Effect of Different Ratios of Acetic Acid to Propionic Acid on Nitrogen Removal Performance in Anoxic-Aerobic Sequencing Batch Reactor

Year 2017, Volume: 8 Issue: 2, 135 - 141, 11.09.2017

Engin Gürtekin

Abstract

In this study, the effect of different ratios
acetic acid to propionic acid on nitrogen removal performance in anoxic-aerobic
sequencing batch reactor was investigated. COD and NH₄⁺-N
removal were almost complete at all acetic acid/propionic acid ratios and were
not affected by the acetic acid / propionic acid ratio. However, NO₃^--N
removal decreased with decrease in acetic acid/propionic acid ratios. Consequently;
the total inorganic nitrogen (TIN) removal efficiencies in R1, R2, R3, R4 and
R5 were 55%, 52%, 49%, 45% and 43%, respectively. Experimental results show
that higher nitrogen removal efficiency is obtained with acetic acid and that
the nitrogen removal efficiency decreases as the propionic acid ratio increases
in the carbon source.

Keywords

Sequencing batch reactor, nitrogen removal, acetic acid, propionic acid, denitrification

Anoksik-aerobik Ardışık Kesikli Reaktörde Azot Giderme Performansına Farklı Asetik Asit/Propiyonik Asit Oranlarının Etkisi

Abstract

Bu çalışmada, anoksik-aerobik ardışık kesikli
reaktörde azot giderme performansına farklı asetik asit/propiyonik asit
oranlarının etkisi araştırılmıştır. KOİ ve NH₄⁺-N
giderimi tüm asetik asit/propiyonik asit oranlarında hemen hemen tamamlanmış
olup, asetik asit/propiyonik asit oranından etkilenmemiştir. Ancak, NO₃^--N
giderimi asetik asit/propiyonik asit oranı azaldıkça azalmıştır. Buna bağlı
olarak; R1, R2, R3, R4 ve R5’de toplam inorganik azot (TIN) giderme verimleri
sırasıyla % 55, %52, % 49, % 45 ve % 43 olarak bulunmuştur. Deneysel sonuçlar,
asetik asit ile daha yüksek azot giderme verimi elde edildiğini ve karbon
kaynağında propiyonik asit oranı arttıkça azot giderme veriminin azaldığını
göstermiştir.

Keywords

Ardışık kesikli reaktör, azot giderimi, asetik asit, propiyonik asit, denitrifikasyon

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