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Class Information
Number: 210/903
Name: Liquid purification or separation > Materials removed > Nitrogenous
Description: Collection of disclosures under collection 902 in which the material is or contains nitrogen. The material may be organic (e.g, amines) or inorganic (e.g., nitrates).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7625490 |
Use of a magnetic separator to biologically clean water |
Dec. 1, 2009 |
| 7622047 |
Fluidized bed wastewater treatment |
Nov. 24, 2009 |
| 7604733 |
Apparatus for biological removal of phosphorus and nitrogen using granulated methane-oxidizing bacteria |
Oct. 20, 2009 |
| 7597808 |
Apparatus and method for treating wastewater containing nitrogen-containing dyes |
Oct. 6, 2009 |
| 7582467 |
Method and apparatus for processing organic material |
Sep. 1, 2009 |
| 7575679 |
Process and equipment for treating ammonium containing liquid |
Aug. 18, 2009 |
| 7575684 |
Waste water treatment apparatus and waste water treatment method |
Aug. 18, 2009 |
| 7575685 |
Low oxygen biologically mediated nutrient removal |
Aug. 18, 2009 |
| 7572369 |
System for supporting denitrification |
Aug. 11, 2009 |
| 7550087 |
Apparatus and method for treating FGD blowdown or similar liquids |
Jun. 23, 2009 |
| 7550082 |
Process and equipment for treating ammonium containing liquid |
Jun. 23, 2009 |
| 7550086 |
Advanced treatment method of ethanolamine-wastewater based on physico-chemical and biological coupling process |
Jun. 23, 2009 |
| 7550083 |
Process and equipment for treating ammonium containing liquid |
Jun. 23, 2009 |
| 7544299 |
Biological nutrient removal process and process control for same |
Jun. 9, 2009 |
| 7540959 |
Process and equipment for treating ammonium containing liquid |
Jun. 2, 2009 |
| 7537698 |
Process and equipment for treating ammonium containing liquid |
May. 26, 2009 |
| 7510655 |
Process to improve the efficiency of a membrane filter activated sludge system |
Mar. 31, 2009 |
| 7485229 |
Closed sulfur circulation system |
Feb. 3, 2009 |
| 7481933 |
Process to improve the efficiency of a membrane filter activated sludge system |
Jan. 27, 2009 |
| 7473365 |
Method and installation for the biological treatment of water using activated sludge and comprising aeration regulation |
Jan. 6, 2009 |
| 7470367 |
Process for removing a contaminant from contaminated groundwater |
Dec. 30, 2008 |
| 7465394 |
Wastewater treatment system |
Dec. 16, 2008 |
| 7462284 |
Dissimilatory sulfate reduction as a process to promote denitrification in marine recirculating aquaculture systems |
Dec. 9, 2008 |
| 7455780 |
Method of treating stormwater runoff and domestic waste with high carbon ash |
Nov. 25, 2008 |
| 7445722 |
Thermal water treatment method |
Nov. 4, 2008 |
| 7442353 |
Heat recirculating cooler for fluid stream pollutant removal |
Oct. 28, 2008 |
| 7435349 |
System for treating wastewater containing organic compounds |
Oct. 14, 2008 |
| 7416669 |
Biological nutrient removal process and process control system for same |
Aug. 26, 2008 |
| 7410584 |
Methods and apparatus for treating wastewater employing a high rate clarifier and a membrane |
Aug. 12, 2008 |
| 7410589 |
Hog manure treatment method |
Aug. 12, 2008 |
| 7407579 |
Method and apparatus for treating ammonium-containing liquid |
Aug. 5, 2008 |
| 7407580 |
System and method for treating carbon, nitrogen, phosphorous containing wastewater |
Aug. 5, 2008 |
| 7396466 |
Method and system for filtration of wastewater |
Jul. 8, 2008 |
| 7393452 |
Compositions and methods for the treatment of wastewater and other waste |
Jul. 1, 2008 |
| 7390400 |
Denitrification reactor with a fixed culture |
Jun. 24, 2008 |
| 7384553 |
Method for operating anaerobic ammonium oxidation vessel and anaerobic ammonium oxidation equipment |
Jun. 10, 2008 |
| 7378021 |
Tidal vertical flow wastewater treatment system and method |
May. 27, 2008 |
| 7371328 |
Method for treating hog and animal waste |
May. 13, 2008 |
| 7347940 |
Nitrogen removal system and method for wastewater treatment lagoons |
Mar. 25, 2008 |
| 7326343 |
Treatment of wastewater containing phosphorous and nitrogen |
Feb. 5, 2008 |
| 7314563 |
Membrane coupled activated sludge method and apparatus operating anoxic/anaerobic process alternately for removal of nitrogen and phosphorous |
Jan. 1, 2008 |
| 7314562 |
Floating wetland structures for use in water remediation |
Jan. 1, 2008 |
| 7309434 |
Apparatus and method for wastewater treatment |
Dec. 18, 2007 |
| 7309433 |
Fluid bed expansion and fluidisation |
Dec. 18, 2007 |
| 7306733 |
Autotrophic denitrification chamber and calcium reactor |
Dec. 11, 2007 |
| 7300570 |
Apparatus and method for treating wastewater using contact media |
Nov. 27, 2007 |
| 7297275 |
Biomembrane filtration apparatus and method |
Nov. 20, 2007 |
| 7279100 |
Methods and apparatus for treating wastewater employing a high rate clarifier and a membrane |
Oct. 9, 2007 |
| 7276164 |
Nitrate removal in a purge stream using constructed wetlands |
Oct. 2, 2007 |
| 7261811 |
Liquid-solid circulating fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorus removal |
Aug. 28, 2007 |
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