US 2026/0265098 A1 · BIOREACTOR WITH MEMBRANE FILTRATION AND METHODS FOR TREATING WASTEWATER

Abstract

The present disclosure provides a wastewater treatment system that includes at least one bioreactor tank growing a biomass therein. A nanofiltration, ultrafiltration, or microfiltration membrane is housed in the bioreactor tank. The membrane is in fluid communication with a liquid outlet to discharge a permeated-effluent. The membrane may be operated to filter a biologically-treated wastewater without substantially filtering the biomass growing in the bioreactor tank. For example, permeation through the membranes may be implemented only when the biomass is settled and the membranes are exposed to a substantially clear wastewater above the settled biomass. Alternatively, or in addition, the bioreactor tank may include a non-permeated-effluent outlet, and both non-permeated-effluent and membrane-permeated effluent may be produced simultaneously.

Claims23

Dependent claims

A wastewater treatment system comprising:

a sequencing batch reactor comprising a plurality of bioreactor tanks, each bioreactor tank growing a biomass therein, and comprising a liquid inlet for an influent wastewater, and
a plurality of nanofiltration, ultrafiltration, or microfiltration membranes housed in the bioreactor tanks, the membranes in fluid communication with liquid outlets to discharge a permeated-effluent,
wherein the membranes filter a biologically-treated wastewater without filtering the biomasses growing in the bioreactor tanks.

A method of treating an influent wastewater in a batch reactor that includes a bioreactor tank and a nanofiltration, ultrafiltration, or microfiltration membrane located in the bioreactor tank, the method comprising:

adding the influent wastewater to a sludge located at the bottom of the bioreactor tank;
producing a permeated effluent from the nanofiltration, ultrafiltration, or microfiltration membrane, and optionally producing an overflow effluent;
and
aerobically treating the sludge in a process that includes simultaneous nitrification and denitrification, without simultaneously producing a permeated effluent from the nanofiltration, ultrafiltration, or microfiltration membrane.

1 more element

Dependencies are inferred from the claim text.

Bioreactor with membrane filtration and methods for treating wastewater

Life of this patent

Bioreactor with membrane filtration and methods for treating wastewater

Life of this patent

Abstract

Claims23