Against the dual backdrop of increasing water scarcity and rising environmental protection requirements, reclaimed water treatment has become a crucial part of ensuring China's water security and promoting green, sustainable development. The resource recovery of wastewater not only effectively alleviates water scarcity but also serves as an important pathway to building a circular economy and achieving the "Dual Carbon" goals. To this end, China has progressively established a systematic framework of laws, policies, and technical standards to guide and regulate the development and utilization of reclaimed water.
I. A Continuously Improving Legal and Policy Framework
China's management of reclaimed water is built upon a legal and policy system that has evolved with the times. As early as the beginning of this century, fundamental laws such as the Water Law of the People's Republic of China explicitly stated that the state encourages and promotes centralized treatment and reuse of urban sewage. Subsequent regulations, including the Water Pollution Prevention and Control Law, further emphasized the planning, construction, and operational supervision of wastewater treatment facilities, laying the legal cornerstone for the utilization of reclaimed water.
In recent years, the push from the national level has significantly intensified, setting a clear direction for the development of the reclaimed water treatment industry. Relevant ministries and commissions have intensively issued a series of guiding documents and action plans, with the core strategy shifting from "encouraging use" to "systematic, large-scale, and regular utilization." Policy directives explicitly require integrating reclaimed water into the unified allocation and management of regional water resources, vigorously promoting its application in industrial production, municipal miscellaneous use, ecological landscaping, and agricultural irrigation. Specific utilization targets for reclaimed water have been proposed for key water-scarce cities. Furthermore, emphasis has been placed on establishing a rational pricing mechanism to maintain a price gap with tap water, using economic levers to incentivize users to prioritize reclaimed water. This marks the further consolidation of reclaimed water's status as a "second water source."
II. Increasingly Stringent and Refined Technical Standards
Parallel to the policies is an increasingly complete and scientific system of technical standards. To ensure the quality, safety, and reliability of reclaimed water, China has issued a series of national standards (GB/T series) covering various application scenarios, including industrial use, farmland irrigation, urban miscellaneous use, landscape environmental water, and even groundwater recharge. These standards are not static; they are dynamically updated in line with technological advancements and rising environmental requirements. For instance, the recently revised and implemented standard, Water Quality of Urban Wastewater Reclamation - Industrial Water, has optimized and adjusted certain water quality indicators and testing methods. This reflects China's higher quality demands for reclaimed water in the industrial sector and poses new challenges to the capabilities of water treatment technologies.
III. High-Quality Development Driven by Technological Innovation
The guidance of laws, the incentives of policies, and the specifications of standards must ultimately be realized through advanced technology. To consistently meet various reuse standards, especially in the field of industrial reuse with its complex compositions and stringent requirements, efficient and reliable water treatment technology is paramount. Among the numerous technical routes, processes centered on membrane separation, such as ultrafiltration systems water treatment, are becoming a key choice for the industry due to their outstanding pollutant removal efficiency and operational stability.
Taihe Environmental has been deeply engaged in this field for many years, and our independently developed ceramic membrane filtration system is an innovative example. Leveraging its unique advantages of high strength, strong anti-fouling capabilities, and long operational cycles, this system demonstrates outstanding performance in treating challenging wastewater and ensuring that the effluent quality consistently meets standards. The advanced ultrafiltration equipment and its integrated solutions that we provide offer solid technical support for the high-quality reuse of reclaimed water, effectively responding to the nation's call to promote industrial green transformation and water resource recycling.
In summary, China has constructed a reclaimed water management system driven jointly by legal enforcement, policy incentives, standard specifications, and technological innovation. Looking ahead, with the continuous deepening of relevant laws and policies and ongoing technological breakthroughs, China's reclaimed water treatment cause is bound to reach new heights, contributing critical strength to the building of a Beautiful China where humans and water coexist in harmony.