Method for preventing the bulking of activated sludge
AssigneeMitsubishi Monsanto Chemical Company
InventorKiyoharu Fujino
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Abstract
A method for preventing the bulking of activated sludge, which comprises adding to the activated sludge a water-soluble cationic polymer obtained by a reaction of a dialkylamine, ammonia and epichlorohydrin, in an amount of from 0.05 to 25 parts by weight relative to 100 parts by weight of the dried solid content of the activated sludge.
Claims4
A method for preventing the bulking of activated sludge, which comprises adding to the activated sludge a water-soluble cationic polymer having an intrinsic viscosity of at least 0.05 as measured in a 2 M KBr aqueous solution obtained by the reaction of a dialkylamine, ammonia and epichlorohydrin, in an amount of from 0.05 to 25 parts by weight relative to 100 parts by weight of the dried solid content of the activated sludge.
Dependencies are inferred from the claim text.