High-efficiency and low-consumption membrane desalination technology and key materials

Basic conditions such as plant, R&D platform and pilot test platform have been met, and personnel and funds are sufficient. Energy distribution and pollution control of reverse osmosis desalination system; In addition, the comprehensive performance of key membrane materials in the process of reduction and utilization of concentrated seawater membrane method needs to be improved. Through intelligence introduction, exchange and cooperative development, the energy distribution, process mass transfer and pollution control of system-level equipment are systematically optimized; At the same time, new high-performance membrane materials with excellent flux, pollution resistance and wettability are developed for concentrated seawater concentration. Through intelligence introduction, exchange and cooperative development, the energy distribution, process mass transfer and pollution control of system-level equipment are systematically optimized; At the same time, new high-performance membrane materials with excellent flux, pollution resistance and wettability are developed for concentrated seawater concentration. Freshwater resources are basic natural resources and strategic economic resources, which are related to national security and regional sustainable development. Taking Xiong'an New Area and Bohai New Area as examples, the gap between supply and demand of fresh water has reached 230 million cubic meters per year, and the carrying capacity of water resources has reached the natural upper limit. The contradiction between supply and demand is very prominent. The shortage of freshwater resources has become one of the key bottlenecks restricting the high-quality development of regional economy and society. Seawater desalination can effectively alleviate the shortage of freshwater resources and is a national strategic emerging industry. Reverse osmosis is the mainstream technology of seawater desalination. At present, the market capacity of seawater desalination in the world has reached 65%. However, the total capacity of reverse osmosis desalination in China is still low, only 1.2% of the global capacity of reverse osmosis desalination in the same period, and there are key common problems such as high energy consumption of water production and large discharge of concentrated seawater; In addition, China's independent core technology in this field is not leading, lacks forward-looking and disruptive technology, and the performance stability and maturity of key materials are insufficient. The above problems restrict the further development of China's membrane desalination industry.