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. - STAMPA. - 2:(2000), pp. 65-74. (Intervento presentato al convegno SIDISA 2000 International Symposium on Sanitary and Environmental Engineering tenutosi a Trento (ITALY) nel 18-23 September).
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.