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MEI Online: Environmental Issues: Latest News: July 23rd 2013


Click for more info on Sustainable Minerals '20


:: Low-cost Mobile Method for Environmentally-Sound, Leachate and Waste Water Disposal


The Neptune Evaporator System manufactured by Neptune Systems is a new and low-cost method for environmentally-sound leachate, water treatment and mining applications. Delivering onsite disposal at a cost of less than $0.01/gallon, the Neptune Evaporator converts the liquid stream into an aerosol, which allows the water to evaporate while all contaminants settle back in a narrow alley at the front of the evaporator. Mounted on a trailer for easy transport onsite or to multiple locations, the Neptune Evaporator typically processes an average of 4,000 gallons/h and up to 9,000 gallons/h in optimum conditions.

“Currently the most common method of treating leachate is hauling it to a waste water treatment plant or installing a treatment plant onsite at a cost of around $0.30/gallon plus trucking costs," says Roxanne Garrett, president of Neptune Systems. “As to the Neptune Evaporator, all inclusive operating costs (which include the complete system - plus fuel, maintenance, and labour) are estimated at less than $0.01/gallon evaporated," she says. Garrett stresses that other companies have attempted to use evaporation to dispose of leachate; however, the systems are either combustion driven, or require separation of the solids prior to beginning the aerosol process.

Regarding the operation of the Neptune Evaporator, Garrett explains that when the leachate is turned into an aerosol, all containments and debris with a size in excess of 5 micron drop out in a designated ‘evaporation alley’. The remainder of the water and all particulates smaller than 5 micron are converted into stage 1 aerosol and disappear into the atmosphere.




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