深度处理维生素制药废水的中试研究

维生素制药废水经过初步生化处理后,出水水质无法满足要求,具有难降解、COD和氨氮浓度高的特点,针对这些特点,本文采用"强化复合曝气水解酸化→高效厌氧复合反应→流离生物接触氧化"连续工艺深度处理维生素制药废水,研究其可行性。处理规模为7.2 m3/d的中型试验结果表明:强化复合曝气水解酸化能使进水B/C值由0.33提高到0.48,提高下一步生化反应的处理效率,当进水CODCr的浓度为150～641 mg/L,氨氮浓度为6～115 mg/L时,平均去除率分别达到84.28%、93.8%,出水COD浓度小于50mg/L,氨氮浓度小于5 mg/L,出水水质能够达到《城镇污水处理厂污染物排放标准》GB18918-2002中的一级A指标,该连续工艺深度处理此类废水具有可行性和稳定性。

Pilot study on vitamins pharmaceutical wastewater advanced treatment

Vitamins pharmaceutical wastewater was not able to meet the water quality requirements after a preliminary biochemical treatment because of the features with hard-biodegraded,high COD and ammonia nitrogen.According to these characteristics,the paper adopted hydrolysis acidification and aggrandizement with compound aeration→efficient and anaerobic combination reaction→displaced biological contact oxidation continuous process to deal with the wastewater of vitamin pharmaceutical deeply and study its feasibility.The medium-sized test which processing scale was 7.2 m3/d showed that hydrolysis acidification and aggrandizement with compound aeration process can be made B/C value raise from 0.33 to 0.48,improing next step’s biochemical treatment efficiency,when entering water CODcr concentration was 150 to 641 mg/L,ammonia nitrogen was 6 to 115 mg/L,the average removal rate can be achieved 84.28%,93.8% respectively,the effluent water COD concentration can be less than 50 mg/L,ammonia nitrogen concentration can be less than 5 mg/L,achieved the first class of A of the Discharge Standard of Pollutants for Municipal wastewater Treatment Plant(GB18918-2002).Last of all,the continuous process on advanced treatment of such wastewater possess feasibility and stability.