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The exploration of potassium ferrate(VI) as a disinfectant/coagulant in water and wastewater treatment.

Jiang, JQ, Wang, S and Panagoulopoulos, A (2006) The exploration of potassium ferrate(VI) as a disinfectant/coagulant in water and wastewater treatment. Chemosphere, 63 (2). pp. 212-219.

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Abstract

This paper aims to explore potassium ferrate(VI) (K2FeO4) as an alternative water treatment chemical for both drinking water and wastewater treatment. The performance of potassium ferrate(VI) was evaluated in comparison with that of sodium hypochlorite (NaOCl) and that of NaOCl plus ferric sulphate (FS) or alum (AS). The dosages of ferrate(VI), NaOCl and FS/AS and sample pH values were varied in order to investigate the effects of these factors on the treatment performance. The study demonstrates that in drinking water treatment, ferrate(VI) can remove 10-20% more UV(254)-abs and DOC than FS for the same dose compared for natural pH range (6 and 8). The THMFP was reduced to less than 100 microg l(-1) by ferrate(VI) at a low dose. In addition to this, ferrate(VI) can achieve the disinfection targets (>6 log10 inactivation of Escherichia coliform (E. coli)) at a very low dose (6 mg l(-1) as Fe) and over wide working pH in comparison with chlorination (10 mg l(-1) as Cl2) plus coagulation (FS, 4 mg l(-1) as Fe). In wastewater treatment, ferrate(VI) can reduce 30% more COD, and kill 3log10 more bacteria compared to AS and FS at a similar or even smaller dose. Also, potassium ferrate(VI) can produce less sludge volume and remove more pollutants, which could make sludge treatment easier.

Item Type: Article
Authors :
NameEmailORCID
Jiang, JQj.jiang@surrey.ac.ukUNSPECIFIED
Wang, SUNSPECIFIEDUNSPECIFIED
Panagoulopoulos, AUNSPECIFIEDUNSPECIFIED
Date : April 2006
Identification Number : https://doi.org/10.1016/j.chemosphere.2005.08.020
Uncontrolled Keywords : Alum Compounds, Benzopyrans, Chlorine, Coagulants, Disinfectants, Disinfection, Escherichia coli, Ferric Compounds, Humic Substances, Hydrogen-Ion Concentration, Iron Compounds, Potassium Compounds, Waste Disposal, Fluid, Water Pollutants, Water Purification
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 11:15
Last Modified : 17 May 2017 11:15
URI: http://epubs.surrey.ac.uk/id/eprint/830638

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