PROCESS FOR TREATING A WASTEWATER STREAM WHICH IS FORMED IN THE WORKUP OF A TRIACETONEAMINE-CONTAINING REACTION MIXTURE

摘要

Treating used aqueous phase, comprises removing first organic components from the aqueous phase by extracting with an extracting agent to obtain a second aqueous phase and an extract, removing second organic components from the second aqueous phase, removing water from the obtained third aqueous phase to obtain a fourth aqueous phase and a separated aqueous phase, removing third organic components from the fourth aqueous phase and bleaching the fourth aqueous phase to obtain a fifth aqueous phase, and adjusting pH of the second-, third-, fourth- and/or fifth aqueous phase using an auxiliary. Treating used aqueous phase, comprises (a) removing first organic components from the aqueous phase by extracting with an extracting agent to obtain a second aqueous phase and an extract comprising the extracting agent, (b) removing second organic components from the second aqueous phase to obtain a third aqueous phase, (c) removing water from the third aqueous phase to obtain a fourth aqueous phase and a separated aqueous phase comprising the water removed from the third aqueous phase, (d) removing third organic components from the fourth aqueous phase and bleaching the fourth aqueous phase to obtain a fifth aqueous phase, and (e) adjusting pH of the second-, third-, fourth- and/or fifth aqueous phase using an auxiliary.