The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 19, 2023

Filed:

Feb. 01, 2021
Applicant:

D.c. Water & Sewer Authority, Washington, DC (US);

Inventors:

Sudhir N. Murthy, Herndon, VA (US);

Matthew Higgins, Lewisburg, PA (US);

Haydee De Clippeleir, Washington, DC (US);

Bernhard Wett, Innsbruck, AT;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B09B 3/40 (2022.01); C02F 1/02 (2023.01); C02F 11/10 (2006.01); B09B 3/00 (2022.01); C02F 11/18 (2006.01); C02F 11/12 (2019.01); C02F 11/04 (2006.01);
U.S. Cl.
CPC ...
B09B 3/00 (2013.01); B09B 3/40 (2022.01); C02F 1/025 (2013.01); C02F 11/04 (2013.01); C02F 11/10 (2013.01); C02F 11/12 (2013.01); C02F 11/18 (2013.01); C02F 11/185 (2013.01); C02F 2201/009 (2013.01); C02F 2209/09 (2013.01); C02F 2303/04 (2013.01); C02F 2303/10 (2013.01); Y02W 10/37 (2015.05);
Abstract

This invention proposes the use of Thermal Hydrolysis (or Thermal Carbonization) at different temperatures and pressures in alternate waste streams to achieve an optimal mix of high digestion rates and pasteurization rates while still achieving large viscosity reduction. In the disclosed embodiments means of combining Thermal Hydrolysis (or Thermal Carbonization) and Pasteurization including but not limited to placing the waste streams in parallel, placing them in series, utilizing heat input in parallel and heat exchangers in series are explored to optimize hydrolysis rates, minimize the use of high pressure tanks, optimize energy used, and manage viscosity characteristics of the solids.


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