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公开(公告)号：DE3528598A1
公开(公告)日：1987-02-19
申请号：DE3528598
申请日：1985-08-09
Applicant: BASF AG
Inventor： GETTERT HANS DR , KAEMPFER KNUT DR , SANDER BRUNO DR , MARQUARDT SIEGFRIED , MUELLER K ROBERT DR
Abstract: Wastewaters which contain carbon black and ash and originate from high temperature processes and in which the carbon black is present in a very finely divided state and partially in a colloidal state are treated and disposed of by a process in which the wastewater is treated with calcium carbonate or calcium hydroxide and an organic flocculant and subjected to a two-stage filtration and the resulting filter cake containing carbon black and ash is subjected to an aftertreatment with an aqueous iron salt solution.
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