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首页> 外文期刊>Chemical engineering journal >Screening pretreatment methods for sludge disintegration to selectively reclaim carbon source from surplus activated sludge
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Screening pretreatment methods for sludge disintegration to selectively reclaim carbon source from surplus activated sludge

机译：筛选污泥分解的预处理方法以选择性地从剩余的活性污泥中回收碳源

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Four pretreatment methods, including alkaline, chlorine dioxide, ultrasound, and homogenization, were screened for sludge disintegration to selectively release carbon from surplus activated sludge (SAS), while avoiding nutrient (phosphorus and nitrogen) release. The characteristics of these methods in terms of carbon, nitrogen, and phosphorus releases were compared, and the variation between the actual and theoretical values of those releases was evaluated. The results showed that the four pretreatment methods had different preferences in both carbon and nutrient release, indicating a possibility of selective release. Ultrasound had a preference in carbon release while not in nutrient release, and was a good method for selective release of carbon source. But homogenization was chosen for sludge disintegration to obtain carbon source from SAS with a cost consideration. And alkaline and chlorine dioxide pretreatment methods were not advocated for a low selective release of carbon source and a gas emission into environment.
机译：筛选了四种预处理方法，包括碱，二氧化氯，超声和均质化，以进行污泥分解，以选择性地从过剩的活性污泥（SAS）中释放碳，同时避免了养分（磷和氮）的释放。比较了这些方法在碳，氮和磷释放方面的特性，并评估了这些释放的实际值与理论值之间的差异。结果表明，四种预处理方法在碳和养分释放方面都有不同的偏好，表明有选择性释放的可能性。超声波在碳释放方面具有优先权，而在营养释放方面则优先，并且是选择性释放碳源的良好方法。但是选择均质化污泥进行分解以从SAS获得碳源，但要考虑成本。而且，不提倡碱性和二氧化氯预处理方法来降低碳源的选择性释放和向环境中排放气体。

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