Lutgarde M Raskin

US Patent:

20110017663, Jan 27, 2011

Filed:

Jul 21, 2010

Appl. No.:

12/840886

Inventors:

Lutgarde Raskin - Ann Arbor MI, US
Giridhar Upadhyaya - Ann Arbor MI, US
Kim F. Hayes - Ann Arbor MI, US
Jess C. Brown - Sarasota FL, US

Assignee:

The Regents of the University of Michigan - Ann Arbor MI
Carollo Engineers, Inc. - Phoenix AZ

International Classification:

C02F 3/00
C02F 3/34
C02F 3/02
C02F 3/30

US Classification:

210617, 210150

Abstract:

A system and method for simultaneous biologically mediated removal of contaminants (including at least arsenic or nitrate) from water are disclosed herein. The system includes i) a bioreactor having a length suitable for housing at least three different microbial populations, or ii) two bioreactors coupled together, the two bioreactors each having a length and an empty bed contact time that together are suitable for housing at least three different microbial populations. The system also includes a biofilm attachment medium positioned in i) the bioreactor, or ii) the two bioreactors; and the at least three different microbial populations formed on the biofilm attachment medium. The microbial populations are selected from oxygen reducing microbes, nitrate reducing microbes, arsenate reducing microbes, sulfate reducing microbes, and uranium reducing microbes.

US Patent:

20210309955, Oct 7, 2021

Filed:

Sep 30, 2019

Appl. No.:

17/277910

Inventors:

- Ann Arbor MI, US
Lutgarde Raskin - Ann Arbor MI, US
Timothy Fairley - Ann Arbor MI, US
Nishant Jalgaonkar - Ann Arbor MI, US

International Classification:

C12M 1/00
C12M 1/12
C12M 3/06
C12M 1/26
C12P 5/02
C02F 3/12
C02F 3/28
C02F 3/10

Abstract:

The disclosure relates to bioreactors, for example for biological treatment and, more specifically to bioreactor insert apparatus including biofilms and related methods. The bioreactor insert apparatus provides a means for circulation of reaction medium within the bioreactor, a biofilm support, and biological treatment of an inlet feed to the reactor/insert apparatus. The bioreactor insert apparatus has a high relative surface area for biofilm attachment and is capable of generating complex flow patterns and increasing treatment efficiency/biological conversion activity in a biologically-active reactor. The high surface area structure incorporates multiple biofilm support structures such as meshes at inlet and outlet portions of the structure. The biofilm support structures and biofilms thereon can increase overall reaction rate of the bioreactor and/or perform some solid/liquid separation in the treatment of the wastewater or other influent.