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Class Information
Number: 210/743
Name: Liquid purification or separation > Processes > Including controlling process in response to a sensed condition > Ph sensing
Description: Process in which the hydrogen (or hydronium) ion concentration is measured and used as a basis for response by the actuating means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7572378 |
Recycled irrigation water treatment system including reverse osmosis |
Aug. 11, 2009 |
| 7566400 |
Wastewater chemical/biological treatment method and apparatus |
Jul. 28, 2009 |
| 7553424 |
Method for controlling sterile water production device |
Jun. 30, 2009 |
| 7553412 |
Method for continuous on-site monitoring and treatment of water |
Jun. 30, 2009 |
| 7507323 |
Self-cleaning chlorine generator with pH control |
Mar. 24, 2009 |
| 7494588 |
Wastewater purification system |
Feb. 24, 2009 |
| 7481940 |
Biomass treatment of organic waste or water waste |
Jan. 27, 2009 |
| 7476319 |
Method and apparatus for continuously controlling denitrification in variable nitrogen loads in wastewater |
Jan. 13, 2009 |
| 7431835 |
Portable water quality monitoring and treatment system |
Oct. 7, 2008 |
| 7425271 |
Method for treating sludge |
Sep. 16, 2008 |
| 7422692 |
Raw influent treatment processes eliminating secondary biological treatment |
Sep. 9, 2008 |
| 7416668 |
Wastewater chemical/biological treatment plant recovery apparatus and method |
Aug. 26, 2008 |
| 7404905 |
Water treatment system, apparatus and method |
Jul. 29, 2008 |
| 7374694 |
Method for remineralizing raw water |
May. 20, 2008 |
| 7326340 |
System for controlling sulfide generation |
Feb. 5, 2008 |
| 7326352 |
Water treatment system |
Feb. 5, 2008 |
| 7300586 |
pH stable activated carbon |
Nov. 27, 2007 |
| 7294276 |
Process for preparing fluoropolymer dispersions |
Nov. 13, 2007 |
| 7285207 |
Methods and apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater |
Oct. 23, 2007 |
| 7273561 |
Method for determining the chemical dosage required to reduce sulfides in wastewater to acceptable levels |
Sep. 25, 2007 |
| 7261821 |
Process for treating an aqueous system with chlorine dioxide |
Aug. 28, 2007 |
| 7208117 |
Automated process for inhibiting corrosion in an inactive boiler containing an aqueous system |
Apr. 24, 2007 |
| 7169297 |
pH adjuster-based system for treating liquids |
Jan. 30, 2007 |
| 7160442 |
Apparatus for reduction of biological wasted sludge |
Jan. 9, 2007 |
| 7157008 |
Apparatus and process for water conditioning |
Jan. 2, 2007 |
| 7153473 |
Hemostatic system and components for extracorporeal circuit |
Dec. 26, 2006 |
| 7153437 |
Controlling corrosion in process water systems |
Dec. 26, 2006 |
| 7135118 |
Method for treatment against corrosion and depositions in domestic supply water stallations |
Nov. 14, 2006 |
| 7087172 |
Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater |
Aug. 8, 2006 |
| 7060189 |
Method and apparatus for recycling wash chemicals |
Jun. 13, 2006 |
| 7052599 |
Method and apparatus for reuse of abrasive fluid used in the manufacture of semiconductors |
May. 30, 2006 |
| 6955765 |
Recycled irrigation water treatment system |
Oct. 18, 2005 |
| 6932910 |
Method and apparatus for recycling wash chemicals used in powder coating |
Aug. 23, 2005 |
| 6846421 |
Filtering method and filter chamber sealing arrangement |
Jan. 25, 2005 |
| 6841078 |
PH reduction system and method for concrete plant discharge |
Jan. 11, 2005 |
| 6797179 |
Method for removing dissolved metals from wastewater by electrocoagulation |
Sep. 28, 2004 |
| 6773600 |
Use of a clathrate modifier, to promote passage of proteins during nanofiltration |
Aug. 10, 2004 |
| 6767472 |
Catalytic fixed bed reactor systems for the destruction of contaminants in water by hydrogen peroxide and ozone |
Jul. 27, 2004 |
| 6746609 |
Cooling tower water treatment |
Jun. 8, 2004 |
| 6733471 |
Hemostatic system and components for extracorporeal circuit |
May. 11, 2004 |
| 6692641 |
Algal and nutrient control method for a body of water |
Feb. 17, 2004 |
| 6652752 |
Biodegradation of oil sludge |
Nov. 25, 2003 |
| 6645385 |
System and method for removal of fluoride from wastewater using single fluoride sensing electrode |
Nov. 11, 2003 |
| 6623647 |
Methods of optimized control of multiple oxidizer feedstreams |
Sep. 23, 2003 |
| 6589429 |
Method of treating industrial wastewater |
Jul. 8, 2003 |
| 6569334 |
METHOD OF HIGH-CONCENTRATION CULTURE OF NITRIFYING BACTERIA OR DENITRIFYING BACTERIA CONTAINED IN ACTIVATED SLUDGE, CULTURE PROMOTER TO BE USED IN HIGH-CONCENTRATION CULTURE METHOD OF NITRIFYI |
May. 27, 2003 |
| 6569336 |
Method, device and use of said method for biological elimination of metal elements present in an ionized state in water |
May. 27, 2003 |
| 6533942 |
Cooling tower water cleaning system |
Mar. 18, 2003 |
| 6482325 |
Apparatus and process for separation and recovery of liquid and slurry abrasives used for polishing |
Nov. 19, 2002 |
| 6423234 |
Air and water purification using continuous breakpoint halogenation |
Jul. 23, 2002 |
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