APPARATUS FOR REMOVING PHOSPHORIC ESTER IN WASTE OIL AND TREATMENT SYSTEM OF WASTE OIL CONTAINING PCB

摘要

PROBLEM TO BE SOLVED: To provide an apparatus for removing a phosphoric ester in waste oil and a treatment system of waste oil containing PCB.

SOLUTION: This apparatus includes: a delivery tank 14 which delivers a predetermined amount of waste oil 13 including a phosphoric ester 12; a mixing tank 18 equipped with a stirring means 17 which mixes an alkali agent 16 from an alkali agent delivery tank 15 with the waste oil 13 delivered from the delivery tank 14 through a line L2; an analysis part 22 which analyzes phosphorus (P) or phosphoric acid (H3PO4) in the reaction liquid 19 in which the alkali agent 16 is mixed with the waste oil 13; a circulation line L4which returns the reaction liquid 19 to the mixing tank 18; a stationary tank 25 which allows still standing of the reaction liquid 19 according to the result from the analysis part 22 and separates an oil layer 23 from a water layer 24; a filter 26 which removes a solid content in the oil layer 23; a storage tank 28 which stores treated waste oil 27 which was subjected to removal treatment of the phosphoric ester 12 after passed through the filter 26; and a waste water treatment part 29 which removes phosphoric acid in the water layer 24.

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