超声-Fenton法协同处理生化后制药废水研究

Study on Advanced Treatment of Biochemicaled Pharmaceutical Wastewater by Fenton Oxidation Cooperated with ultrasound

研究在酸性环境下,超声协同Fenton技术对废水有机物的去除,同时考察p H、H2O2浓度、Fe2+浓度、超声功率和反应时间等因素对降解生化后发酵制药废水的影响。结果表明:Fenton试剂辅以超声作用后,CODCr去除效果优于单独超声、单独Fenton法;同时确定了超声-Fenton氧化法降解生化后发酵制药废水最佳工艺参数:在超声波功率为75 W、溶液p H为4.0、H2O2浓度为4.70 mmol/L,Fe2+浓度为6.50 mmol/L,反应时间为30 min条件下,CODCr最高去除率可达到71.5%,色度去除率可达到97%。

The removal efficiency of organic in wastewater by ultrasonic synergy of Fenton technology was investigated in acidic conditions. At the same time the influence of pH, the Concentration of H2O2 and Fe^2＋, ultrasonic power and the reaction time ultrasonic power on the ultrasound-Fenton reagent degrading pharmaceutical wastewater were also investigated. The experimental results showed that the removal efficiency of CODcr after combined Fenton reagent with ultrasonic is superior to only using Fenton reagent and ultrasonic. The best process parameters of ultrasound-Fenton reagent degrading pharmaceutical wastewater were found. When the Ultrasonic power in 70 w, pH value in 4.0, the Concentration of H2O2 and Fe^2＋ in 4.70 mmol/L and 6.50 mmol/L, and the reaction time in 30 min, The maximize removal rate of CODcr and chromaticity met 71.5 % and 97 %, respectively.