关键词: 风能, 太阳能, 反渗透, 海水淡化, 平潭大屿岛, wind energy, solar energy , reverse osmosis, desalination, Pingtan Dayu Island

Abstract: This paper reviewed the development of desalination driven by green energy including wind energy and solar energy in the past 10~20 years while the desalination technology was dominated by the reverse osmosis ( RO) . Nowadays, the cost of green energy (0.05~0.09 $ /kWh) has been close to the cost of traditional fossil energy (0.05 ~ 0.09 $/kWh) , so the green energy driving desalination has the potential to solve the problems of traditional desalination technologies. Besides, this paper introduced a case study of wind/solar power driving RO desalination application in Pingtan Dayu Island of Fujian Province. The results of the project include: 1) successfully developing a wind/solar driving desalination system with a capacity of 10 m3/d , and optimizing the unstable energy generation and stable energy requirement via the energy storage using batteries; 2) determining the critical water production rate of 25% and maintained a low RO fouling level under no chemical usage conditions.