Our Technology

Our technology and research differs from other seawater desalination technologies as we try to minimize the energy consumed by the equipment during the desalination process. The method that we use, which is molecule cracking, can resolve big issues faced by all current seawater desalination methods. These are considerable energy consumption and inferior water quality. We have found the cleanest method to separating salt from water, making our water the purest with the lowest consumption of energy.

Compared to existing methods, our method is able to produce better quality water. Our desalination method, along with the molecule cracking method, ensures that costs stay low, the efficiency of the desalination process is high, and the pollution produced is very low. It can be installed at existing seawater desalination very quickly to alleviate the huge water demand around the world.

There are three main issues that need to be solved with all current seawater desalination methods, shown in Table 4-3. However, only one of the three issues can be solved using current methods.

Table 4-4 – Sea Water Desalination issues yet to be resolved

No. Issue
I High corrosion of seawater and scale blockage affect the service life of the unit
II High energy or power consumption
III Total desalination

The first issue of corrosion and scale blockages is yet to be resolved, but different treatment methods can relieve the issue to varying degrees. Blockages are more serious with Membrane Reverse Osmosis (MRO) than that of distillation methods. The higher the temperature in the distillation method, the crystal count will be lower. This method distills seawater at high temperatures, meaning that the blockage of pipelines is not as serious as that of general distillation plants.

The second and third issues are where Rainter is focusing most of its resources. There has been a power recycling device created for MRO and other methods in order for power to be recycled by 35%-50%, reducing the costs. However, the quality of water from a method such as MRO is inferior so manufacturers mix fresh water and treated seawater at a ratio of 7:3 before selling it.

The water quality from distillation is higher. Despite Multi-effect Distillation, Multi-stage Flash, and Vapor Compression methods being adopted by most manufacturers, the energy that is used is extremely high from turning hydrogen from a liquid state to a gas state, and that energy cannot be recycled. The costs are still high, especially as the water quality is higher. Many manufacturers try to reduce the amount of energy used by using lower temperatures. However, this affects the water quality by reducing the quality, meaning that it is very difficult to strike a good balance between the cost and quality of the water. Some methods, including the MRO method, are slowly being phased out.

Our method of seawater desalination is by distillation. The table below shows where the costs go to with various desalination methods. The first cost is for the unit itself. The second is the cost of energy used for these methods. We are cooperating with a solar energy company so that the energy that the units can use up to 90% of the solar energy that they collect. The third set of costs are any extras that are required and maintenance costs.

Table 4-5 – Cost Comparison

Water source Process Costs (%) Water production cost per unit (1 tonne)
Equipment (Note 1) Energy (Note 2) Others (Note 3)
Sea water Reverse Osmosis 33 36 31 35.67
Multi-stage Flash 42 52 6 64.65
Multi-effect Distillation 37 58 5 57.97
Vapor Compression 42 52 6 31.21
Small Molecule Cracking 38 25 37 8.01

Note 1: Amortization of machinery

Note 2: Power or vapor consumption

Note 3: Costs for extras and personnel operation management

The savings in costs can clearly be seen. Our units are much less complex than others currently being used for seawater desalination. We can simplify the complexity of distillation with our method, while still having high water quality. The construction costs and costs of management are therefore much lower. Our energy source device can also reduce energy costs dramatically.