Patents by Inventor Petia Tontcheva

Petia Tontcheva 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).

  • Membrane bioreactor system using reciprocating membrane
    Patent number: 10112148
    Abstract: The present invention relates to membrane bioreactor (“MBR”) system that includes a mechanical membrane reciprocation system to reduce or eliminate membrane fouling. The disclosed MBR system can be operated with higher flux and lower fouling than MBR systems using air scouring. Furthermore the system can remove nitrogen and phosphorous with one RAS and one or no internal recirculation line. The membrane can be reciprocated by a low RPM motor connected to a pulley via belt to rotate rotor to convert rotational motion into reciprocating motion of membrane. Various mechanical means can also be employed to create the reciprocating motion.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 30, 2018
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Jaeho Ho, Shaleena Smith, Gyu Dong Kim, Jaren Patamasank, Petia Tontcheva, Hyung Keun Roh
  • MEMBRANE BIOREACTOR SYSTEM USING RECIPROCATING MEMBRANE
    Publication number: 20180117534
    Abstract: The present invention relates to membrane bioreactor (“MBR”) system that includes a mechanical membrane reciprocation system to reduce or eliminate membrane fouling. The disclosed MBR system can be operated with higher flux and lower fouling than MBR systems using air scouring. Furthermore the system can remove nitrogen and phosphorous with one RAS and one or no internal recirculation line. The membrane can be reciprocated by a low RPM motor connected to a pulley via belt to rotate rotor to convert rotational motion into reciprocating motion of membrane. Various mechanical means can also be employed to create the reciprocating motion.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Jaeho HO, Shaleena SMITH, Gyu Dong KIM, Jaren PATAMASANK, Petia TONTCHEVA, Hyung Keun ROH
  • Membrane bioreactor system using reciprocating membrane
    Patent number: 9884295
    Abstract: The present invention relates to membrane bioreactor (“MBR”) system that includes a mechanical membrane reciprocation system to reduce or eliminate membrane fouling. The disclosed MBR system can be operated with higher flux and lower fouling than MBR systems using air scouring. Furthermore the system can remove nitrogen and phosphorous with one RAS and one or no internal recirculation line. The membrane can be reciprocated by a low RPM motor connected to a pulley via belt to rotate rotor to convert rotational motion into reciprocating motion of membrane. Various mechanical means can also be employed to create the reciprocating motion.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: February 6, 2018
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Jaeho Ho, Shaleena Smith, Gyu Dong Kim, Jaren Patamasank, Petia Tontcheva, Hyung Keun Roh