摘要：
对强化混凝去除黄浦江水的有机物进行了试验研究。尽管增加混凝剂投加量和降低 pH都能有效地提高去除有机物的效果, 但降低 pH去除有机物更有效。不同的 pH, 达到最佳有机物去除效果所需的混凝投加量是不同的, pH越低, 所需的投加量就越少。就黄浦江水来说, 达到最佳有机物去除效果的硫酸铝投加量为 8mg/L(以Al计), pH在 5.5, DOC和UV254的去除率可分别达到 46%和57%, 较常规处理方法, 去除率可提高1倍。强化混凝也能有效地去除消毒副产物。
关键词:
强化混凝,
最佳投加量,
最佳pH,
有机物去除率,
消毒副产物
Abstract:
The effect on the removal of organic substance from the Huangpu River water by enhanced coagulation is investigated. Although both of the increase of dosage and the decrease of pH can enhance the removal of organic substance effectively, the decrease of pH can remove organic substance more effectively. The dosage of coagulant required for optimum removal rate is different for different pH value. The lower the pH is, the less dosage is required. For the Huangpu River water, when the dosage 8 mg/L (as Al) and pH 5.5, the optimum removal rates of DOC and UV254 are 46% and 57% respectively, which doubles the removal rates of conventional treatment. Enhanced coagulation can also remove disinfection by products(DBPs)effectively.
Key words:
enhanced coagulation,
optimum dosage,
optimum pH,
removal rate of organic substance,
DBPs
中图分类号:
董秉直, 曹达文, 范瑾初. 最佳混凝投加量和pH去除水中有机物的研究[J]. 工业水处理, 2002, 22(6): 29-31.
DONG Bing zhi, CAO Da wen, FAN Jin chu. Optimum dosage and pH for the removal of organic substance by enhanced coagulation[J]. INDUSTRIAL WATER TREATMENT, 2002, 22(6): 29-31.