Invention Grant
US09416033B2 Antisolvent process for treating liquids that include high total dissolved solids
有权
用于处理包括高总溶解固体的液体的防溶剂方法
- Patent Title: Antisolvent process for treating liquids that include high total dissolved solids
- Patent Title (中): 用于处理包括高总溶解固体的液体的防溶剂方法
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Application No.: US13706943Application Date: 2012-12-06
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Publication No.: US09416033B2Publication Date: 2016-08-16
- Inventor: Ronald N. Drake
- Applicant: Ronald N. Drake
- Applicant Address: US MT Helena
- Assignee: Drake Water Technologies, Inc.
- Current Assignee: Drake Water Technologies, Inc.
- Current Assignee Address: US MT Helena
- Agency: Neugeboren O'Dowd PC
- Main IPC: C02F9/00
- IPC: C02F9/00 ; C02F1/16 ; C02F1/02 ; C02F1/38 ; C02F1/52 ; C02F1/44 ; C02F1/00

Abstract:
The present invention provides a low energy alternative to conventional thermal/evaporation processes for “zero liquid discharge” treatment of strong saline brines. The products of the process include a salt-free liquid and solid salt. In particular, an antisolvent can be mixed with liquids containing high total dissolved solids. The mixture can be chilled, whereby solid salt is precipitated and separated from the mixture at near ambient temperature leaving a mixed liquor. The antisolvent can be selected from a class of organic compounds that form solutions with salt brines that exhibit a critical solution temperature lower than a critical solution temperature of the salt brines alone. The mixed liquor can be heated to a temperature above its lower critical solution temperature to produce an antisolvent liquid phase for recycle to the process. Finally, a reduced salinity aqueous phase can be polished by reverse osmosis or other conventional technology to produce clean water for discharge or beneficial use.
Public/Granted literature
- US20130140234A1 ANTISOLVENT PROCESS FOR TREATING LIQUIDS THAT INCLUDE HIGH TOTAL DISSOLVED SOLIDS Public/Granted day:2013-06-06
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