Patent ID: 9156710
Filing Date: 2015-10-13
Classification: B01D,C02F,Y02A,Y02W

Abstract:
1. A method of wastewater treatment for industrial waste water, the industrial waste water containing at least 3% dissolved salts, the method comprising: pretreating said wastewater to produce a clear effluent; providing the effluent to a pressure vessel within a solar collector, the pressure vessel being a tube extending along a tube axis and the solar collector being a trough-type collector having a focal axis, said tube axis coinciding with said focal axis; and superheating the clear effluent under pressure within said pressure vessel using solar energy of the solar collector, said solar energy being focused on said tube along said tube axis, wherein the pressure vessel is provided with flow control configured to retain the clear effluent under the oxidation conditions for a variable period of time determined according to a concentration of organic matter in said clear effluent, thereby retaining said clear effluent in said tube under oxidation conditions over a focused solar energy length of said focal axis for said period of time determined according to said concentration of organic matter therein, thereby to provide sufficient oxidation conditions from said solar energy to oxidize organic matter in said clear effluent; and passing said clear effluent from said solar collector following oxidation, to a flash chamber at atmospheric pressure, therein to boil said effluent into a vapor and leave a brine containing said at least 3% dissolved salts.