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针对吗啉生产废水的特点,制定处理工艺路线,通过生化试验和化学氧化试验,研究该工艺对废水COD和氨氮的处理效果,并确定生化各段停留时间及氧化剂投加量等工艺参数,最终开发出一套处理吗啉生产废水的工艺路线。试验结果表明:生化段试验进水COD平均7 725 mg/L,平均出水COD为168 mg/L,COD平均去除率为97.7%;进水氨氮平均浓度489 mg/L,出水氨氮平均浓度为2.3 mg/L,氨氮平均去除率为99.5%。最后经化学氧化处理后,出水COD<60 mg/L,氨氮<5 mg/L,达到GB 8978—1996《污水综合排放标准》一级标准。
According to the characteristics of morpholine wastewater, the treatment route was established. Through the biochemical test and chemical oxidation test, the treatment effect of COD and ammonia nitrogen on wastewater was studied. The process parameters such as residence time of biochemical section and dosage of oxidant were determined. Finally, Development of a process for the treatment of morpholine wastewater. The results showed that the average influent COD was 7 725 mg / L, the average effluent COD was 168 mg / L, the average removal rate of COD was 97.7%, the average influent ammonia concentration was 489 mg / L and the average effluent ammonia concentration was 2.3 mg / L, ammonia nitrogen average removal rate of 99.5%. Finally, after chemical oxidation treatment, effluent COD <60 mg / L, ammonia nitrogen <5 mg / L, reaching a standard of GB 8978-1996 “Integrated Wastewater Discharge Standard”.