Nitrite-oxidizing bacteria activity inhibitor and method
OwnerDaehwan Rhu, Minki Jung +4inventors
InventorsDaehwan Rhu, Minki Jung, Donjin Ju, Honkeun Park, Dongwoo Kim, Hojae Hwang
Life of this patent
Estimating the term…
Abstract
A device and method for shortcut nitrogen removal and nitrite-oxidizing bacteria activity inhibition are disclosed herein. An embodiment of the present invention provides a hollow fiber diffuser comprising: a plurality of hollow fibers on which bacteria can be attached and grow; and an inlet capable of supplying gas to one sides of the plurality of hollow fibers, wherein the gas includes oxygen and carbon dioxide, nitrite can be produced by the oxygen, and the concentration of oxygen in the gas is adjusted by the oxygen and the carbon dioxide.
Claims14
A nitrite-oxidizing bacteria (NOB) activity inhibitor suppressing nitrite oxidation by NOB using an NOB suppressant, the NOB activity inhibitor comprising:
- a leaching tank removing part of bacteria and solids stuck to a membrane diffuser unit;
- an inhibition tank immersing the membrane diffuser unit in the NOB suppressant;
- and
- a washing tank washing the NOB suppressant out of a surface of the membrane diffuser unit.
A method for suppressing nitrite-oxidizing bacteria (NOB) from oxidizing nitrite using an NOB activity inhibitor, the method comprising:
- immersing a membrane diffuser unit in a leaching tank of the NOB activity inhibitor;
- immersing the membrane diffuser unit, where some solids have been leached, in an inhibition tank filled with an NOB suppressant;
- and
- immersing the membrane diffuser unit in a washing tank to remove the NOB suppressant remaining on a surface of the membrane diffuser unit.
Dependencies are inferred from the claim text.