Evaluation of nitrogen removal by step feeding in large treatment plants

E. Görgün*, N. Artan, D. Orhon, S. Sözen

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45 Atıf (Scopus)

Özet

Step feeding flow configuration is an attractive process alternative for large treatment systems designed for nitrogen removal, eliminating the need for internal recycling and optimizing organic carbon utilization for denitrification. Volume ratios of anoxic and aerobic volumes and wastewater fraction to be diverted from the inlet of the system are important parameters to be considered in the design of the step feeding process. Wastewater characterization and especially C/N ratio significantly affect the design. The effect of wastewater characterization is illustrated for the Riva Plant in Istanbul, with a capacity of 4 million population equivalent, designed as a two-stage step feeding system for biological nutrient removal. It is shown that the proposed design cannot meet the effluent standard of 10 mgl-1 total N for the relevant sewage characterization assessed on the basis of an extensive experimental study, totally different from the one adopted for design.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)253-260
Sayfa sayısı8
DergiWater Science and Technology
Hacim34
Basın numarası1-2 -2 pt 1
DOI'lar
Yayın durumuYayınlandı - 1996
EtkinlikProceedings of the 1996 18th Biennial Conference of the International Association on Water Quality. Part 1 - Singapore, Singapore
Süre: 23 Haz 199628 Haz 1996

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