Desalination

Desalination By: Junior DeLarosa

Desalination is the process of removing salt and other minerals from ocean and other salt water to make it purified. Also to make table

salt and other salt substances.desalination plants on a large scale use extreme amounts of energy. The world's largest desalination plant is the

Jebel Ali Desalination Plant in the United Arab Emirates. It is a dual purpose facility that uses multi-stage flash.it produces 300 million cubic meters

of fresh water per a year. The United States' largest desalination plant is in Tampa Bay. It produced 25 million gallons of fresh water a day in

2007. The world's water consumption rate is doubling every 20 years, outpacing by two times the rate of population growth. It is projected that by

the year 2025, water demand will exceed supply by 56%, due to persistent regional droughts, shifting of the population to urban coastal cities, and

water needed for industrial growth. The supply of fresh water is on the decrease. Water demand for food, industry and people is also rising along

with the population.

The desalination process is disclosed, which means it combines two or more substantially different water treatment processes in a unique manner

to desalinate sea water especially sea water. This process is used to produce a high yield of high quality fresh water, including potable water, at an

energy consumption equivalent to standard methods. Another method used is Prior Art Processes. In this process, a nanofiltration step is

combined with at least one of sea water reverse osmosis processes. Multistage flash distillation is also used to provide an integrated desalination

system by which sea water can be efficiently and economically converted to high quality potable water. During the desalination process, water is

produced in yields which are at least 70%-80% greater than the drinkable water available from the prior art processes. Typically a process of this

invention using the nanofiltration initial step will produce reductions of calcium, magnesium, sulfate, and bicarbonate ion content by 63%-94%, pH

of the water also decreases at about 0.4-0.5 units and total dissolved solids content reduces to 35%-50%.