Laboratory Studies on Nitrogen and Phosphorus Removal from Wastewater by Iron Electrolysis

Nitrogen and phosphorus removal from swine wastewater by iron electrolysis is studied. The aim is to examine the effect of R sub(ac) i.e.the current ratio of iron anode to iron cathode on the treatment of nitrogen, and phosphorus and on chemical oxygen demand (COD), using the resultant supernatant o...

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Bibliographic Details
Published in:Environmental technology 2007-05, Vol.28 (5), p.521-521
Main Authors: Ikematsl, M, Kaneda, K, Takaoka, D, Yasuda, M
Format: Article
Language:English
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Summary:Nitrogen and phosphorus removal from swine wastewater by iron electrolysis is studied. The aim is to examine the effect of R sub(ac) i.e.the current ratio of iron anode to iron cathode on the treatment of nitrogen, and phosphorus and on chemical oxygen demand (COD), using the resultant supernatant of centrifugal solid/liquid separation. Swine wastewater from a pig farm of Japan is screened. The results suggest that the optimum salt concentration for ammonia-nitrogen is 250 mM. Nitrogen is removed to below 60 mg/l in a 3-h treatment when the R sub(ac) is 75% greater and in a 4-h treatment when R sub(ac) is 25% or greater. On the other hand phosphorus is removed in 3-h to below 8 mg/l.
ISSN:0959-3330