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.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Sep. 10, 2012
Sijing Wang, Shanghai, CN;
Lei Wang, Shanghai, CN;
Haiwu Zhang, Shanghai, CN;
Weiqing Xu, Shanghai, CN;
Ying Zhou, Shanghai, CN;
Sijing Wang, Shanghai, CN;
Lei Wang, Shanghai, CN;
Haiwu Zhang, Shanghai, CN;
Weiqing Xu, Shanghai, CN;
Ying Zhou, Shanghai, CN;
General Electric Company, Schenectady, NY (US);
Abstract
A method for reducing recalcitrant chemical oxygen demand (COD) of a liquid in a water system is provided. The method comprises pretreating the liquid in a pretreatment unit () to remove indigenous bacteria or microbes to a population level below which the indigenous organisms can interfere with the screened and externally introduced microorganisms. The liquid is then provided to a reactor () that has a filter bed () formed with a carrier material (). Special microbes are screened and used to colonize the carrier material () to remove recalcitrant COD. A biofilm is cultured on the surface of the carrier material () to immobilize the screened microbes in the reactor (). The method further comprises adding a co-substrate as the liquid enters the reactor () and percolating the liquid through the filter bed () colonized with the screened microbes to degrade at least part of the recalcitrant COD under aerobic conditions. The screened microbes comprise at least one microbial species selected from the group consisting ofand yeast.