Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/895
Title: Purifying residual water contg. organic substances by adding urea and formaldehyde, sepg. the resin by filtration or sedimentation and purifying the water biologically after neutralising
Other Titles: Procedeu de epurare a apelor reziduale cu mare incarcare in substante organice
Authors: Parmac, Sorin
Buliga, A.
Chiru, Epsica
Dumitrescu, Emil
Costov, Ioan
Cruceru, Mihail
Varlam, C.
Pristavu, N.
Keywords: Wastewater treatment
Organic compounds
Issue Date: 28-Jun-1985
Abstract: Residual waters contg. organic substances, expressed as CCOOr 15000-50000 mg/l, are treated, at 40-80 deg.C, with 0.15-1 mol urea and 0.15-1 mol HCHO. The urea HCHO ratio is 1:1 to 1:2. The resin formed is sepd. by filtration or sedimentation. The treated water is neutralized at pH 0.2-0.5 and then purified biologically.
Description: Patent Assignee Name(s) and Code(s): INST EPURAREA APELO
URI: http://hdl.handle.net/123456789/895
Appears in Collections:Patents

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