含硫氰酸根废液综合利用及无害化处置技术路线研究  

Study on Comprehensive Utilization and Harmless Disposal Technology of Thiocyanate Wastewater

作　　者：周钦灵 冯凡让 王武雄 吴志峰 Zhou Qinling;Feng Fanrang;Wang Wuxiong;Wu Zhifeng(Shenzhen Environmental Protection Technology Group Co.,Ltd.,Shenzhen 518049,China)

机构地区：[1]深圳市环保科技集团有限公司,广东深圳518049

出　　处：《广东化工》2021年第11期90-91,130,共3页Guangdong Chemical Industry

摘　　要：利用硫酸铜、亚硫酸钠与硫氰酸根据合成反应生成硫氰酸亚铜工艺,对硫氰酸钾废液进行无害化处置。实验结果表明,利用合成生成硫氰酸亚铜,可以对硫氰酸钾废液中的硫氰酸根进行回收利用,硫氰酸根的去除率达99%以上,合成后的滤液经过漂水氧化后用D403树脂进行离子交换去除铜、芬顿氧化去除COD处理后,铜离子浓度低于0.5 mg·L^(-1),COD浓度为213 mg·L^(-1),达到《污水综合排放标准》GB8978-1996三级标准。The waste liquid of potassium thiocyanate was treated innocuously by the process of producing cuprous thiocyanate fromcopper sulfate, sodium sulfite and thiocyanate. The experimental results show that the thiocyanate in the waste liquid can be recovered and reused by the synthesis ofcuprous thiocyanate, and the removal rate ofthiocyanate is more than 99 %. After bleachingwater oxidation, the synthetic filter liquid istreated with D403 resin for ion exchange to remove copper and Fenton oxidation to remove COD. After treatment, Cu2+ concentration is less than 0.5 mg·L-1, and the COD concentration is 213 mg·L-1, which can meet the third grade standard of integrated wastewater discharge standard(GB8978-1996).

关 键 词：硫氰酸根 硫氰酸亚铜 漂水氧化 离子交换 芬顿氧化 

分 类 号：TQ[化学工程]