AWWA JAW48534
Journal AWWA - Dynamic Analysis of Coagulation With Alum and PACl
Journal Article by American Water Works Association , 10/01/1998
Matsui, Yoshihiko;Yuasa, Akira;Furuya, Yuji;Kamei, Tasuku
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The coagulation kinetics of polyaluminum chloride (PACl) and alum applied to kaolin clay suspensions were compared in batch experiments. Increasing aluminum (Al) dosages reduced the time required for particles destabilization and increased the rate at which the number of primary particles decreased. PACl worked faster than alum. Photometric dispersion analysis showed that increasing Al Dosages decreased the time required for floc to form. Again, this rate was faster with PACl than with alum. Increasing the Al dosage accelerated the flocculation rate because it increased collision-attachment efficiency and increased particulate volume. Further results are discussed. Includes 28 references, tables, figures.
