摘要
采用三氯化铁作为混凝剂,通过变化投加量和pH,考察各个分子质量区间的DOC和UV254的变化情况,了解强化混凝去除有机物的效果和机理。增加混凝剂的投加量能有效地促进各分子质量区间的UV254的去除,但对DOC的去除效果较差。三氯化铁对小分子质量的有机物具有很好的去除效果,总去除率的至少50%为去除小分子质量有机物所贡献。降低pH能有效地促进各分子质量区间的DOC和UV254的去除,去除有机物的最佳pH为5.5。在最佳的pH下,小分子质量的有机物得到了最大限度的去除。
Ferric chloride is u sed as a coagulant in this study.With varying dosage of coagulant and pH,the variation of DOC and UV 254 in every molecular weight region have been investigated to understand the e fficiency and mechanism of removing organics by enhanced coagulation.Increased dosage can remove UV 254 more effective-ly than DOC for every molecular weight region.Smaller than 1k molecular weight of organics is removed effec-tively by ferric chloride,w hich account for at least50%of overall rate of removal.Decreased pH can rem ove bo-th DOC and UV 254 effectively.Optimal pH for the removal of organics is5.5,at which small molecular weight or-ganics is removed to a great extent.
出处
《工业水处理》
CAS
CSCD
2003年第9期41-43,共3页
Industrial Water Treatment
