Flocculant, filter, and waste liquid treating method

Abstract

A flocculant for treating a processing waste liquid is provided, in which processing debris generated by processing are mixed in pure water supplied at a time of processing by a processing apparatus, into fresh water, and the flocculant is formed by pulverizing an ion exchange resin for purifying fresh water into pure water to a size of 100 μm or below.

What is claimed is: 
     
         1 . A flocculant for treating a processing waste liquid, in which processing debris generated by processing are mixed in pure water supplied at a time of processing by a processing apparatus, into fresh water,
 wherein the flocculant is formed by pulverizing an ion exchange resin for purifying fresh water into pure water to a size of 100 μm or below.   
     
     
         2 . A filter for subjecting a processing waste liquid to filtration and ion exchange to purify the processing waste liquid into pure water, the filter formed by alternatively stacking:
 a mixed layer for filtration of the processing waste liquid, the mixed layer formed by mixing a flocculant obtained by pulverizing an ion exchange resin for purifying fresh water into pure water to a size of 100 μm or below into an ion exchange resin; and   an ion exchange resin layer purifying the fresh water filtered by the mixed layer into pure water.   
     
     
         3 . The filter according to  claim 2 , wherein the mixed layer is formed by packing with the flocculant in such a manner that a content of the flocculant gradually increases from an inflow side toward an outflow side of the processing waste liquid.