The invention relates to a
seawater desalination device and a method, and relates to the
seawater device and its method by combining an electrolytic technology, a
capacitance adsorption deionization technology and a low pressure
reverse osmosis technology. The device comprises an electrolytic purifying
system, a
capacitance adsorption deionization
system and a low pressure
reverse osmosis system; the electrolytic purifying system comprises a stop valve, a
water supply pump, an electrolytic
machine, a deposition pot and a
microfiltration apparatus; the
capacitance adsorption deionization system comprises the stop valve, an
elevator pump, a
cartridge filter, the
water supply pump, a capacitance adsorption deionization apparatus, a primary
fresh water storage tank and a concentrated water
booster pump; the low pressure
reverse osmosis system comprises the stop valve, the
water supply pump, the
cartridge filter, a
high pressure pump, a low pressure reverse
osmosis membrane component and a
fresh water storage tank. The method comprises the following steps: electrolyzing, performing capacitance adsorption deionization and primarily desalinating, finally performing low pressure
reverse osmosis desalination. The method has the advantages of short process flow, small investment and less environmental
pollution, the reverse
osmosis system material has the advantages of low requirement and low cost, and solves the problem of nationalization, and the
seawater desalination device has the advantages of high efficiency, low
energy consumption, low production cost, high integrated level of the device, small volume, easy operation and the like.