METHOD FOR PREVENTING ODOR GENERATION OF DEHYDRATED CAKE

PROBLEM TO BE SOLVED: To provide a method and a device for preventing odor generation of a dehydrated cake which eliminate residual nitrite due to addition of excessive amount of nitrite and solve cost problems when nitrite is added to eliminate odor, and are applicable to prompt dehydration.SOLUTIO...

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Bibliographische Detailangaben
Hauptverfasser:	IGARASHI MASAKATSU, YASUNAGA TOSHIYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HUMAN NECESSITIES HUNTING METALLURGY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method and a device for preventing odor generation of a dehydrated cake which eliminate residual nitrite due to addition of excessive amount of nitrite and solve cost problems when nitrite is added to eliminate odor, and are applicable to prompt dehydration.SOLUTION: In the method of obtaining the dehydrated cake 11, nitrite is added to sludge slurry 1, and a polymer flocculant 7 is added and mixed to be mechanically dehydrated. The amount of the nitrite to be added is set within a range indicated by the following formula (1): 0.1