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Filetrability Techniques for Improving Water Clarification
Author(s) -
Shull Kenneth E.
Publication year - 1967
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1967.tb03503.x
Subject(s) - alum , zeta potential , aluminium sulfate , filter (signal processing) , point (geometry) , sulfate , water treatment , process engineering , environmental engineering , computer science , chemistry , pulp and paper industry , environmental science , mathematics , engineering , flocculation , chemical engineering , electrical engineering , organic chemistry , nanoparticle , geometry
The Philadelphia Suburban Water Company developed a method for regulating the dosage of a coagulant to obtain a zeta potential (ZP) at the optimal point of ‐5 mv. The coagulant used was aluminum sulfate, or filter alum. This article discusses this method, which until recently was followed at Philadelphia but with only limited success. The article also presents a new method for determining equivalent stirring time that departs somewhat from that used to determine the coagulant dosage for ‐5 mv ZP.