曝气微电解-Fenton氧化处理制药废水实验研究

Study on the Pharmaceutical Wastewater by Aeration Micro-Electrolysis and Fenton Oxidation

通过曝气微电解-Fenton氧化对制药废水进行了实验研究。研究表明,曝气微电解-Fenton氧化法的最佳工况条件为:铁炭质量比为1∶1、进水pH为2.5～3.0、曝气微电解反应时间为60 min、H2O2投加量为5 mL/L、Fenton氧化反应时间为90 min。在此反应条件下,整个曝气微电解-Fenton氧化-混凝沉淀过程CODCr去除率为93.2%～95.9%,出水各项指标可达到《污水综合排放标准》(GB8978-1996)中一级标准。

Aeration micro-electrolysis and Fenton oxidation was used in pharmaceutical wastewater treatment.The results showed that,for the aeration micro-electrolysis and Fenton oxidation process,the optimal condition was：the weight ratio of iron to carbon was 1∶1,the pH value was 2.5～3.0,the aeration micro-electrolysis reaction time was 60 min,the H2O2 dosage was 5.0 mL/L,the Fenton oxidation reaction time was 90 min.Under the above conditions,the total removal rate of CODCr reached 93.2 %～95.9 %.The result shows that the effluent quality meets I-class criteria specified in the Integrated Wastewater Discharge Standard（GB 8978-1996）.