ABSTRACT The activated sludge process is commonly used to treat wastewater by aerobic oxidation of organic pollutants into carbon dioxide and water. However, several nonoxidative mechanisms can also contribute to removal of organics. Sorption onto activated sludge can remove a large fraction of the colloidal and particulate wastewater organics. Intracellular storage of, e.g., polyhydroxyalkanoates (PHA), triacylglycerides (TAG), or wax esters can convert wastewater organics into precursors for high-value products. Recently, several environmental, economic, and technological drivers have stimulated research on nonoxidative removal of organics for wastewater treatment. In this paper, we review these nonoxidative removal mechanisms as well as the existing and emerging process configurations that make use of them for wastewater treatment. Better utilization of nonoxidative processes in activated sludge could reduce the wasteful aerobic oxidation of organic compounds and lead to more resource-efficient wastewater treatment plants.

中文翻译：

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活性污泥法中有机物的非氧化去除

摘要 活性污泥法通常用于通过有机污染物有氧氧化成二氧化碳和水来处理废水。然而，一些非氧化机制也有助于去除有机物。吸附到活性污泥上可以去除大部分胶体和颗粒废水有机物。例如，聚羟基链烷酸酯 (PHA)、甘油三酯 (TAG) 或蜡酯的细胞内储存可以将废水有机物转化为高价值产品的前体。最近，一些环境、经济和技术驱动因素刺激了对用于废水处理的有机物非氧化去除的研究。在本文中，我们回顾了这些非氧化去除机制以及利用它们进行废水处理的现有和新兴工艺配置。