Process water purification in paper industry, comprises adding cationically modified, amphiphilic polysaccharide having hydrophilic and hydrophobic substituents to sticky-containing process water and removing remote impurity in sticky form

摘要

Method of process water purification in paper industry, comprises adding 0.1-2 mass-% of one or more times cationically modified, amphiphilic polysaccharides with hydrophilic and hydrophobic substituents on the polysaccharide chain to sticky-containing process water and removing remote impurities in the form of stickies.