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Removing Aquatic Humus From Norwegian Lakes
Author(s) -
Vik Eilen A.,
Carlson Dale A.,
Eikum Arild S.,
Gjessing Egil T.
Publication year - 1985
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.1551-8833.1985.tb05509.x
Subject(s) - humus , alum , coagulation , chemistry , environmental chemistry , dissolved organic carbon , total organic carbon , pulp and paper industry , water treatment , environmental engineering , environmental science , soil water , soil science , organic chemistry , psychology , engineering , psychiatry
Research was conducted to clarify the mechanism of removal of aquatic humus by coagulation with aluminum and to determine the optimum coagulant dosage and pH for maximum removal of humus. In all cases a pH of 5.5 was the optimum for efficient coagulation. Water sources with the greatest amount of low‐molecular‐weight organics were shown to have the highest coagulant demand and the lowest removal of total organic carbon. When sufficient alum was added for maximum removal of humus at the optimum pH, residual aluminum was minimized.