Kesikli biyoreaktörde evsel atıksu arıtımının ASM1 modeli ile simülasyonu ve performans değerlendirmesi

Year 2025, Volume: 2 Issue: 2, 43 - 53, 25.12.2025

Salih Kurçin , Ahmet Uygur

Abstract

Makalede, simüle edilmiş evsel nitelikli atık suyun kesikli bir biyoreaktörde arıtımına ilişkin olarak, organik madde (KOİ), azot bileşenleri (TN, TKN, NH₄⁺-N), toplam askıda katı madde (TSS) ile kullanım hızları parametreleri (OUR, COUR, NOUR vb.) üzerindeki zamana bağlı değişimler incelenmiştir. Arıtma prosesi yalnızca aerobik fazdan oluşmakta olup, simülasyon çalışmaları Aktif Çamur Modeli No.1 (ASM1) esas alınarak gerçekleştirilmiş ve modelleme için Polymath Plus simülasyon yazılımı kullanılmıştır. Simülasyon süresince reaktördeki hidrolik kalış süresi sabit tutulmuş, KOİ/N/P oranı (100/6,99/1,46) ve VSS/TSS oranı (0,80) olacak şekilde hazırlanması sağlanmıştır. Başlangıç KOİ konsantrasyonu 597 mg/L olarak belirlenmiş ve farklı simülasyon sürelerinin arıtım performansı üzerindeki etkileri değerlendirilmiştir. Elde edilen bulgular, simülasyon süresinin artmasıyla birlikte KOİ, TN, TKN, NH₄⁺-N ve TSS giderim yüzdelerinde artış sağlandığını ve çıkış suyu kalitesinin iyileştiğini göstermiştir. En yüksek giderim verimleri yaklaşık 12,9 saatlik simülasyon süresinde elde edilmiş olup, KOİ %71,55, TN %14,72, TKN %70,75, NH₄⁺-N %99,95 ve TSS %33,72 olarak hesaplanmıştır. Bu sonuçlar, kesikli biyoreaktörlerin evsel atık su arıtımında etkili bir işletme stratejisi sunduğunu ve ASM1 modeli ile yapılan simülasyonların sistem performansının değerlendirilmesinde başarılı bir araç olduğunu ortaya koymaktadır.

Keywords

Matematiksel modelleme , Organik madde giderimi , Biyoreaktör , Polymath Plus , Nitrifikasyon

Simulation and performance evaluation of domestic wastewater treatment in batch bioreactor with ASM1 model

Abstract

In this paper, the time-dependent changes in organic matter (COD), nitrogen components (TN, TKN, NH₄⁺-N), total suspended solids (TSS) and utilisation rate parameters (OUR, COUR, NOUR, etc.) for the treatment of simulated domestic wastewater in a batch bioreactor are investigated. The treatment process consists of aerobic phase only and simulation studies were carried out based on Activated Sludge Model No.1 (ASM1) and Polymath Plus simulation software was used for modelling. During the simulation period, the hydraulic residence time in the reactor was kept constant and the COD/N/P ratio (100/6.99/1.46) and VSS/TSS ratio (0.80) were maintained. The initial COD concentration was set as 597 mg/L and the effects of different simulation times on the treatment performance were evaluated. The results showed that the removal percentages of COD, TN, TKN, NH₄⁺-N and TSS increased and effluent quality improved with increasing simulation time. The highest removal efficiencies were obtained at a simulation time of approximately 12.9 hours and calculated as COD 71.55%, TN 14.72%, TKN 70.75%, NH₄⁺-N 99.95% and TSS 33.72%. These results show that batch bioreactors offer an effective operation strategy for domestic wastewater treatment and simulations with the ASM1 model are a successful tool for evaluating system performance.

Keywords

Mathematical modelling , Organic matter removal , Bioreactor , Polymath Plus , Nitrification

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