Seawater reverse osmosis(SWRO) desalination plants are being expanded to apply due to the advantages of lower energy consumption. The desalination plants tend to be larger considering the cost of capital, operation and maintenance, the research and de...
Seawater reverse osmosis(SWRO) desalination plants are being expanded to apply due to the advantages of lower energy consumption. The desalination plants tend to be larger considering the cost of capital, operation and maintenance, the research and development for high efficiency components is being accelerated. Hyosung Goodspings Inc. is developing a high efficiency energy recovery system for saving electric power consumption in the plants. Direction control valves of the energy recovery system have novel structure which combine poppets and spools to minimize leakage. The valves is able to reduce external power required to change the direction using pressure balancing parts. To apply the energy recovery system in the large plants, multiple energy recovery device is connected in parallel. The pilot scale system of parallel structure was manufactured, and it was tested the performance by a pilot plant.