联萘酚生产废水处理工程实例

联萘酚生产废水是一种含高浓度亚铁离子、氯离子和有机物的强酸性废水,设计采用芬顿催化氧化-蒸发结晶(MVR)-生化处理-H_2O_2催化氧化组合工艺进行处理,废水处理量为0.6 m~3/h。处理后水中COD质量浓度由21 800 mg/L降低为35 mg/L,去除率为99.8%;BOD_5质量浓度由13 800 mg/L降低为7 mg/L,去除率为99.9%;挥发酚质量浓度由85 mg/L降低为0.1 mg/L,去除率为99.9%;氯离子质量浓度由12 200 mg/L降低为165 mg/L,去除率为98.6%;亚铁离子质量浓度由5 300 mg/L降低为0.2 mg/L,去除率为99.9%。出水各项指标均满足SL 368—2006《再生水水质标准》中的洗涤用水标准。

A project example of treatment of wastewater from binaphthol production

As wastewater from binaphthol production is a kind of strong acidity wastewater with high concentrations of ferrous ions,chloride ions and organic matters,a combined process of Fenton catalytic oxidation-evaporative crystallization(MVR)-biochemical treatment-H2O2 catalytic oxidation was adopted for its treatment,and the treatment scale was 0.6 m3/h.Through the treatment,the mass concentrations of COD,BOD5,volatile phenol,chloride ions and ferrous ions decreased from 21800,13800,85,12200 and 5300 mg/L respectively to 35,7,0.1,165 and 0.2 mg/L respectively,the removal rates were 99.8%,99.9%,99.9%,98.6%and 99.9%respectively.All the above indicators of the treated effluent water met the requirement of washing water standard in SL 368—2006 Reclaimed water quality standard.