Advanced treatment of swine wastewater by electrodialysis with a tubular ion exchange membrane |
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Authors: | Yasuyuki FUKUMOTO Kiyonori HAGA |
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Institution: | National Institute of Livestock and Grassland Science, Tsukuba-shi, Japan |
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Abstract: | To remove the excess nitrogen and phosphorus in swine wastewater, an electrodialysis technique was applied to an advanced treatment method. The laboratory‐scale swine wastewater treatment system constructed for the present study consisted of an activated sludge process, as the main treatment unit, and electrodialysis, as an advanced treatment unit. This system was operated for 200 days and the processing performance was evaluated. By electrodialysis, approximately 99% of NO3– and PO43– in the activated sludge‐treated water (AT solution) was removed during operation. Furthermore, electrodialysis decreased the color density of the AT solution at a rate of 58%. The advanced treatment of swine wastewater by electrodialysis proved to be an efficient technique to remove excess nitrogen and phosphorus, and decrease color density. |
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Keywords: | color density electrodialysis nitrogen phosphorus swine wastewater |
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