D.C. Water & Sewer Authority

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for multi-deselection in wastewater treatment
- Patent number 11,999,641
- Issue date Jun 4, 2024
- Hampton Roads Sanitation District
- Maureen O'Shaughnessy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Apparatus for water treatment using a physical separator
- Patent number 10,464,832
- Issue date Nov 5, 2019
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method and apparatus for wastewater treatment using gravimetric sel...
- Patent number 10,112,856
- Issue date Oct 30, 2018
- Hampton Roads Sanitation District
- Charles Bott
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for nitrogen removal in wastewater treatment
- Patent number 10,005,683
- Issue date Jun 26, 2018
- D.C. Water & Sewer Authority
- Bernhard Wett
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and apparatus for wastewater treatment using screens
- Patent number 9,802,847
- Issue date Oct 31, 2017
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Ergonomic manhole cover lifting tool, system, method, and apparatus
- Patent number 9,738,502
- Issue date Aug 22, 2017
- D.C. Water & Sewer Authority
- Wade L. Brooks
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Method and apparatus for maximizing nitrogen removal from wastewater
- Patent number 9,469,558
- Issue date Oct 18, 2016
- D.C. Water & Sewer Authority
- Pusker Regmi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method and apparatus for maximizing nitrogen removal from wastewater
- Patent number 9,352,990
- Issue date May 31, 2016
- D.C. Water & Sewer Authority
- Pusker Regmi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method and apparatus for nitrogen removal in wastewater treatment
- Patent number 9,346,694
- Issue date May 24, 2016
- D.C. Water & Sewer Authority
- Bernhard Wett
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method and apparatus for nitrogen removal in wastewater treatment
- Patent number 9,340,439
- Issue date May 17, 2016
- D.C. Water & Sewer Authority
- Bernhard Wett
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and apparatus for wastewater treatment using gravimetric sel...
- Patent number 9,242,882
- Issue date Jan 26, 2016
- Hampton Roads Sanitation District
- Geert Nyhuis
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for treating raw sludge including a simultaneous or pulsed a...
- Patent number 7,833,415
- Issue date Nov 16, 2010
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for nitrogen removal and treatment of digester reject water...
- Patent number 7,404,897
- Issue date Jul 29, 2008
- D.C. Water & Sewer Authority
- Walter F. Bailey, Jr.
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR MULTI-DESELECTION IN WASTEWATER TREATMENT
- Publication number 20240262726
- Publication date Aug 8, 2024
- Hampton Roads Sanitation District
- Maureen O'Shaughnessy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR NUTRIENT REMOVAL USING ANOXIC BIOFILMS
- Publication number 20220289606
- Publication date Sep 15, 2022
- Hampton Roads Sanitation District
- Charles Bott
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR MULTI-DESELECTION IN WASTEWATER TREATMENT
- Publication number 20220289603
- Publication date Sep 15, 2022
- Hampton Roads Sanitation District
- Maureen O'Shaughnessy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR PASTEURIZATION, HYDROLYSIS AND CARBONIZATION
- Publication number 20210214257
- Publication date Jul 15, 2021
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
CURING AND INOCULATION OF PASTEURIZED DIGESTATE
- Publication number 20190359513
- Publication date Nov 28, 2019
- D.C. Water & Sewer Authority
- William Brower
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Application
APPARATUS AND METHOD FOR BIOFILM MANAGEMENT IN WATER SYSTEMS
- Publication number 20190263696
- Publication date Aug 29, 2019
- Hampton Roads Sanitation District
- Charles B. Bott
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR PASTEURIZATION, HYDROLYSIS AND CARBONIZATION
- Publication number 20180086656
- Publication date Mar 29, 2018
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Application
OVERCOMING BIOFILM DIFFUSION IN WATER TREATMENT
- Publication number 20170320762
- Publication date Nov 9, 2017
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
MOUNT APPARATUS FOR A SUBMERSIBLE ANALYZER AND METHOD FOR ANALYZING...
- Publication number 20170219551
- Publication date Aug 3, 2017
- D.C. Water & Sewer Authority
- Salil Kharkar
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL IN WASTEWATER
- Publication number 20160311713
- Publication date Oct 27, 2016
- D.C. Water & Sewer Authority
- Pusker Regmi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
SYSTEM, METHOD AND APPARATUS FOR WATER TREATMENT USING A PHYSICAL S...
- Publication number 20160272521
- Publication date Sep 22, 2016
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT
- Publication number 20160257587
- Publication date Sep 8, 2016
- D.C. Water & Sewer Authority
- Bernhard Wett
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER
- Publication number 20160257589
- Publication date Sep 8, 2016
- D.C. Water & Sewer Authority
- Bernhard Wett
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER
- Publication number 20160257590
- Publication date Sep 8, 2016
- D.C. Water & Sewer Authority
- Pusker Regmi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
ERGONOMIC MANHOLE COVER LIFTING TOOL, SYSTEM, METHOD, AND APPARATUS
- Publication number 20160214844
- Publication date Jul 28, 2016
- D.C. Water & Sewer Authority
- Wade L. Brooks
- B66 - HOISTING LIFTING HAULING
Information Patent Application
METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING GRAVIMETRIC SEL...
- Publication number 20160137537
- Publication date May 19, 2016
- Hampton Roads Sanitation District
- Charles Bott
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING EXTERNAL SELECTION
- Publication number 20150376043
- Publication date Dec 31, 2015
- D.C. Water & Sewer Authority
- Bernhard Wett
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER
- Publication number 20140263041
- Publication date Sep 18, 2014
- Hampton Roads Sanitation District
- Pusker Regmi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING GRAVIMETRIC SEL...
- Publication number 20140144836
- Publication date May 29, 2014
- D.C. Water & Sewer Authority
- Geert Nyhuis
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING SCREENS
- Publication number 20140131273
- Publication date May 15, 2014
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER
- Publication number 20140091035
- Publication date Apr 3, 2014
- Hampton Roads Sanitation District
- Pusker Regmi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR WATER TREATMENT USING SCREENS
- Publication number 20140083936
- Publication date Mar 27, 2014
- D.C. Water & Sewer Authority
- Sudhir N. Murthy
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT
- Publication number 20140069864
- Publication date Mar 13, 2014
- Hampton Roads Sanitation District
- Bernhard Wett
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT
- Publication number 20140069863
- Publication date Mar 13, 2014
- Hampton Roads Sanitation District
- Bernhard Wett
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

