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- W2334202411 abstract "Nitrogen discharges in progressively increasing quantities promote eutrophication inthe closing area of the sea. In the last few years the great efforts have been made to increase in efficiency biological treatment process. Nitrogen reduction can be accomplished by biological nitrification and denitrification. But the biological nitrification is a problematic process, because the growth rate of nitrifying bacteria is very low. Consequently, economical treatment techniques are needed to meet demands for ammonia nitrogen control.In this paper, we used the polysulphone hollow fiber (pore size of 0.1μm) as the support materials. The nitrification bacteria were immobilized on the surface of the hollow fiber through the medium of polyvinyl alcohol. Thesefibers of 300 pieces were modulated and used for nitrifying bioreactor. The synthetic wastewater was introduced through the outer surface and the oxygen needed for nitrification was delivered to the hollow fiber's inner side. Thenitrification rate and efficiency of this reactor were evaluated for one year. The denitrification bacteria were also immobilized on the surface of the hollow fiber. The reduction of the nitrate in the synthetic wastewater to nitrogen was investigatedby the denitrification reactor. We showed that the hollow fiber biofilm reactor was effective in denitrification of nitrate." @default.
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- W2334202411 date "2001-01-01" @default.
- W2334202411 modified "2023-09-25" @default.
- W2334202411 title "Nitrogen removal by a hollow fiber biofilm reactor" @default.
- W2334202411 doi "https://doi.org/10.2208/proge.9.273" @default.
- W2334202411 hasPublicationYear "2001" @default.
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