A review of physical and chemical methods to improve the performance of water for dust reduction

Dust control is of great significance to industrial process safety and environmental protection. Wet dust reduction is the most commonly used dust control technology, and the physical and chemical properties of water are closely related to its dust reduction ability. In order to improve dust reduction efficiency, scholars have done much fruitful work in the physical and chemical modification of water. It is essential to summarize the progress of this research direction and shows what is lacking at present in recent years. This paper reviews the research progress on improving the performance of water for dust reduction by physical and chemical methods in the past ten years. The physical methods are mainly adopted to improve dust reduction performance in spray technologies, which include air atomization, ultrasonic atomization, magnetized water and water mist charging. And the chemical methods are mainly used to prepare dust suppression materials, which can be distinguished by single-phase dust suppressants and gas-liquid two-phase dust suppression foam. In this paper, we analyze the advantages as well as disadvantages of various methods and point out the unresolved issues. Furthermore, the development directions are proposed to provide meaningful guidance for wet dust reduction technologies.