%0 Journal Article %T On-line optical determination of floc size of Fe(III) coagulants.
On-line optical determination of floc size of Fe(Ⅲ) coagulants %A WANG Yan %A GAO Bao-yu %A YUE Qin-yan %A ZHOU Wei-zhi %A CHU Yong-bao %A
WANG Yan %A GAO Bao-yu %A YUE Qin-yan %A ZHOU Wei-zhi %A CHU Yong-bao %J 环境科学学报(英文版) %D 2005 %I %X This study investigated the floc aggregation, average floc size, floc size variance and floc growth velocity when ferric chloride (FeCl_3) and polyferric chloride (PFC) were used to treat the simulated water samples. The factors including coagulant dose, ionic strength and solution pH, which affect the floc aggregation, were studied. Experiments were carried out in a bench-scale reactor using photometric dispersion analyzer (PDA). Results showed that there were great differences between the floc aggregation of PFC and FeCl_3. The average floc size and floc growth velocity of PFC were much larger than those of FeCl_3. Compared with FeCl_3, PFC gave a better coagulation performance in wider range of pH, dosage and ionic strength. It was also found that the coagulation efficiency of PFC did not depend on average floc size but on floc growth velocity. %K coagulants %K photometric dispersion analyzer(PDA) %K floc aggregation %K water treatment
废水处理 %K 铁 %K 凝结剂 %K 离子浓度 %K PFC %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=6B61B00853A3B52ECDEE92B85817B0D9&yid=2DD7160C83D0ACED&vid=BCA2697F357F2001&iid=B31275AF3241DB2D&sid=9BA5B7BDD4CE0596&eid=F08C87DC7855E316&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=17