主流脱氨在一体式固定膜活性污泥反应器中的性能评价和基于模型的优化。
Performance evaluation and model-based optimization of the mainstream deammonification in an integrated fixed-film activated sludge reactor.
机构信息
Department of Urban Water- and Waste Management, University of Duisburg-Essen, Universitätsstraße 15, 45141, Essen, Germany; Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Ul. Narutowicza 11/12, 80-233, Gdansk, Poland.
Department of Aquatic Environmental Engineering, Institute for Water and River Basin Management, Karlsruhe Institute of Technology (KIT), Gotthard-Franz-Str. 3, Karlsruhe 76131, Germany.
出版信息
Bioresour Technol. 2022 May;351:126942. doi: 10.1016/j.biortech.2022.126942. Epub 2022 Mar 4.
This study aimed to model and optimize mainstream deammonification in an integrated fixed-film activated sludge (IFAS) pilot plant under natural seasonal temperature variations. The effect of gradually decreasing temperature on the performance was evaluated during a winter season and a transition period to summer conditions, and the correlation of the performance parameters was investigated using principal component analysis (PCA). The optimization of intermittent aeration in the long-term (30 days) dynamic conditions with on/off ratio and dissolved oxygen (DO) set-point control was used to maximize the N-removal rate (NRR) and N-removal efficiency (NRE). Optimization results (DO set-point of 0.2-0.25 mgO/L, and on/off ratio of 0.05) increased the NRE and NRR of total inorganic N (daily average) from 30% to > 50% and 15 gN/md to 25 gN/md, respectively. This novel long-term optimization strategy is a powerful tool for enhancing the efficiency in mainstream deammonification.
本研究旨在模拟和优化在自然季节性温度变化下集成固定膜活性污泥（IFAS）中试装置中的主流脱氨作用。在冬季和过渡到夏季条件期间，评估了逐渐降低温度对性能的影响，并使用主成分分析（PCA）研究了性能参数的相关性。使用间歇曝气的长期（30 天）动态条件下的优化（采用开/关比和溶解氧（DO）设定点控制），以最大程度地提高氮去除率（NRR）和氮去除效率（NRE）。优化结果（DO 设定点为 0.2-0.25 mgO/L，开/关比为 0.05）将总无机氮（日平均值）的 NRE 和 NRR 分别从 30%提高到>50%和从 15 gN/md 提高到 25 gN/md。这种新颖的长期优化策略是提高主流脱氨作用效率的有力工具。
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