微电解-絮凝-UASB-SBR处理高浓度氯离子味精废水

Treatment of High-Concentration Chloride Ion Monosodium Glutamate Wastewater by Micro-electrolysis Flocculation-UASB-SBR Technique

采用微电解-絮凝-UASB-SBR处理高浓度氯离子味精废水.运行结果表明:在进水COD的质量浓度为3 000 mg/L,氯离子的质量浓度高达4 000 mg/L时,出水水质能稳定达到味精工业污染物排放标准(GB19431-2004).采用微电解-絮凝组合能有效降低后续生化处理的负荷,提高废水的可生化性;上流式厌氧生物反应器(UASB)经过3个月的启动,能够稳定处理高氯离子味精废水,有效去除率达70%以上;序批式活性污泥法(SBR)采用间歇曝气方式,有效抑制了污泥膨胀,并能有效去除COD.

The micro-electrolysis-flocculation-UASB-SBR technique was adopted to treat high-concentration chloride ion monosodium glutamate wastewater.The results indicated that when the influent concentrations of COD and Cl-were 3000 and 4000 mg/L,respectively,the effluent concentrations of COD and Cl-could meet the discharge standard of pollutants for monosodium glutamate industry（GB19431-2004）.The load of subsequent biochemical treatment was reduced and biodegradability of the wastewater was improved by use of the micro-electrolysis-flocculation technique.After three months of start-up,UASB could treat high-concentration chloride ion monosodium glutamate wastewater steadily and its effective removal rate was more than 70%.SBR with the intermittent aeration mode was an effective method to inhibit sludge bulking and to remove COD.