博文
Pretreatment of cyclohexanone manufacturing wastewater
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Pretreatment of cyclohexanone manufacturing wastewater
by iron-carbon micro-electrolysis
Dongwei Li1，2，﹡，Binquan Jiao1，2,Xiaoman He1
1College of Resource and Environmental Science，Chongqing University，Chongqing 400044, P.R.China，2 The Key Laboratory of the Exploitation of Southwest Resources & the Environmental Hazards Control Engineering，Ministry of Education，Chongqing 400044,P.R.China
Abstract：On the base of iron-carbon micro-electrolysis treatment technology, an important cyclohexanone manufacturing wastewater pretreatment technology was presented. The chemical oxygen demand (COD) of the wastewater is 30000~40000mg/L, the chromaticity is 500~1024 times and the initial pH is 2~4.The three factors, iron-carbon quality ratio, the initial pH of inflow and reaction time, were investigated through experiments. The optimal qualification of solution of iron-carbon micro-electrolysis and removal efficiency of COD were determined. The experimental results show that the removal rate of COD can reach 55.35% for the wastewater at optimal pH of 2~3 after 4 hours pretreatment with air release. Pretreatment can improve the biochemistry availability of the wastewater. As shown in the gas chromatography of outflow, pretreatment can split organic molecules into simpler ones.
Keywords: cyclohexanone manufacturing wastewater；iron-carbon micro-electrolysis ；COD removal
RESEARCH JOURNAL OF CHEMISTRY AND ENVIRONMENT
卷: 14 期: 3 页: 32-35 出版年: SEP 2010
https://blog.sciencenet.cn/blog-341648-395835.html
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