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  • Title: Influence of primary sedimentation on pre-denitrification system performances.
    Author: Esposito G, Bastianutti C, Bortone G, Pirozzi F, Sgroi S.
    Journal: Water Sci Technol; 2001; 44(1):113-20. PubMed ID: 11496661.
    Abstract:
    The effects of suppressing primary sedimentation on nitrogen removal efficiency of a pre-denitrification system have been evaluated for a large municipal wastewater treatment plant. Simulations have been carried out using the STOAT model. For both the process schemes with and without primary sedimentation, nitrification efficiencies are calculated for increasing influent loads of COD, total N and suspended solids. The sensitivity analysis shows that for the usual carbon to nitrogen ratios in the raw influent both the process schemes allow the requested removal efficiencies, whereas for significantly high C/N ratios the scheme with primary sedimentation is preferable.
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