摘要
K2Cr2O7在酸性条件下有强氧化性,能被一些价格低廉的还原性物质还原,如毒性强、危害大的Cr(Ⅵ)还原为毒性小、危害小的Cr(Ⅲ),并转化为三价铬氢氧化物沉淀。依据国家标准进行浸出毒性实验,浸出液符合国家标准,稳定化处理后可进行安全填埋。
Potassiumdichromate having strong oxidizing property under acidic condition, can be reduced by many low- cost reducible substances, strong toxicity and great harmful Cr（ VI ） is reduced to low toxicity and little harmful Cr（ Ⅲ ）, and converted into Cr（ m ） hydroxid. Based on national standards, experiments of leaching toxicity were carried out, and the Cr（ VI ） ion concentration of the lixivium was less than national standards. After stabilizing treatment, secure landfill was performed.
出处
《安徽化工》
CAS
2012年第3期53-56,共4页
Anhui Chemical Industry
关键词
含铬废渣
Cr(Ⅵ)
还原处理
安全填埋
chromium slag
Cr（ VI ）
reduction of processing
secure landfill
