电还原技术处理六价铬废水的研究  

Study on the Treatment of Hexavalent Chromium Wastewater by Electroreduction Technology

作　　者：刘艳 张旭 Liu Yan;Zhang Xu(Sinochem Environmental Technology Engineering Co.,Ltd.,Shenyang 110021,China)

机构地区：[1]中化环境科技工程有限公司,辽宁沈阳110021

出　　处：《皮革制作与环保科技》2023年第2期16-18,共3页Leather Manufacture and Environmental Technology

摘　　要：通过电还原方法,可以将Cr(Ⅵ)还原为Cr(Ⅲ),达到去除铬的目的,能够满足《电镀污染物排放标准》(GB 21900-2008)[1]中表3要求值,且可以稳定排放;使用复合极板中的可溶性铁进行电还原反应时,初始pH值、电流密度、反应时间等参数对Cr(Ⅵ)去除具有较大影响,通过反应器的设计优化可提高电流利用率,降低能耗。电还原技术处理六价铬废水绿色清洁,为电镀行业实现零排的适用技术。Cr(Ⅵ) can be reduced to Cr (Ⅲ) by over-electric reduction method, and the removal of Cr (Ⅵ) can meet the requirements of Table 3 in GB 21900-2008, and the emission of Cr (Ⅲ) is stable, the parameters of initial pH, current density and reaction time have great influence on Cr(VI) removal. The current utilization efficiency can be improved and the energy consumption can be reduced by optimizing the reactor design. The green and clean treatment of hexavalent chromium wastewater by electroreduction technology is a suitable technology to realize zero discharge in electroplating industry.

关 键 词：六价铬 电还原 电镀废水 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]