PROCESS FOR UTILIZING SOLIDE WASTE MATERIALS PRODUCED WITH PURIFYING WASTE WATER OF CATECHIN-PRODUCTION FOR TANNING HIDE

摘要

Industrial wastes contg. derivs. of polyoxyflourenes or aq. extracts of these are brought into contact in a tanning bath with leather prepared for tanning or on occasions with leather partially tanned in one or more steps. - The residual liquor is sometimes employed in further detoxification but is pref. subjected to conventional tannery effluent treatment used on occasions when solid waste materials are also present.