009～0.055 mg/L、Zn 0.017～0.68 mg/L,均低于《污水综合排放标准》(GB8978-1996)的限值;均化渣含Hg28.31%,配合渣含Hg45.08%,可作为炼汞原料;水解渣重金属含量低、稳定性好,便于安全处置。
Industrial experiment of treating acidic wastewater by biologics complex-hydrolysis technology was carried out, acidic wastewater produced in washing zinc smelter off gas. Removing Hg and other heavy metals was researched in a equalizing process, biologics complex process and hydrolytic process. Sediment from the industrial experiment was analyzed, the results show that slag contain Hg 0.013~0.045mg/L, Cu 0.010~0.093mg/L, Pb 0.050~0.95mg/L, Cd 0.0090 ~0.055mg/L, Zn 0.017 -0.68rag/L, which were lower than those required in ＂Integrated Wastewater Discharge Standard＂（GB8978-1996）. Mercury content in equalizing sediment reached 28.31% and in complex sediment reached 45.08%, those sediment can be used as raw material for mercury smelter factory. Low concentration and stabilization of heavy metals in hydrolytic sediment makes it easier to dispose and treat.
出处
《中国有色冶金》
北大核心
2009年第4期59-64,共6页
China Nonferrous Metallurgy
基金
国家科技支撑计划重点项目(No.2007BAC25B01)
关键词
锌冶炼烟气
洗涤
污酸
生物制剂
汞
均化
配合
水解
zinc smelter off gas
wash
acidic wastewater
biologics
mercury
equalizing
complex
hydrolysis
