Effect of number of step-feed on nitrogen removal performance in anoxic-aerobic sequencing batch reactor

Year 2022, Volume: 11 Issue: 3, 545 - 549, 18.07.2022

Engin Gürtekin

https://doi.org/10.28948/ngumuh.1084986

Abstract

In this study, the effect of step-feed number on the nitrogen removal performance of anoxic-aerobic sequencing batch reactor was investigated. Two, three and four step-feeds were chosen as the number of feeds, each of which was run in different reactors (R1, R2 and R3) respectively. The number of step-feeds did not affect COD removal efficiency. The NH4+-N removal efficiencies in R1, R2 and R3 are 95%, 97% and 91%, respectively. The total inorganic nitrogen (TIN) removal efficiency was found to be 84%, 88% and 85% in R1, R2 and R3, respectively. In terms of nitrogen removal efficiency, better results were obtained with three step-feed, and it was found that the number of step-feed was an important operating parameter for nitrogen removal.

Keywords

Sequencing batch reactor, Denitrification, Step-feed.

Anoksik-aerobik ardışık kesikli reaktörde azot giderme performansına kademeli besleme sayısının etkisi

Abstract

Bu çalışmada, anoksik-aerobik ardışık kesikli reaktörde azot giderme performansına kademeli besleme sayısının etkisi araştırılmıştır. Kademeli besleme sayısı olarak; iki, üç ve dört seçilmiş ve her biri sırasıyla farklı reaktörlerde (R1, R2 ve R3) çalışılmıştır. Kademeli besleme sayısı, KOİ giderme verimini etkilememiştir. R1, R2 ve R3’de NH4+-N giderme verimleri sırasıyla %95, %97 ve %91’dir. Toplam inorganik azot (TIN) giderme verimi R1, R2 ve R3’de sırasıyla %84, %88 ve %85 olarak bulunmuştur. Azot giderme verimi bakımından üç kademeli besleme ile daha iyi sonuçlar elde edilmiş ve kademeli besleme sayısının azot gideriminde önemli bir işletme parametresi olduğu bulunmuştur.

Keywords

Ardışık kesikli reaktör, denitrifikasyon, kademeli besleme

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