The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 1997
Filed:
Sep. 17, 1993
Harry Brandt, El Macero, CA (US);
John H Tait, Carmichael, CA (US);
Aquatech Services, Inc., Fair Oaks, CA (US);
Abstract
A method of treating and disposing of waste water containing salt, such as the brine that results from production of oil and/or gas wells, which includes introducing the waste water into a reverse osmosis unit to produce concentrated brine, and passing the concentrated brine through a combustion heat evaporator wherein said combustion heat is generated in a submerged combustion evaporator or exhaust gases from an internal combustion engine to power a waste heat evaporator to produce a further concentrated brine. The concentrated brine from the combustion heat evaporator can then be mixed with a liquid such as the waste water that is introduced into the reverse osmosis unit. The resulting product can then be injected into a subterranean formation for purposes of disposal. The method allows the volume of the waste water to be significantly reduced while also increasing the salt concentration of the waste water. In other embodiments the reverse osmosis unit and the combustion heat evaporator are used individually. Alternatively, the concentrated brine from the combustion heat evaporator can be introduced into a dryer to evaporate water from the concentrated brine to produce low moisture salt particles.