Simultaneous ammonium and nitrate removal by a modified intermittently aerated sequencing batch reactor (SBR) with multiple filling events

• Autorzy: Hajsardar M. , Borghei S. M. , Hassani A. H. , Takdastan A.

Identyfikatory

DOI

10.1515/pjct-2016-0051

• Języki publikacji: EN

Abstrakty

EN

Optimized methods for simultaneous removal of nitrate, nitrite and ammonium are important features of nutrient removal. Nitrogen removal efficiency in an intermittently aerated sequencing batch reactor (IA-SBR) with multiple filling events was studied. No external carbon source was added and three filling events were considered. Oxidationreduction potential (ORP) and pH curve at solids retention time (SRT) of 20 d were analyzed. Effects of three organic loading rates (OLR), 0.67, 1.0 and 1.5 kgCOD/m³d, and three nitrogen loading rates (NLR), 0.054, 0.1 and 0.15 kgN/m³d, on nitrogen removal were studied. Nitrate Apex in pH curve and Nitrate Knee in ORP profile indicated that the end of denitrification would be achieved sooner. The kinetic coefficients of endogenous decay (kd) and yield (Y) were identified to evaluate heterotrophic specific denitrification rate (SDNRb). In period 2 at NLR of 0.054 kgN/m³d and considering 2 anoxic and 3 aerobic phases, nitrogen removal efficiency was 91.43%.

Słowa kluczowe

EN

denitrification; intermittent aeration; filling event; oxidation-reduction potential; sequencing batch reactor

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2016
• Tom: Vol. 18, nr 3
• Strony: 72--80
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Hajsardar M.

• Islamic Azad University, Department of Environmental Engineering, Science and Research Branch, Tehran, Iran, Postal code: 1477893855

autor

Borghei S. M.

• Sharif University of Technology, Department of Chemical and Petroleum Engineering, Tehran, Iran, Postal code: 11365/8639

autor

Hassani A. H.

• Islamic Azad University, Department of Environmental Engineering, Science and Research Branch, Tehran, Iran, Postal code: 1477893855

autor

Takdastan A.

• Ahvaz Jundishapur University of Medical Sciences, Environmental Technologies Research Center, Ahvaz, Iran, Postal code: 6135715794

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.