Enhancing wastewater treatment efficiency: A hybrid technology perspective with energy-saving strategies,Bioresource Technology

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Enhancing wastewater treatment efficiency: A hybrid technology perspective with energy-saving strategies
Bioresource Technology ( IF 9.7 ) Pub Date : 2024-03-15 , DOI: 10.1016/j.biortech.2024.130593
Olga Zajac ₁ , Magdalena Zielinska ₂ , Monika Zubrowska-Sudol ₁

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The study aimed to investigate how hybrid technology, combined with various intermittent aeration (IA) strategies, contributes to reducing the energy costs of wastewater treatment while simultaneously ensuring a high treatment efficiency. Even with IA subphases lasting half as long as those without aeration, and oxygen levels reduced from 3.5 to 1.5 mg O/L, pollutants removal efficiency remains robust, allowing for a 1.41-fold reduction in energy consumption (E). Hybrid technology led to a 1.34–fold decrease in E, along with improved denitrification efficiency from 74.05 ± 4.71 to 81.87 ± 2.43 % and enhanced biological phosphorus removal from 35.03 ± 4.25 to 87.32 ± 3.64 %. The high nitrification efficiency may have been attributed to the abundance of , , and , which outcompeted the genera of autotrophic nitrifying bacteria, suggesting that the hybrid system is favorable for the growth of heterotrophic nitrifiers.

中文翻译：

提高废水处理效率：混合技术视角与节能策略

该研究旨在调查混合技术如何与各种间歇曝气（IA）策略相结合，有助于降低废水处理的能源成本，同时确保高处理效率。即使 IA 子阶段的持续时间是不曝气子阶段的一半，并且氧气水平从 3.5 mg O/L 降低至 1.5 mg O/L，污染物去除效率仍然强劲，从而使能源消耗 (E) 减少 1.41 倍。混合技术使 E 降低了 1.34 倍，反硝化效率从 74.05 ± 4.71 提高到 81.87 ± 2.43 %，生物除磷能力从 35.03 ± 4.25 提高到 87.32 ± 3.64 %。高硝化效率可能归因于、和的丰富，它们在竞争中击败了自养硝化细菌，表明该混合系统有利于异养硝化细菌的生长。

更新日期：2024-03-15

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