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Title: | Treating residual acidic waters from chemical fertiliser industry with phosphorus and opt. phospho-gypsum by use as reagent and creation of high calcium carbonate content | Other Titles: | Procedeu pentru tratarea apelor reziduale acide rezultate din combinatele de ingrasaminte cu fosfor | Authors: | Cruceru, Mihail Coroiu, Cornel Parmac, Sorin Dumitrescu, Emil Costov, Ioan |
Keywords: | Wastewater treatment;Chemical fertilizer;Phosphor compounds | Issue Date: | 30-Oct-1984 | Abstract: | Residual acidic waters, obtd. in the chemical fertilizer industry with P, from the prodn. of H2SO4, H3PO4, superphosphate, AlF3, etc., contaminated with H2SO4, H3PO4, H2SiF6, HF etc., with or without phospho-gypsym, transported hydraulically, are treated by their use as treatment reagent. A high content, e.g. 85-95%, of CaCO3 is formed, either as a powder having granulation below 3 mm or as a sludge contg. 5-65% chalk dust having granulation below 3 mm and 95-35% fresh water, treated and recirculated water, sea-water or directly, residual acidic waters sepd. from phospho-gypsum, as such as or in any mixt. |
Description: | Patent Assignee Name(s) and Code(s): INST EPURAREA APELO |
URI: | http://hdl.handle.net/123456789/887 | ISSN: | Patent no. RO 85112-A |
Appears in Collections: | Patents |
Files in This Item:
File | Description | Size | Format | Existing users please |
---|---|---|---|---|
Documentatie RO85112A.pdf | 26.95 kB | Adobe PDF | Request a copy | |
~RO85112A.pdf | 90.79 kB | Adobe PDF | Request a copy |
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