Abstract:
Under laboratory conditions，electro-chemical oxidation and electrolytic flocculation processes used for treating the effluent fermented wastewater have carried through experimentally. Orthogonal experiment has been carried through for investigating the factors which influences the TOC removal rate of electro-chemical oxidation. The optimal parameters are as follows：electrolysis time 5 min, current intensity 6 A, pH＝7, and the distance of electrodes 25 mm. Compared with electrolytic flocculation treatment，the electro-chemical oxidation treatment has better synthetic treatment results. The indexes of TOC,COD, and total phosphate in water can meet the requirements of the Discharge Standard of Pollutants from Zymotic Pharmacy Industry, GB 21903—2008. The total nitrogen has all been converted into inorganic nitrogen.
Key words:
ascorbic acid wastewater,
electrolysis,
advanced treatment,
chromogenic substance
摘要：
在实验室水平下利用电化学氧化和电解絮凝2种方法对发酵废水的外排出水进行了深度处理实验。对影响电化学氧化去除TOC效果的各种因素进行了正交实验,确定了最佳参数:电解时间5 min、电流6 A、pH为7、极板间距25 mm。对比2种电解方法,电化学氧化法的综合处理效果最佳,其出水中TOC、COD、总磷等指标均达到《发酵类制药工业水污染物排放标准》(GB 21903—2008)的排放要求,总氮全部转化为无机氮。
关键词:
维生素C废水,
电解,
深度处理,
发色物质
CLC Number:
Xie Jicheng, Xu Ke, Ding Lili, Ren Hongqiang. Study on advanced treatment of the biological effluent wastewater from ascorbic acid factory by electrolysis process[J]. INDUSTRIAL WATER TREATMENT, 2010, 30(8): 23-26.
谢吉程, 许柯, 丁丽丽, 任洪强. 电解法深度处理维生素C类发酵废水外排水研究[J]. 工业水处理, 2010, 30(8): 23-26.