混凝沉淀-Fenton氧化法在垃圾渗滤液生化处理出水中的研究

摘要

Using coaguolation sedimentation-Fenton oxidation process to treat biochemical effluent of land-fill leachate, the factors that influencing CODCr removal were studied through single factor test. The results of the test showed that, the optimal condition for coagulation test was as follows: the ratio of n(inorganic component) to n (organic component) was 4.0 : 1, the pH value was 8.5, the coagulant dosage was 0.6 g/L, the removal rate of CODCr could reach 88.6%. In the process of Fenton oxidation, when the system pH value was 4.0, the dosage of H2O2 and FeSO4·7H2O were 16 mg/L and 6 g/L respectively, the reaction time was 110 min, the removal rate of CODCr reached 95.9%.%采用混凝沉淀-Fenton氧化处理垃圾渗滤液生化处理出水,通过单因素试验研究了混凝沉淀和Fenton氧化中各因素对去除CODCr的影响,试验结果表明,最佳混凝试验工艺条件为:复合混凝剂比例n(无机组分):n(有机组分)为4.0:1、pH值为8.5、 混凝剂投加量0.6 g/L,CODCr的去除率可达到88.6%.Fenton氧化阶段,当体系pH值为4.0、H2O2投加量为16 mg/L、FeSO4·7H2O投加量为6 g/L、 反应时间为110 min时,CODCr去除率高达95.9%.