| 硫酸盐废水生物处理产生的硫化物处理含Pb2+、Zn2+的钢丝酸洗废水 |
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| 引用本文： | 柳迪,方迪,武攀峰,张瑞昌.硫酸盐废水生物处理产生的硫化物处理含Pb2+、Zn2+的钢丝酸洗废水[J].环境化学,2012,31(5):687-691. |
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| 作者姓名： | 柳迪 方迪 武攀峰 张瑞昌 |
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| 作者单位： | 1. 中国海洋大学环境科学与工程学院,青岛,266100
2. 南通市环境监测中心站,南通,226006 |
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| 基金项目： | 国家自然科学基金项目，国际科学基金项目，南通市社会发展科技计划项目 |
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| 摘 要： | 在一套小型搅拌反应器中,研究了碱沉淀(KOH,处理a)、碱沉淀及硫酸盐废水厌氧处理产生的硫化物出水混合(KOH+出水混合,处理b)、碱沉淀及N2吹脱硫酸盐废水厌氧处理产生的硫化物(KOH+N2吹脱,处理c),以及碱沉淀、硫酸盐废水厌氧处理产生的硫化物出水混合和N2吹脱硫化物联合(KOH+出水混合+N2吹脱,处理d)等4组处理方式对含Zn2+、Pb2+的钢丝绳酸洗废水处理效果的影响.废水pH值为0.7,Zn2+和Pb2+含量分别为450和3274 mg.L-1.结果表明,KOH+出水混合+N2吹脱的处理方式对废水有较好的处理效果,Zn2+和Pb2+的去除为氢氧化物、硫化物沉淀的共同作用结果,处理后,废水中Zn2+和Pb2+的去除率均达99.6%以上,满足污水综合排放标准(GB 8978—1996).
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| 关 键 词： | 钢丝绳废水 重金属 沉淀 生物硫化物 |
Treatment of Pb2+,Zn2+-laden acidic wire rope wastewater using sulfide from microbial sulfate reduction effluent |
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| LIU Di,FANG Di,WU Panfeng,ZHANG Ruichang.Treatment of Pb2+,Zn2+-laden acidic wire rope wastewater using sulfide from microbial sulfate reduction effluent[J].Environmental Chemistry,2012,31(5):687-691. |
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| Authors: | LIU Di FANG Di WU Panfeng ZHANG Ruichang |
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| Institution: | 1 (1.School of Environmental Science and Engineering,Ocean University of China,Qingdao,266100,China; 2.Nantong Municipal Environmental Monitoring Center Station,Nantong,226006,China) |
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| Abstract: | Four alternatives for heavy metals removal(Zn2+,Pb2+ and Fe2+) in wire rope wastewater were evaluated in a bench scale mixing reactor,which were KOH neutralization(run a),KOH neutralization and sulfide-rich anaerobic effluent treatment(run b),KOH neutralization and sulfide precipitation by N2(run c),KOH neutralization and sulfide-rich anaerobic effluent and N2 sparging treatment(run d).The pH of the raw wire rope wastewater was 0.7,and the concentration of Zn2+ and Pb2+ were 450 and 3274 mg·L-1,respectively.It was found that the best precipitation results were obtained in run d in which the removal rates of Zn and Pb reached above 99.6%,due to the co-precipitation of hydroxide and sulfide.The treated wastewater meets the effluent discharge standard(GB 8978—1996). |
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| Keywords: | wire rope wastewater heavy metals precipitation biogenic sulfide |
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