Seawater Desalination

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Seawater Desalination & Wastewater Treatment

Most countries provide water as a basic human right; as such these countries want to ensure that water supply is secure, reliable and most of all cost effective. This technology is being used in some of the biggest desalination plants in the world, producing in excess of 1 billion litres a day.

It is been proven globally that 16” Reverse Osmosis (RO) technology provides a cost-effective water purification solution for large scale seawater and brackish water desalination as well as wastewater reclamation facilities. We have substantial experience in large scale sea water and brackish water desalination and Mega Waste Treatment facilities, some of the which exceed 50 Mega Litre per day.

We have the capability to build the most efficient 16” RO treatment plants in the world. Through being the First-to- Patent, Market, Manufacture, Install, and First-to- Operate 16” RO technologies - we have become an undisputed source of knowledge and ultimately the leader in knowhow regarding the application and design of 16” RO systems.

Our Reverse Osmosis solution has a unique competitive advantage to most other desalination technologies in that we use virtually no chemicals in our RO process, and our system design prevents any chemical discharge in the brine stream. This means that we can discharge brine back into the sea with a negligible biological impact.

The brine immediately bonds with water molecules upon discharge to reach equilibrium and not raise salinity to levels that could damage the marine eco system. The effluent salinity is within the tolerance limits of marine life even before dilution occurs (CSIR Report Jls/Allane/1996).
Bio-fouling of membranes is prevented by using Pneumatic Cross-Flow Air-Sweep cleaning which prolongs the membrane life and increases membrane efficiencies.

16” RO systems been proven to successfully treat wastewater to exceed reuse quality requirements, and numerous large-scale commercial RO plants are in use to reclaim municipal wastewater. The magnitude of these RO-based reclamation plants demonstrates the acceptance that this technology has gained recently.

We use our unique Submersible Membrane Bio Reactor (S-MBR) which, when combined with its SuperFlux® 16” RO systems, provide a full turnkey and cost effective operation for municipal Wastewater Treatment facilities. Our holistic solution for treatment of bio sludge from waste water treatment plants offers clients a unique integrated solution.

Our technology can produce potable drinking water of WHO standards through seawater desalination and bulk wastewater treatment of brackish and polluted water sources in a cost efficient and sustainable manner.

Ports and Harbours

Ports are significant users of fresh water; they are also situated on the largest reservoir of water - the sea - providing an unlimited supply of feed water to process. Desalination is a solution that assists the cities that are close to or adjacent to ports simply by removing the port from the major water grid of the city.
An average medium sized port will consume approximately 10 million litres of fresh water per day. This water is used in cleaning, loading vessels, ice making and various other hydraulic purposes. The GrahamTek 16” SuperFlux® system is already in use in a number of ports where it supplies vessels and ports with fresh water of either industrial or drinking water quality. Click here to view a case study for port use of water.

Sea Going Desalination Vessels

We have taken the concept of mobile water treatment facilities to the ocean.
Our Barge-Based and Sea Platform Water Treatment concepts are an innovative enhancement to our product offering, with the following benefits:
• Capacity to provide between 5,000-20,000 m³ of water per day
• Rapid deployment as temporary, emergency or disaster relief solution
• Fully self-contained treatment plant

Three vessel types can be deployed:
1. Powered vessel with crew
2. Mobile "Dumb" barge
3. Stationary sea platform