Patent application number | Description | Published |
20090050563 | Treatment method for reverse osmosis filtration systems - A method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into water and then sequentially filtering the acidified water through membrane filters to reduce alkalinity scaling, add sufficient SO | 02-26-2009 |
20100018921 | Reverse osmosis water recover method - A method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into water to form sulfurous acid (H | 01-28-2010 |
20100193436 | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal - A pre-treatment method for cleaning and maintaining reverse osmosis membrane filters by injecting sulfurous acid into waters with suspended solids in a liquid fraction to be filtered to form sulfurous acid (H | 08-05-2010 |
20110243665 | Acidification pre-treatment for UV water disinfection - A pre-treatment method injecting sulfur dioxide into waters containing suspended solids to undergo ultra violet disinfection to form sulfurous acid (H | 10-06-2011 |
20120211440 | Ballast water treatment method - A method for treating ballast water with sulfurous acid to kill invasive species and remove oxygen from the ballast water to preserve hulls from rusting. | 08-23-2012 |
20130048566 | Redox water treatment method - A redox water treatment method utilizing sulfurous acid to act as either an oxidizing or a reducing solution via pH adjustment for water conditioning | 02-28-2013 |
20130089378 | Ore leaching method for metals recovery - A redox ore leaching treatment method utilizing sulfurous acid to act as either an oxidizing or a reducing solution via pH adjustment for ore leaching and bioleaching. | 04-11-2013 |
20130112617 | Redox wastewater biological nutrient removal treatment method - A redox water biological nutrient removal treatment method utilizing sulfurous acid to act as either an oxidizing or a reducing solution via pH adjustment for water conditioning and bacterial treatment. | 05-09-2013 |
20140151307 | ACIDIFICATION PRE-TREATMENT FOR UV WATER DISINFECTION - A pre-treatment method injecting sulfur dioxide into waters containing suspended solids to undergo ultra violet disinfection to form sulfurous acid (H | 06-05-2014 |
20140339159 | STORM WATER TREATMENT APPARATUS AND METHOD - A rapidly installed intermittent flow and storm water treatment method and apparatus employing rapid solids separation and sulfur dioxide chemical dewatering technology to produce disinfected reclaimed storm water with heavy metals removed and diluted nutrients suitable for open stream or land application. | 11-20-2014 |
20150027901 | BIOMINING ENHANCEMENT METHOD - A biomining enhancement method for metal sulfide ores using sulfurous acid for microbial leaching of heavy metals into solution for subsequent removal via electro winning, ion exchange, or precipitation with alkaline and nutrient reagents for filtration removal. | 01-29-2015 |