Study On Treatment With Promoted Oxidation Processes For Contaminated Raw Water

As drinking water resource pollution to be seriously day by day, the study on treatment technology for contaminated raw water to change extremely importantly. This thesis experimental study on treatment effect and its influencing factor for contaminated raw water by H₂O₂/catalyst, O₃/catalyst, O₃/H₂O₂ these three kinds of advanced oxidation processes. The results show that:The pretreatment process of H₂O₂/catalyst had better treatment effect for contaminated raw water compare with the conventional treatment process. Under the condition of that: H₂O₂ dose 10¹5mg/L, hydration MnO₂ dose 0.6¹.0mg/L, PAC dose 10mg/L. The removal efficiency of TOC, UV254 and turbidity are promoted 10%, 15%, 30% respectively, compare with conventional treatment process.The treatment effect for contaminated raw water with process of O₃/catalyst influenced by O₃ dosage, catalyst and its dosage, reaction time, pH value of raw water, [TOC] of raw water and the add way of ozone. The recommended process parameters is: [O₃]/[TOC] is about 1.2, hydration MnO₂ dose is 1.0mg/L, the reaction time is about 10min, pH value is neutrality, ozone added by several times. The removal efficiency of TOC and UV254 are promoted 5%, 15% respectively, compare with O₃ oxidation.The recommended parameters of the process of O₃/H₂O₂ as follow shows: [OT]/[TOC] is 1.0¹.5, K [H₂O₂] [O₃] is about 0.5, the reaction time is 10 min, pH value is neutrality, ozone added by several times. the process of O₃/H₂O₂ not only promoted the removal efficiency of organic matter of raw water, but more economical compare with O₃ oxidation.