内电解接触氧化还原法对制药废水预处理研究

Study on Pharmacy Wastewater Pretreatment of Enhanced Internal Electrolysis by Aeration Oxidation and Deoxidation

用内电解法对某制药废水进行预处理研究。通过曝气和投加一定量的氧化剂可以增强内电解处理效果,结果表明,在Fe/C比为1:1, pH值为3.0,H2O2(30%)投加量为500mg/L,反应时间为3小时的情况下,该法对CODCr去除率可达70%,色度去除率为90%,并大为提高废水的可生化性,可以生化处理。

The pretreatment of internal electrolysis to a certain pharmaceution wastewater was investigated ,and the effect of internal electrolysis was enhanced by aeration and adding oxidant.The result showed that removal rates of CODCr could reach more than 70%, removalrate of color was 90% if the weight proportion of iron and charcoal was 1:1, pH 3.0, react time 3 hours and the dosage of oxidant 500mg/L, and then the wastewater could become degradable for biochemical treatment.