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ECOLIB DIGITAL REPOSITORY is the institutional repository of National Research and Development Institute for Industrial Ecology ECOIND.
ECOLIB ensures preservation and management of documents and provides access to: articles of the ECOIND researchers published in national and international journals (full-paper/abstract), doctoral theses (abstract), conference and workshop papers, short description of the projects developed from 2006 till present, Proceedings of the International Symposium - Environment and Industry. The digital documents submitted in ECOLIB are indexed in Google Scholar.
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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 |
Files in This Item:
| File | Description | Size | Format | Existing users please |
|---|---|---|---|---|
| Documentatie RO86669A.pdf | 22.79 kB | Adobe PDF | Request a copy | |
| RO86669A.pdf | 93.74 kB | Adobe PDF | Request a copy |
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