
Table of Contents Industrial water plays a crucial role in the modern industrial system. It is a fundamental element for the smooth operation of industrial production, and almost all stages of a product—from raw materials to processing and shaping—cannot proceed without water. Generally speaking, industrial water includes not only water used in the production process but also domestic water for employees within the factory area. This paper will analyze the classification, water quality and pretreatment requirements of industrial water use, discuss the corresponding pollution control technologies and recycling approaches, and provide references for enterprises to seek better industrial water services. Why Should We Understand Industrial Water Use? Industrial water projects are not only related to the quality and efficiency of industrial production, but also closely linked to environmental protection and the sustainable use of resources. The United Nations World Water Development Report 2024: Water for Prosperity and Peace points out that issues related to water availability and water quality pose risks to industry, which may lead to supply chain disruptions. This directly affects the development of industry (and the economy). Reducing water demand and harmful wastewater discharge can achieve a win-win situation in water resource protection and water pollution control. As the traditional water resource development model has approached the ecological red line, the reclaimed water reuse industry has quietly emerged. It has become an important supplement to the industrial water system and promotes the transformation of industrial water use from linear consumption to a closed-loop cycle. Through advanced water treatment technologies, wastewater is treated to meet the water quality standards for industrial water and then reused in industrial production. This not only greatly eases the pressure of water resource shortage but also significantly reduces the water use costs of industrial enterprises. What is Industrial Water Use? What are Its Classifications?







