Patent ID: 7357849
Filing Date: 2008-04-15
Classification: B01D,C02F,Y02W,Y10S

Abstract:
1. A method for treating feedwater comprising: providing a first evaporation chamber and a second evaporation chamber having an upper section and a lower section; introducing a feedwater carrying suspended or dissolved solids into said first evaporation chamber; causing a portion of said feedwater in said first evaporation chamber to evaporate, whereby water vapor is separated from remaining feedwater; discharging water vapor from said first evaporation chamber; discharging said remaining feedwater from said first evaporation chamber; introducing a stream of hot air into said second evaporation chamber; dispersing droplets of said remaining feedwater into said stream of hot air whereby said droplets evaporate and said solids precipitate; collecting precipitated solids in said lower section; and discharging water vapor from said second evaporation chamber.