%A Bin MA, Shuying WANG, Guibing ZHU, Shijian GE, Junmin WANG, Nanqi Ren, Yongzhen PENG %T Denitrification and phosphorus uptake by DPAOs using nitrite as an electron acceptor by step-feed strategies %0 Journal Article %D 2013 %J Front. Environ. Sci. Eng. %J Frontiers of Environmental Science & Engineering %@ 2095-2201 %R 10.1007/s11783-012-0439-2 %P 267-272 %V 7 %N 2 %U {https://journal.hep.com.cn/fese/EN/10.1007/s11783-012-0439-2 %8 2013-04-01 %X
Denitrifying phosphorus accumulating organisms (DPAOs) using nitrite as an electron acceptor can reduce more energy. However, nitrite has been reported to have an inhibition on denitrifying phosphorus removal. In this study, the step-feed strategy was proposed to achieve low nitrite concentration, which can avoid or relieve nitrite inhibition. The results showed that denitrification rate, phosphorus uptake rate and the ratio of the phosphorus uptaken to nitrite denitrified (anoxic P/N ratio) increased when the nitrite concentration was 15 mg·L-1 after step-feeding nitrite. The maximum denitrification rate and phosphorus uptake rate was 12.73 mg