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Desalination is a process that takes away mineral components from saline water. It is an open-source incremental technology to realize the utilization of water resources. The total amount of fresh water can be increased; and the stable supply of water for coastal residents and industrial water supply can be guaranteed..
The composite seawater tank for desalination device jointly designed and developed by Hengli and partner adopts an integrated parallel design. The head and bottom of the tank are integrated with 2 sets of specially designed inlet and drain valves to control seawater and fresh water respectively. Orderly in and out. The oil cylinder is simple and integrated in appearance and structure, which is conducive to the convenient installation of the equipment..
Unlike conventional oil tanks, the composite seawater tank requires a very high level of corrosion resistance. All parts and components are made of duplex stainless steel, and there is no welding structure.

Both the surface of the piston rod and the inner hole of the cylinder barrel are made of APS (plasma spray) oxide ceramic coating, which greatly improves the wear and corrosion resistance of the cylinder, and fully meets the high frequency (24 hours) continuous operation of the hydraulic cylinder.
  In addition, the hydraulic cylinder also adopts a special sealing structure and sealing material. Under the premise of ensuring the sealing performance, operating speed and frequency, it can be effectively applied to seawater media and scrape the crystals and sediment on hardware. At the same time, the sealing material also needs to meet the requirements of FDA certification (food grade) to ensure that the water quality is pollution-free and meets the requirements of drinking grade.
As a new technical product, the composite seawater tank will play a very important role in the use of seawater resources in human daily life.