FOERFARANDE FOER BEHANDLING AV EN HYDROSULFITAVLUT

摘要

1455047 Treating liquors from alkali metal dithionite production MITSUBISHI GAS CHEMICAL CO Inc 9 Aug 1974 [15 Aug 1973] 35230/74 Heading C1C Waste liquor from an alkali metal dithionite production process is treated by first aerating the waste liquor at 30-85‹ C. in the presence of 10-1000 p.p.m. of a metal ion selected from Fe, Mn, Co, Co and Ni ions and then treating the liquor by an activated sludge process.