Hydantoin-enhanced halogen efficacy in pulp and paper applications

摘要: Free halogen sources (e.g., sodium hypochlorite and chlorine) added as slimicides in high organic component process streams such pulp paper processing are rendered more efficacious by the addition of selected N-hydrogen compounds (namely, 5,5-dimethylhydantoin, 5-ethyl-5-methylhydantoin, cyanuric acid, succinimide, urea, 4,4-dimethyl-2-oxazolidinone, glycouril) to stream. The latter may be stream before or after slimicide is combined with directly thereto. direct use halogenated hydantoins has also been found provide improved efficacy relative free sources. In addition, absorbable by-products reduced.