Treatment and disposal of wastewaters containing carbon black an

Details Treatment and disposal of wastewaters containing carbon black an Treatment and disposal of wastewaters containing carbon black an

1986-08-08

1988-03-01

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210727, 210738, 210768, 210751, 210912, C02F 154

Patent

active

047284374

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.

REFERENCES:
patent: 3408293 (1968-10-01), Dajani
patent: 4211646 (1980-07-01), Westbrook et al.
patent: 4402834 (1983-09-01), Bastgen et al.
patent: 4500324 (1985-02-01), Vuong

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