芬顿-絮凝联合处理高浓度有机物海水的试验研究

为了使盐场晒盐池海水能用于海水淡化,针对有机物浓度较高的盐池海水进行了芬顿-絮凝联合预处理试验。选取聚丙烯酰胺(PAM)作为絮凝剂,考察Fe SO4·7H2O和H2O2用量、芬顿反应条件和絮凝剂用量等参数对CODMn和浊度去除效果的影响。结果表明,在氧化阶段p H值为4,Fe SO4·7H2O投加量为125 mg/L,H2O2投加量为50 mg/L,反应时间为60 min,PAM投加量为1 mg/L,海水CODMn和浊度去除率分别为59.6%和96.2%,均较单独采用传统絮凝技术有较大提高。

Experimental study on treatment of high concentration organic seawater by Fenton-flocculation combined process

In order to use seawater from drying pond of salt field as source water for desalination, salt field seawater contains high concentration of organic matters was pretreated by Fenton-flocculation combined process. Choosing polyacrylamide(PAM) as the flocculant, the influence of FeSO4?7H2O and H2O2 dosage, Fenton reaction condition, flocculant dosage and some other parameters on CODMn and turbidity removal was investigated. The re-sults showed that, in oxidation phase, when the pH value was 4, the dosage of FeSO4?7H2O and H2O2 were 125 and 50 mg/L respectively, the reaction time was 60 min, the PAM dosage was 1 mg/L, the removal rates of CODMn and turbidity were 59.6% and 96.2% respectively, which indicated that, the said combined process could obtain much better seawater treatment effect compared to single traditional flocculation technology.