微电解/Fenton法深度处理土霉素废水的研究

采用微电解/Fenton法对土霉素废水二级出水进行深度处理。正交和单因素试验结果表明,微电解法的最佳工艺条件:Fe投量为125 g/L、铁炭质量比为1.5∶1、初始pH值为4.0、反应时间为2 h,在进水COD为361～395 mg/L的条件下,处理后出水COD可降至198～207 mg/L,对COD的去除率可达44%以上;采用Fenton法进一步处理微电解出水,其最佳工艺条件:H2O2(浓度为30%)投加量为2 mL/L、初始pH值为3.0、反应时间为60 min,处理后出水COD<120 mg/L,组合工艺对COD的总去除率达到70%以上,满足《发酵类制药工业水污染物排放标准》(GB21903—2008)的要求。

Advanced Treatment of Oxytetracycline Wastewater Using Microelectrolysis and Fenton Method

Advanced treatment experiments for secondary effluent of oxytetracycline wastewater were studied by micro-electrolysis and Fenton method.The results of orthogonal experiments and single factor experiments showed that the optimum conditions of micro-electrolysis method were as follows: the dosage of Fe was 125 g/L,the mass ratio of Fe to C was 1.5 ∶ 1,the initial pH was 4.0,and the reaction time was 2 h.The concentration of COD was reduced from 361-395 mg/L to 198-207 mg/L,and the removal rate was above 44%.The optimum conditions of Fenton method for treating the micro-electrolysis effluent were as follows: the dosage of 30% H2O2 was 2 mL/L,the initial pH was 3.0,and the reaction time was 60 min.The concentration of COD in the final effluent was less than 120 mg/L,and the total removal rate was more than 70%.The final effluent met the Discharge Standards of Water Pollutants for Pharmaceutical Industry—Fermentation Products Category(GB 21903-2008).