Dolatshah Mina, Asadi Azar, Gholami Foad, Nazari Safoora
Department of Applied Chemistry, Faculty of Chemistry, Razi University, P.O. Box 67144-14971, Kermanshah, Iran.
Department of Applied Chemistry, Faculty of Gas and Petroleum, Yasouj University, Gachsaran 75918-74831, Iran.
Biotechnol Rep (Amst). 2024 Feb 10;41:e00831. doi: 10.1016/j.btre.2024.e00831. eCollection 2024 Mar.
The potential of an integrated fixed film activated sludge (IFAS) bioreactor for developing simultaneous aerobic and anoxic micro-zones under continuous aeration regime to promote carbon and nitrogen removal from Faraman industrial estate wastewater was evaluated in the present research. The effects of three independent variables on carbon and nitrogen removal were assessed. Overall, the optimum condition with 94 %, 77 %, and 2 NTU of COD (chemical oxygen demand) removal, Total nitrogen (TN) removal, and effluent turbidity has been specified with hydraulic retention time (HRT) of 11 h, air flow rate (AFR) of 3.5 L/min, and filling ratio (FR) of 50 %. To assess the stability of treating processes in the system, the IFAS system was operated in this optimal condition. Moreover, the simulation of the bioreactor was accomplished via calibration and verification of GPS-X model. GPSX simulation results and experimental data were compared using an independent sample T-test, which the T-test result confirmed that there was no significant difference between them.
本研究评估了一体化固定膜活性污泥（IFAS）生物反应器在连续曝气条件下形成同步好氧和缺氧微区以促进法拉曼工业园区废水碳氮去除的潜力。评估了三个自变量对碳氮去除的影响。总体而言，确定了最佳条件，即化学需氧量（COD）去除率为94%、总氮（TN）去除率为77%、出水浊度为2 NTU，此时水力停留时间（HRT）为11小时、空气流速（AFR）为3.5升/分钟、填充率（FR）为50%。为评估系统中处理过程的稳定性，IFAS系统在该最佳条件下运行。此外，通过对GPS-X模型的校准和验证完成了生物反应器的模拟。使用独立样本T检验比较了GPSX模拟结果和实验数据，T检验结果证实两者之间无显著差异。
