TREATMENT OF SEWAGE SLUDGE

PURPOSE:To perform economical melting treatment, in conditioning sludge, by electrolyzing the sludge using an iron material electrode or an insoluble metal electrode as an anode. CONSTITUTION:In a sludge treatment method conditioning and dehydrating sludge generated in a sewage treatment plant and i...

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Bibliographic Details
Main Authors KAMEYAMA HIDEAKI, TOJO KENZO, FUJITA KUNIO
Format Patent
LanguageEnglish
Published 10.12.1991
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PURPOSE:To perform economical melting treatment, in conditioning sludge, by electrolyzing the sludge using an iron material electrode or an insoluble metal electrode as an anode. CONSTITUTION:In a sludge treatment method conditioning and dehydrating sludge generated in a sewage treatment plant and incinerating the dehydrated sludge to subject the same to melting treatment or immediately subjecting the dehydrated sludge to melting treatment, the sludge is electrolized using an iron material electrode or an insoluble metal electrode as an anode or subjected to electrolytic treatment by using the insoluble electrode in the first half and by using the iron material electrode in the latter half. Or, iron chloride, aluminum chloride, iron sulfate and aluminum sulfate are added to the sludge after conditioning as metal salts to electrolize the sludge under a condition of pH 2-7.
Bibliography:Application Number: JP19900078448