D.C. Water & Sewer Authority

Organization

Patents Grantslast 30 patents

Method and apparatus for multi-deselection in wastewater treatment

Apparatus for water treatment using a physical separator

Method and apparatus for wastewater treatment using gravimetric sel...

Method and apparatus for nitrogen removal in wastewater treatment

Method and apparatus for wastewater treatment using screens

Ergonomic manhole cover lifting tool, system, method, and apparatus

Method and apparatus for maximizing nitrogen removal from wastewater

Method and apparatus for maximizing nitrogen removal from wastewater

Method and apparatus for nitrogen removal in wastewater treatment

Method and apparatus for nitrogen removal in wastewater treatment

Method and apparatus for wastewater treatment using gravimetric sel...

Method for treating raw sludge including a simultaneous or pulsed a...

Method for nitrogen removal and treatment of digester reject water...

Patents Applicationslast 30 patents

METHOD AND APPARATUS FOR MULTI-DESELECTION IN WASTEWATER TREATMENT

METHOD AND APPARATUS FOR NUTRIENT REMOVAL USING ANOXIC BIOFILMS

METHOD AND APPARATUS FOR MULTI-DESELECTION IN WASTEWATER TREATMENT

METHOD AND APPARATUS FOR PASTEURIZATION, HYDROLYSIS AND CARBONIZATION

CURING AND INOCULATION OF PASTEURIZED DIGESTATE

APPARATUS AND METHOD FOR BIOFILM MANAGEMENT IN WATER SYSTEMS

METHOD AND APPARATUS FOR PASTEURIZATION, HYDROLYSIS AND CARBONIZATION

OVERCOMING BIOFILM DIFFUSION IN WATER TREATMENT

MOUNT APPARATUS FOR A SUBMERSIBLE ANALYZER AND METHOD FOR ANALYZING...

METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL IN WASTEWATER

SYSTEM, METHOD AND APPARATUS FOR WATER TREATMENT USING A PHYSICAL S...

METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT

METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER

METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER

ERGONOMIC MANHOLE COVER LIFTING TOOL, SYSTEM, METHOD, AND APPARATUS

METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING GRAVIMETRIC SEL...

METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING EXTERNAL SELECTION

METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER

METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING GRAVIMETRIC SEL...

METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING SCREENS

METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER

METHOD AND APPARATUS FOR WATER TREATMENT USING SCREENS

METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT

METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT

Trademarklast 30 trademarks