A study on nitrogen removal by submerged biofilm attaching on fibrous carriers in A/0 process was carried out, with the emphasis put on finding out the optimal conditions for nitrification and denitrification with highest nitrogen removal. The influence of return flow ratio of nitrified effluent on the removal capacities of the system for organic substances and nitrogen was studied as well.

Submerged biofilm, Fibrous carriers, Return flow ratio, Nitrification/denitrification, Domestic sewage
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© IWA Publishing 1992
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