排水中からフェノールを除去する膜分離技術

抄録

Waste water from phenolic resin process contains 50, 000-100, 000 mg/l phenol and little amount of several substances. Pervaporation offers good possibility to compete against conventional technologies, like biological water treatment and solvent extraction, for the removal of phenol from the waste water.
It has clear advantage as phenol is continuously and selectively removed from the feed solution, in contrast to competing technologies where huge amount of water and energy are consumed.
From the tests for removal of phenol from waste water in phenolic resin process using PEBA membrane, it was observed that phenol concentration was reduced from 50, 000 mg/l to 300mg/l, after which the retentate can be treated directly with biological water treatment plant.