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The availability of waste heat may not be sufficient, constant or coincidental with the need for freshwater. Vapor compression desalination is operated independent of waste heat so the production of freshwater is not dependant on external loads.

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The successful performance of a reverse osmosis plant is highly dependant on the quality of the feedwater available to the RO unit. While RO can be a cheap alternative, it can be more expensive and less reliable when forced to use inferior quality feedwater.

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Vapor compression plants are used throughout the world on offshore platforms, drilling rigs and shipboard applications. Larger vapor compression plants are used in power stations, mine sites, construction camps and refineries for the production of distilled water.

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Typically, an antiscalant is used to retard scale formation, and a surfractant is used to enhance evaporation. Acid is used to clean the system when required.

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The maintenance and consumables of an RO plant will vary depending upon the location, type of feedwater and specific design of the plant. The VC process, however, will generally use less chemicals. Plus, it doesn’t require membranes or cartridge filters, which would need to be replaced periodically.

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Marine desalination plants operate under the harshest of conditions with concentrated seawater, boiling in an evaporator and periodic acid cleanings. Too frequent acid cleanings or the improper use of materials can shorten the life expectancy of a plant. MECO plants use the highest quality of materials most suited for the environment. Combining this with the TARGA system of scale control enables our plants to operate successfully for upwards of 20 years.