Abstract: In practical operation of reverse osmosis system of Wangting Power Plant, some problems were occurred, which includes that the output water turbidity of multimedia filter was higher, the pressure difference between water inlet terminal and concentrated water terminal of reverse osmosis device was higher, the rate of desalination was lower and others. The problems were analyzed. Some measures were adopted, which include that to change the locality of adding medicine, to adjust the operation condition of active carbon and the backwashing condition, to change the connection of low pressure flushing pipe and others. Then the abovementioned problems were solved, and the security and economical efficiency of reverse osmosis system were enhanced.

Key words: reverse osmosis, working principle, system configuration, turbidity, rate of desalination, countermeasure