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Title: Recovering coagulant from treating residual waters by dissolving hydroxide formed, residual and unused acid, adding and formaldehyde, washing aminoplast and reusing water
Other Titles: Procedeu de recuperare a coagulantilor utilizati la tratarea apelor reziduale cu continut de coloranti
Authors: Parmac, Sorin
Buliga, A.
Cruceru, Mihail
Dumitrescu, Emil
Costov, Ioan
Ghiorghiu, G.
Keywords: Recovery
Issue Date: 30-Aug-1985
Abstract: The hydroxides formed during coagulation in residual acidic waters, residual acids or unused acids are dissolved. Urea and HCHO are added to the resulting soln. heated to 40 deg.C. The aminoplast formed is washed. The washing waters obtd., together with those resulting from the condensation reaction of the resin, are used in the coagulation of the residual waters.
Description: Patent Assignee Name(s) and Code(s): INST EPURAREA APELO
Appears in Collections:Patents

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