Abstract：
Sludge is an inevitable waste product of sewage treatment with a high water content and large volume, it poses a significant threat of secondary pollution to both water and the atmosphere without proper disposal. In this regard, dewatering has emerged as an attractive method in sludge treatment, as it can reduce the sludge volume, enhance its transportability and calorific value, and even decrease the production of landfill leachate. In recent years, physical conditioning methods including non-chemical conditioners or energy input alone, have been extensively researched for their potential to enhance sludge dewatering efficiency, such as thermal treatment, freeze-thaw, microwave, ultrasonic, skeleton builders addition, and electro-dewatering, as well as combined methods. The main objective of this paper is to comprehensively evaluate the dewatering capacity of various physical conditioning methods, and identify key factors affecting sludge dewatering efficiency. In addition, future research anticipated directions and outlooks are proposed. This work is expected to provide valuable insights for developing efficient, eco-friendly, and low-energy consumption techniques for deep sludge dewatering.
摘要：
污泥是污水处理过程中不可避免的废品,含水率高,体积大,如果没有适当的处置，它对水和大气都构成了二次污染的重大威胁。在这方面,脱水已成为污泥处理中一种有吸引力的方法，因为它可以减少污泥体积，提高其可运输性和热值，甚至减少垃圾渗滤液的产生。近年来,物理调理方法，包括非化学调理剂或单独的能量输入，对其提高污泥脱水效率的潜力进行了广泛的研究，如热处理，冻融,微波炉,超声波,骨架建设者添加，和电脱水，以及组合方法。本文的主要目的是综合评价各种物理调理方法的脱水能力,找出影响污泥脱水效率的关键因素。此外,提出了未来研究的预期方向和展望。这项工作有望为开发高效的，环保,和低能耗污泥深度脱水技术。
