Referring to municipal wastewater, after a short description of explicit relationships useful for design and verification problems of pre-denitrification and post-denitrification systems, it is effectuated an analysis of the variation of biological phases volumes as function of operating parameters. For pre-denitrification systems it is analysed the result of mixed liquor recycle variations, in the range of admissible values, while for post-denitrification systems it is examined the trend of nitrification and denitrification phases volumes, for different values of either sludge recycle flow or flow by-passing the nitrification tank, considering their upper and lower limits of admissibility. The two systems are compared for similar working conditions, showing the greater suitability of the post-denitrification system, even if it is not always applicable for high requirement of nitrogen compounds removal efficiency.

Flexibility Evaluation of Nitrification-Denitrification Systems

FABBRICINO, MASSIMILIANO;PIROZZI, FRANCESCO
2000

Abstract

Referring to municipal wastewater, after a short description of explicit relationships useful for design and verification problems of pre-denitrification and post-denitrification systems, it is effectuated an analysis of the variation of biological phases volumes as function of operating parameters. For pre-denitrification systems it is analysed the result of mixed liquor recycle variations, in the range of admissible values, while for post-denitrification systems it is examined the trend of nitrification and denitrification phases volumes, for different values of either sludge recycle flow or flow by-passing the nitrification tank, considering their upper and lower limits of admissibility. The two systems are compared for similar working conditions, showing the greater suitability of the post-denitrification system, even if it is not always applicable for high requirement of nitrogen compounds removal efficiency.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/184795
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