Title:
WATER TREATMENT USING FERRATE
Document Type and Number:
WIPO Patent Application WO2003050043
Kind Code:
A3
Abstract:
A formulation for use in the treatment of water and wastewater to remove impurities and harmful micro-organisms comprises a ferrate [Fe(VI)] ion combined with at least one chemical species, preferably a polymerised aluminium species. The ferrate and polymerised aluminium may be combined in a molar ratio ferrate (as Fe) to Al of between 1:2 and 1:4. The composite chemical enables treatment to be carried out at close to neutral pH, typically in the range 6.0 to 8.0, with lower doses compared to the use of ferrate ion alone. In this way, the coagulating/disinfecting properties can be optimised for water treatment.
Inventors:
JIANG JIAQIAN (GB)
Application Number:
PCT/GB2002/005663
Publication Date:
August 14, 2003
Filing Date:
December 13, 2002
Export Citation:
Assignee:
UNIV SURREY (GB)
JIANG JIAQIAN (GB)
JIANG JIAQIAN (GB)
International Classes:
A01N59/16; C02F1/50; C02F1/52; C02F1/56; C02F1/72; (IPC1-7): C02F1/72; C02F1/50; C02F1/52
Foreign References:
| US5284642A | 1994-02-08 | |||
| US6267896B1 | 2001-07-31 | |||
| US5380443A | 1995-01-10 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 012, no. 438 (C - 544) 17 November 1988 (1988-11-17)
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