METHOD AND APPARATUS FOR RECOVERING FIBER FROM FLOW OF DISCHARGED LIQUID

摘要

PROBLEM TO BE SOLVED: To provide both a method for recovering a fiber from a drainage flow in high yield and a device therefor. SOLUTION: This method for recovering a fiber useful for paper making from a drainage flow and a device therefor comprise a first treatment for treating the drainage flow and separating a usable fiber from an unnecessary substance and a second treatment for supplementing the first treatment, treating the unnecessary substance removed by the first treatment and recovering a usable fiber contained in the removed substance. In the second treatment, the removed substance is separated into an organic substance and an inorganic substance usable by another treatment. The method does not requires addition of water as an ordinary treatment requires, simplifies handling and waste disposal and can reduce a waste disposal cost.