Study On Theory And Simulation Of Reverse Osmosis Seawater Desalination System

With the development of human society and technology, natural resources increasingly depleted, the natural resources is a great potential and green renewable energy, which has great value of research and development.The current trend to the development of the mainstream is used for power generation, study of desalination using the few and far between.General reverse osmosis desalination requires external driving force, such as using motor drive, oil pump drive, etc. Some isolated island in the deep sea, oceangoing ships and other energy are precious place, the development and utilization of ocean tide can be driven directly to desalination way, will have profound significance and broad market prospect.This paper put forward the trend to osmosis desalination research,by analyzing the trend capture device, the trend of energy use, the pressure recovery system and other related trends to seawater desalination system theory, according to capture the trend to use the different methods of and different ways of using pressure recycling equipment, and design the tide direct-drive type reverse osmosis desalination, tide can direct drive over pressure recovery of reverse osmosis desalination and tide to generate electricity desalination of three different schemes.On the basis of fluid mechanics and water hydraulic transmission technology, study the characteristics of system related subsystems and components, and established system theory model of this three schemes.Take the appropriate control strategy, and take the simulation analysis on three kinds of schemes, the results show that the direct driving type the trend of energy use form than indirectly driven system energy utilization rate is high, the system pressure is relatively stable;Surplus energy recovery unit can reverse osmosis desalination system is of great significance on the trend, the large extent reduce the energy consumption of system, the system has good pressure fluctuation compensation, so the system as a whole has a good stability and increase the service life of reverse osmosis membrane group effectively.According to the theoretical analysis and simulation analysis, the trend of small can direct drive over pressure recovery of reverse osmosis desalination experiment platform for the design and development.