VERFAHREN ZUR KONTINUIERLICHEN MEHRSTUFIGEN ENDREINIGUNG KOHLEHALTIGER ABWAESSER

The invention relates to a process for the continuous multiple-stage final purification of all coal-containing waste waters using a special thickener to which are fed all coal-containing waste waters of a briquette factory and a polyelectrolytic flocculant and downstream of which is provided a solid...

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Bibliographic Details
Main Authors PETERMANN,FALK,DD, FROEMLING,ULRICH,DD, MUNICK,HEINZ,DD, LEHMANN,WOLFGANG,DD, SCHOENHERR,DIETER,DD
Format Patent
LanguageGerman
Published 25.03.1987
Edition4
Subjects
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:The invention relates to a process for the continuous multiple-stage final purification of all coal-containing waste waters using a special thickener to which are fed all coal-containing waste waters of a briquette factory and a polyelectrolytic flocculant and downstream of which is provided a solid/liquid separator. For this purpose, the rates fed to the special thickener and taken off from it are determined, the feed of flocculants being controlled in dependence on the coal-containing waste waters fed and the feed of the coal-containing waste waters depending on the slurry measured in the special thickener, while the clarified water taken off from the special thickener flows to the process water collection vessel.
Bibliography:Application Number: DD19850283989