Process for the purification of sewage while recapturing the fatty and albuminous matter in reusable form

摘要: There is disclosed a process for the purification of sewage containing fatty and albuminous matter. Raw sewage, which optionally subjected to primary settling in tank, adjusted so that pH approximately same as isoelectric point main components proteins present sewage. The then mixed with an aqueous solution substituted anionic starch precipitate matter by flocculation. Following short dwell time period, expansion flotation under dispersion pressure 4.5-6 bar. sludge separated clarified effluent obtained. sterilized treatment ultraviolet radiation passed waste.