subject: Seawater Desalination Plant Systems [print this page] With thousands of operating systems all around the world, Pure Aqua, Inc. USA introduce the new style of SWI Reverse Osmosis Seawater Desalination systems also known as Water makers for the Marine Industry converting Sea Water to Pure Drinking Water for drinking water applications, Yachts, industrial applications and commercial Freightliners all over the world.
Pure Aqua, Inc. USA manufactures and integrates marine-grade materials with high quality craftsman attention to detail. The overall system is a reliable, long-lasting marine Sea Water Desalination Reverse Osmosis plant Systems trusted by the Marine Industry worldwide.
When theres a need for fresh water in high volume, Pure Aqua, Inc. high rejection Sea Water Desalination Commercial Grade Reverse Osmosis Systems for land based applications starting from 380 GPD up to 500,000 GPD (Gallons per day) using top quality components. Our systems are delivered complete with all plumbing included ready to produce water immediately after installation and start up. Pure Aqua has custom systems that can go up to 5 million gallons per day.
Unlike direct osmosis, which is the natural tendency of pure water to flow through a membrane into impure water, reverse osmosis is achieved by applying very high pressure to seawater to counteract the osmotic flow. Thus, seawater is forced through a semi-permeable membrane, or TFC spiral RO membrane, which removes all the dissolved solids and produces fresh, potable water on the other side. This method rejects at least 98% of salts, contaminates, and pollutants from seawater.
Salt or brackish water first enters into the RO via a through-hull fitting and is filtered through the Sea Strainer, or from beach well. This feed water is then boosted to 30 psi by the Booster Pump and filtered through 25 and 5 micron Pre-filters. Oil, if present, is then separated and removed by the Oil/Water Separator. These filters remove sediments and suspended solids from the feed water prior to entering the High Pressure Pump. A Low pressure switch shuts down the RO in the event of low flow conditions, preventing cavitations in the High Pressure Pump. Pure Aqua, Inc. uses duplex stainless piping in all industrial seawater desalination plant systems.
The High Pressure Pump supplies the required force to drive the feed water through the semi-permeable Reverse Osmosis (R.O.) Membrane. An automatic high pressure safety relief valve protects the water maker if pressure exceeds recommended levels. In seawater desalination plant systems, the working pressure is between 750 psi to 1000 psi.
The fresh water produced flows out of the Reverse Osmosis Membrane where it is up to 99.2% free of salts, minerals, and other ions. It then passes into the Product Flow Meter where the amount of potable water produced per minute is shown on the flow meter. Next, the Salinity Probe reads the salt content of the product water in parts per million or in conductivity. Finally, the last filtration process is completed by an optional Ultraviolet Sterilizer where 99.8% of all micro-organisms, including viruses and bacteria are destroyed.
There is a shortage of pure drinkable water in the world today. One would think that a planet covered in mostly water would not have that issue. The problem is that about 70% of the Earth is covered in water, yet only about 1% of that water is drinkable. That is not a very high percentage. The majority of the undrinkable water is from the seas and oceans. A percentage is also frozen away in the polar icecaps. So one can imagine just how desperate the water situation really is and has the potential to become in the coming generations. Thankfully, there is a process called desalination where fresh water can be made from salt water. This process works, but it is very costly and uses a lot of energy. A desalination plant is a huge project to undertake. They can range in size depending on the need and requirements of a region. The largest desalination plant in the world is located in the United Arab Emirates. It produces up to 300 million cubic meters per year of clean water. The largest one in the United States is located in Tampa Bay, Florida. That one produces up to 34.7 million cubic meters of clean water per year. As you can see, the amounts are different as the needs of the two regions are extremely different.
According to Wikipedia.org, the traditional process used in various operations is vacuum distillationessentially the boiling of water at less than atmospheric pressure and thus a much lower temperature than normal. This is because the boiling of a liquid occurs when the vapor pressure equals the ambient pressure and vapor pressure increases with temperature. Thus, because of the reduced temperature, energy is saved.
There are many manufacturers that have come to specialize in reverse osmosis technologies and methods. These companies have engineered systems that create fresh filtered water out of salty or brackish water. Pure Aqua, Inc., a renowned company located in Santa Ana, California, is a global leader in the designing, manufacturing, and exportation of reverse osmosis water treatment systems. This enterprise is very much needed in a world where the population increase is rapidly endangering the small percentage of drinkable water this planet has to offer. For this very reason alone, the knowledgeable staff and engineers at Pure Aqua, Inc. have dedicated themselves to the business of water filtration. With many years of dedicated experience and water knowledge, Pure Aqua, Inc. and its team are ready and able to take on the water crisis.
