Activated sludge systems: this is the most common form of treatment, where micro-organisms are added to the wastewater and organic decomposition is encouraged through aeration and agitation.
激活的污泥处理系统：这是最普通的处理形势，把有机微生物加入废水中，通过通风发生有机分解。
So far the common methods used to increase DOC in fermentation medium are aeration and agitation.
增大通气量和增加搅拌功率能改善溶氧，但会增加发酵生产的能耗成本。
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