Naturally abundant seawater sulphate was subsequently converted to sulphides which were deposited in the organic material. In this way sulphur became a constituent of fossil fuels.

The Seawater Process absorbs sulfur dioxide (SO₂) from flue gas in seawater and oxididizes it prior to discharge; in other words returning sulphur to the sea in the way it originally appeared - as dissolved sulphate.

The treating process covers the cooling of the exhaust gases, removing of SOx, sooth and particulates from the gas and emitting the clean gas to open atmosphere.

The hot flue gas coming from the motor is quenched before entering the scrubber. The scrubber is a wet type, without packing. Seawater is alkaline and is sprayed in the scrubber by nozzles to absorb SOx molocules.

The effluent from the scrubber contains the sulphite and sulphate ions. The effluent is treated to oxidize the sulphite ions to convert to sulphate ions, which are harmless by aeration.

An air blower and air diffusers are used for the aeration process. The harmless effluent is discharged to sea afar oxidation process.

1. No waste is formed, so no waste handling required.
2. Requires only seawater and air.
3. No additional chemicals.
4. Has lower capital and operational costs than do other kinds of wet FGD systems.
5. The absorbed SO₂ is oxidized to harmless sulphate ion, a natural constituent of seawater.
6. The scrubber are not subject to clogging.
7. High reliability.