Seawater Desalination

The realization of a small and lightweight desalination unit depends on the development of a container enclosing a reverse osmosis membrane (RO) that can withstand high pressure.
Due to the difficulty of dealing with the high pressure, domestic majors could not succeed in the miniaturization.
Dedicated with a long time effort, a breakthrough came in developing MYZ series.
E-40 among MYZ series is one of the smallest model in the world weighing just 50kg easily loading onto small trucks or small boats that can remove 99.2～99.8% of chloride ion (salt) by applying 800PSI (5.5 Mpa) to the RO and turning into clean drinking water not only for the desalination of seawater but also for the filtration of muddy water contaminated by heavy metals, etc.

This desalination unit removes 99.2～99.8% of chloride ion (salt) by the reverse osmosis membrane. The amount of purified water varies depending on the salt concentration, water temperature, and water quality. The standard water purification ratio would be 30% for purified water and 70% for drainage when using seawater. When using freshwater, 60% for purified water and 40% for drainage would be produced.

Seawater pumped up is cleaned of coarse dust by a pretreatment filter, and is sent to a reverse osmosis membrane under pressure of 800 PSD (approx. 5.5 MPa), which is about four times the water pressure of a fire engine. By closing the discharge valve and applying the pressure, the seawater loses a place to go and starts to permeate into the freshwater side located between the seawater and the reverse osmosis membrane resulted in blocking all the salt and minerals and extracting purified water.

There are many models, depending on the required production capacity. The smallest one is the E-40 (capable of producing 40litres of safe and good tasting freshwater per hour), and the largest one is available at 250litres or more.

This small unit is used for various construction sites where it is difficult to secure purified water such as marine harbor construction and mountainous areas.
In addition to seawater, the unit can be used if there is a water source such as a river or pond nearby, so this desalination system is appreciated by many workers involved in civil engineering.