云南化工2024，Vol.51Issue(7)：64-66,3.DOI:10.3969/j.issn.1004-275X.2024.07.15
降低渗滤液中氰化物的试验研究
Experimental Study on Reducing Cyanide in Leachate
钟琦 1张千帆 2李行德1
作者信息
- 1. 云南大地丰源环保有限公司,云南 昆明 650401||云南大地绿坤环保科技有限公司,云南 昆明 650401
- 2. 云南大地丰源环保有限公司,云南 昆明 650401
- 折叠
摘要
Abstract
The highest total cyanide in leachate from landfill site of a hazardous waste treatment center in Yunnan Province was 9.72 mg/L.The pH value is 6.23.In order to make the secondary waste generated by the hazardous waste center can be treated with low cost and high efficiency,the cyanide can be reduced to the national sewage discharge standard GB8578-1996.The process of chemical precipitation was studied.The re-sult shows that,sulfuric acid was added to300 g leachate to adjust the pH value to2-3,then add ferrous sulfate1%(wt%)and polyferric sul-fate 0.33%(wt%),to adjust the pH at 5-6,and add 0.3%(wt%)polyaluminum chloride and a small amount of 0.1%polyacrylamide solu-tion as flocculant.The cyanide in the leachate can be reduced to 0.5 mg/L of cyanide as stipulated in the national sewage discharge standard GB5978-1996.The cyanide removal rate was about 98.48%.关键词
渗滤液/氰化物/铁盐沉淀法/氧化法Key words
Percolate/Cyanide/Iron Salt Precipitation Method/Oxidation Method分类
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钟琦,张千帆,李行德..降低渗滤液中氰化物的试验研究[J].云南化工,2024,51(7):64-66,3.
