Patents by Inventor Xinmin Zhan

Xinmin Zhan 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).

  • Natural pyrrhotite biological filter and method for utilizing same to synchronously remove nitrate-nitrogen and phosphorus from water
    Patent number: 10239774
    Abstract: The field of advanced wastewater treatment, and more specifically, to a natural pyrrhotite biofilter and a method for utilizing same to synchronously remove nitrate-nitrogen and phosphorus from water is provided. The method includes the following steps: (1) preparation of the packing material and construction of the biofilter; (2) start-up of the biofilter; (3) operation of the biofilter. The method disclosed in the present invention on the one hand takes pyrrhotite as the electron donor to help sulfur-based autotrophic denitrifying bacteria reduce nitrates into nitrogen gas, and on the other hand utilizes pyrrhotite and its oxidates to eliminate phosphorus through adsorption and chemical precipitation. Therefore, this method realizes synchronous removal of nitrate-nitrogen and phosphorus in water.
    Type: Grant
    Filed: June 28, 2014
    Date of Patent: March 26, 2019
    Assignee: NANJING UNIVERSITY
    Inventors: Ruihua Li, Junsong Hu, Qianqian Sun, Xiaomei Zhang, Zhuo Liu, Xinmin Zhan, Aimin Li
  • NATURAL PYRRHOTITE BIOLOGICAL FILTER AND METHOD FOR UTILIZING SAME TO SYNCHRONOUSLY REMOVE NITRATE-NITROGEN AND PHOSPHORUS FROM WATER
    Publication number: 20160311712
    Abstract: The field of advanced wastewater treatment, and more specifically, to a natural pyrrhotite biofilter and a method for utilizing same to synchronously remove nitrate-nitrogen and phosphorus from water is provided. The method includes the following steps: (1) preparation of the packing material and construction of the biofilter; (2) start-up of the biofilter; (3) operation of the biofilter. The method disclosed in the present invention on the one hand takes pyrrhotite as the electron donor to help sulfur-based autotrophic denitrifying bacteria reduce nitrates into nitrogen gas, and on the other hand utilizes pyrrhotite and its oxidates to eliminate phosphorus through adsorption and chemical precipitation. Therefore, this method realizes synchronous removal of nitrate-nitrogen and phosphorus in water.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 27, 2016
    Inventors: RUIHUA LI, JUNSONG HU, QIANQIAN SUN, XIAOMEI ZHANG, ZHUO LIU, XINMIN ZHAN, AIMIN LI
  • Method and apparatus for biologically processing fluid
    Patent number: 8431025
    Abstract: The present invention provides an apparatus and method for biologically treating fluids, in particular municipal or industrial wastewater or the like, the apparatus comprising a pair of reservoirs each containing growth medium having a biofilm thereon, the apparatus being arranged to pump the wastewater from one reservoir to another such as to alternatively expose the biofilms within the reservoirs to air and wastewater, thus making it possible to achieve sequential aerobic, anoxic and anaerobic conditions in the biofilms.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 30, 2013
    Assignee: National University of Ireland
    Inventors: Michael Rodgers, Edmond O'Reilly, Xinmin Zhan, Rose C. Mulqueen
  • Method And Apparatus For Biologically Processing Fluid
    Publication number: 20090139928
    Abstract: The present invention provides an apparatus and method for biologically treating fluids, in particular municipal or industrial wastewater or the like, the apparatus comprising a pair of reservoirs each containing growth medium having a biofilm thereon, the apparatus being arranged to pump the wastewater from one reservoir to another such as to alternatively expose the biofilms within the reservoirs to air and wastewater, thus making it possible to achieve sequential aerobic, anoxic and anaerobic conditions in the biofilms.
    Type: Application
    Filed: July 7, 2005
    Publication date: June 4, 2009
    Applicant: National University of Ireland
    Inventors: Michael Rodgers, Jr., John Mulqueen, Jr., Rose C. Mulqueen, Jr., Edmond O'Reilly, Jr., Xinmin Zhan, Jr.