Patents by Inventor Srikanth Muddasani

Srikanth Muddasani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for reduction of sulfide from water and wastewater
    Patent number: 11008240
    Abstract: The instant application is directed towards methods for removing sulfide from a wastewater stream. The pH of the wastewater stream is adjusted to between 7.0 and 8.0. A first oxidizing agent is mixed with the wastewater stream, oxidizing the sulfide to elemental sulfur. The wastewater stream is then softened by mixing lime with the wastewater stream. The addition of lime further raises the pH of the wastewater stream to 10.0 or higher, and converts the elemental sulfur to soluble sulfide (S2-) and/or thio-sulfate. Calcium carbonate is precipitated and sulfide (S2-) and/or thio-sulfate is adsorbed thereon. Thereafter, the wastewater stream is directed to a solids-liquid separation process, which separates the calcium carbonate and adsorbed sulfide (S2-) and/or thio-sulfate from the wastewater stream. The solids-liquid separator produces an effluent that includes residual elemental sulfur.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: May 18, 2021
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Kashi Banerjee, Srikanth Muddasani, David E. Parker, Bernard Roy Mack
  • Process for Reduction of Sulfide from Water and Wastewater
    Publication number: 20200290910
    Abstract: The instant application is directed towards methods for removing sulfide from a wastewater stream. The pH of the wastewater stream is adjusted to between 7.0 and 8.0. A first oxidizing agent is mixed with the wastewater stream, oxidizing the sulfide to elemental sulfur. The wastewater stream is then softened by mixing lime with the wastewater stream. The addition of lime further raises the pH of the wastewater stream to 10.0 or higher, and converts the elemental sulfur to soluble sulfide (S2-) and/or thio-sulfate. Calcium carbonate is precipitated and sulfide (S2-) and/or thio-sulfate is adsorbed thereon. Thereafter, the wastewater stream is directed to a solids-liquid separation process, which separates the calcium carbonate and adsorbed sulfide (S2-) and/or thio-sulfate from the wastewater stream. The solids-liquid separator produces an effluent that includes residual elemental sulfur.
    Type: Application
    Filed: February 15, 2017
    Publication date: September 17, 2020
    Applicant: Veolia Water Solutions & Technologies Support
    Inventors: Kashi Banerjee, Srikanth Muddasani, David E. Parker, Bernard Roy Mack