【摘要】 研究了微电解-Fenton工艺对难降解染料工业废水预处理效果,在提高染料废水可生化的同时实现有机物去除.通过对提高废水可生化性和有机物去除率因素的优选,确定了工艺的最佳技术参数和操作条件.结果表明:当pH=2,Fe/GAC体积比为1,反应时间60 min;H2O2采用连续投加方式,投加量为0.4%,pH=3,反应时间为30 min的条件下,可使废水的BOD5/COD质量浓度比由0.08提高到0.46,有机物(COD)去除率达75%以上.微电解-Fenton工艺能够有效改善难降解染料废水的可生化性和实现有机物的去除,并且操作简单,运行稳定,适宜于该废水的预处理.更多还原

【Abstract】 To improve the biodegradability and achieve a high organic removal rate,the pretreatment performance of refractory dyeing wastewater with the micro-electrolysis-Fenton process was investigated.Comparative experiments were carried out and it was determined that the micro-electrolysis-Fenton process was superior to traditional processes in terms of treatment effect.Optimal conditions were obtained by changing experimental conditions which could improve the biodegradability and increase the organic removal rate.The results show that under optimal conditions pH = 2,the volume ratio of Fe/GAC is 1 and the reaction time is 60 min.The dosage of H2O2 is 0.4% by continuously dosing,its pH is 3 and the reaction time 30 min.The BOD5/COD ratio can be increased from 0.08 to 0.46 and the reduction in COD is greater than 75%.The micro-electrolysis-Fenton process is highly efficient in improving the biodegradability and removing organic material,simple to operate,stable in performance and suitable for pretreatment of refractory dyeing wastewater.更多还原