Physical and chemical characteristics of waste activated sludge treated ultrasonically

IF 3.8 3区 工程技术 Q3 ENERGY & FUELS
Xin Feng , Hengyi Lei , Jinchuan Deng , Qiang Yu , Hualiang Li
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引用次数: 139

Abstract

This study investigates the physical–chemical characteristics of sludge treated with controlled levels of ultrasound. The results indicate that the energy used for sonication strongly influences the physical–chemical characteristics of sludge. Based on turbidity and settling velocity measurements, 1000 kJ/kg total solids (TSs) is recommended as an optimal specific energy input for improving sludge settling. For purposes of sludge disintegration, applying higher specific energies to the sludge is more efficient than applying lower levels. Nevertheless, a single, optimal energy level for thoroughly disintegrating sludge could not be determined. Possible mechanisms of ultrasonic treatment are also discussed.

超声处理废活性污泥的理化特性研究
本研究探讨了控制超声水平处理污泥的物理化学特性。结果表明,超声能量对污泥的理化特性影响较大。根据浊度和沉降速度测量,推荐1000 kJ/kg总固体(TSs)作为改善污泥沉降的最佳比能输入。为了污泥分解的目的,对污泥施加较高的比能比施加较低的比能更有效。然而,一个单一的,最优的能量水平彻底分解污泥不能确定。讨论了超声处理的可能机理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.80
自引率
9.30%
发文量
408
审稿时长
49 days
期刊介绍: Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.
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