公开(公告)号：JPS52113566A

公开(公告)日：1977-09-22

申请号：JP2982576

申请日：1976-03-22

Applicant: TORAY INDUSTRIES

Inventor： AYA TOSHIHIKO ,  SASAGAWA KOUJI ,  IZUMI ZENJI ,  YAMAMOTO KIYOSHI

IPC: C02F3/30 ,  F23G7/00

Abstract: PURPOSE:A specific amount of Ca content is allowed to react with a flocculated active sludge containing Fe and/or Al in specified amounts and formed by the treatment of organic industrial or living waste water, during baking of the sludge, so as to recover the P contents of the sludge as a water-soluble phosphoric acid content.

公开(公告)号：JPS52113565A

公开(公告)日：1977-09-22

申请号：JP2982476

申请日：1976-03-22

Applicant: TORAY INDUSTRIES

Inventor： AYA TOSHIHIKO ,  SASAGAWA KOUJI ,  IZUMI ZENJI ,  YAMAMOTO KIYOSHI

IPC: C02F11/00 ,  F23G7/00

Abstract: PURPOSE:A specific amount of an alkali component is allowed to react with a flocculated active sludge formed by treatment or organic industrial or living waste water and containing Ca and/or Al in amounts not exceeding specified amounts, before (during or after) baking of the sludge in order to recover a phosphorous content in the waste water as water-soluble phosphates.