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Investigating high-power ultrasonic vibration and vacuum as methods to enhance the extraction of water from municipal wastewater sludge

机译：研究大功率超声振动和真空作为增强从城市废水污泥中提取水的方法

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摘要

The main objective of this thesis is to uncover and investigate physical mechanisms that can be used to develop efficient ways to remove water from municipal wastewater sludge. The essential criterion will be to minimize energy expenditure. For this purpose, the main theories regarding mechanical dewatering and drying, related methods, and normally available dewatering and drying machinery are discussed.Using vacuum to enhance drying and applying high-power ultrasound to enhance dewatering or drying are two areas of particular interest. The potential advantage of vacuum is discussed in brief, and a series of experiments performed to investigate its effect on drying kinetics are described. To introduce high-power ultrasound, some basic theoretical data about vibration translation, standing waves, and air columns in musical instruments are presented. Then, the basic mechanisms and equipment of ultrasonic processing related to water extraction technologies are discussed. Finally, testing was carried out at the Pusonics Co. in Spain to explore the use of ultrasonic waves for dehydration.The investigation and testing show that both vacuum-enhanced drying and high-power ultrasound-enhanced dewatering or drying could be used to develop more effective and more energy efficient ways of removing water from municipal wastewater sludge.
机译：本论文的主要目的是揭示和研究可用于开发有效方法以去除市政废水污泥中水的物理机制。基本标准将是最大程度地减少能源消耗。为此，讨论了有关机械脱水和干燥的主要理论，相关方法以及通常可用的脱水和干燥机械。使用真空增强干燥和应用大功率超声来增强脱水或干燥是两个特别受关注的领域。简要讨论了真空的潜在优势，并描述了一系列研究真空对干燥动力学影响的实验。为了介绍大功率超声，介绍了有关振动平移，驻波和乐器气柱的一些基本理论数据。然后，讨论了与水提取技术有关的超声处理的基本机理和设备。最后，在西班牙的Pusonics Co.进行了测试，以探索超声波在脱水中的用途。调查和测试表明，真空增强干燥和大功率超声增强脱水或干燥均可用于开发更多的水。从市政废水污泥中去除水的有效且更节能的方法。

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    Mobaraki Mojtaba;

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  • 年度 2016
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  • 正文语种 en_US
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