Question

in one pargraph, compare and contrast between the disallination processes, msf and rp

Answer 1

RO and MSF are the two common methods of desalination process.
RO has much higer yield compared to MSF i.e for the same output the intake of sea water is 1/3 in RO and this reduces the power consumption, pumping costs of sea water. MSF requires heat energy for heating the brine before vaporization where as RO requires considerabe amount of energy for pressurizing the water to membrane filters. For RO elaborate arrangements for pre-treatment to remove the biological organisms,suspended solids, debris are requires, where as MSF is a vaporisation process such elaborate pre-treatment facilities are not required. Output of the RO systems depends on the the quality of the sea water feed and where as it is not the case with MSF as this is a vaporization process. MSF plants are considerably large than RO plants die to which construction and land costs are high. As steam is used, piping, scaling which requires maintenance adds up to the cost in MSF. MSF produces water with less than 100 mg/L of dissolved solids where as RO produces output with 400 mg/L of dissolved solids. Improved membrane technology , use of low cost materials, modular system of material reduces the maintenance costs of the RO. Technological advances in RO systems have reduced the unit cost of water making it easier to choose between the systems.

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