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Class Information
Number: 210/726
Name: Liquid purification or separation > Processes > Making an insoluble substance or accreting suspended constituents > Utilizing precipitant, flocculant, or coagulant, each with accelerator or with each other or plural precipitants, flocculants, or coagulants > Sequential introduction
Description: Process in which a time interval occurs between one addition and another.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7595001 |
Process for the treatment of saline water |
Sep. 29, 2009 |
| 7591952 |
Water treatment mixture and methods and system for use |
Sep. 22, 2009 |
| 7563373 |
Removal of phosphorous from wastewater |
Jul. 21, 2009 |
| 7491333 |
Industrial waste water treatment process |
Feb. 17, 2009 |
| 7445717 |
Process for treating waste from the production of energetics |
Nov. 4, 2008 |
| 7429329 |
Hybrid chemical/mechanical dewatering method for sewage treatment plants |
Sep. 30, 2008 |
| 7413664 |
Selenium removal process |
Aug. 19, 2008 |
| 7374694 |
Method for remineralizing raw water |
May. 20, 2008 |
| 7361283 |
Extraction and treatment of heavy metals |
Apr. 22, 2008 |
| 7329357 |
Method for removing fluorine from a fluorine-containing wastewater |
Feb. 12, 2008 |
| 7279103 |
Process for the purification of acidic metal-bearing waste waters to permissible discharge levels with recovery of marketable metal products |
Oct. 9, 2007 |
| 7264735 |
Method for producing drinking water |
Sep. 4, 2007 |
| 7264733 |
Method for treating heavy-metal-containing wastewater using sulfidizing agent |
Sep. 4, 2007 |
| 7261820 |
Method for decreasing a concentration of metal in aqueous solution |
Aug. 28, 2007 |
| 7220360 |
Integrated technology in sequential treatment of organics and heavy metal ions wastewater |
May. 22, 2007 |
| 7138063 |
Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation |
Nov. 21, 2006 |
| 7135116 |
Process for recovery of nutrients from wastewater |
Nov. 14, 2006 |
| 7077963 |
Processes for water treatment |
Jul. 18, 2006 |
| 7048852 |
Method and apparatus for treating water or wastewater to reduce organic and hardness contamination |
May. 23, 2006 |
| 7048860 |
Material for treating acidic waste water |
May. 23, 2006 |
| 6969467 |
Hydrate-based desalination with hydrate-elevating density-driven circulation |
Nov. 29, 2005 |
| 6936177 |
Method for removing metal from wastewater |
Aug. 30, 2005 |
| 6919031 |
Method of treating water and wastewater with a ballasted flocculation process and a chemical precipitation process |
Jul. 19, 2005 |
| 6916426 |
Method of waste treatment |
Jul. 12, 2005 |
| 6905606 |
Method of removing calcium from water containing calcium hydrogen carbonate in high concentration |
Jun. 14, 2005 |
| 6863819 |
Water treatment method |
Mar. 8, 2005 |
| 6863825 |
Process for removing arsenic from aqueous streams |
Mar. 8, 2005 |
| 6861041 |
Method for treating and upgrading effluents containing metallic sulphates using an ammonia addition step |
Mar. 1, 2005 |
| 6827860 |
Method for eliminating nickel ions and lead ions from ferrous salt solutions |
Dec. 7, 2004 |
| 6821434 |
System for removal of arsenic from water |
Nov. 23, 2004 |
| 6811704 |
Method for anion removal by forming chemical precipitation under an electric field and continuous process for anion removal |
Nov. 2, 2004 |
| 6802980 |
Arsenic removal in conjunction with lime softening |
Oct. 12, 2004 |
| 6802981 |
Method for purification and disinfection of water |
Oct. 12, 2004 |
| 6761775 |
Rinsewater separable and recyclable anaerobic curing impregnation compositions |
Jul. 13, 2004 |
| 6758976 |
Simplified purification of phosphoric acid plant pond water |
Jul. 6, 2004 |
| 6758977 |
Purification of phosphoric acid plant pond water |
Jul. 6, 2004 |
| 6746592 |
Process for removing aluminum species from alkali metal halide brine solutions |
Jun. 8, 2004 |
| 6712910 |
Rinsewater separable and recyclable heat curing impregnation compositions |
Mar. 30, 2004 |
| 6613230 |
Method for simultaneous removal of arsenic and fluoride from aqueous solutions |
Sep. 2, 2003 |
| 6607651 |
Process and system for treating the discharge stream from an ion exchanger |
Aug. 19, 2003 |
| 6582605 |
Method of treating industrial waste waters |
Jun. 24, 2003 |
| 6569342 |
Process for treating waters, soils, sediments and/or silts |
May. 27, 2003 |
| 6551514 |
Cyanide detoxification process |
Apr. 22, 2003 |
| 6547970 |
Method for the treatment of wiping solution |
Apr. 15, 2003 |
| 6535795 |
Method for chemical addition utilizing adaptive optimization |
Mar. 18, 2003 |
| 6495050 |
Method for treating manganese containing water |
Dec. 17, 2002 |
| 6471871 |
Method for the removal of silicon and heavy metals from aqueous streams |
Oct. 29, 2002 |
| 6436297 |
Defluoridation of waste water |
Aug. 20, 2002 |
| 6419836 |
Composition for treatment of water and reconditioning of soils |
Jul. 16, 2002 |
| 6398968 |
Methods for pressure stabilized removal of contaminants from solution |
Jun. 4, 2002 |
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