US 9,315,402 B2 · Systems and methods for wastewater treatment

Abstract

Disclosed is a system and method for treating wastewater. The system includes a bioreactor which defines a basin for receiving wastewater to be treated; a membrane module in fluid communication with the bioreactor; and a dissolution tank. The tank includes a pressure vessel that contains a portion of the wastewater to be treated and provides a regulated, pressurized gas head space above the wastewater. The tank also includes at least one liquid spray nozzle that permits passage of the wastewater into the gas head space of the pressure vessel and an outlet for discharging the wastewater having a desired gas concentration from the pressure vessel. The system also includes a pumping mechanism for supplying the wastewater to the spray nozzle of the tank such that fluid droplets are formed in the gas head space and the gas contained within the pressurized head space is dissolved into the wastewater.

Claims18

Dependent claims

A system for treating wastewater comprising:

(a) a bioreactor which defines a basin configured to receive untreated wastewater to be treated;
(b) a membrane module in fluid communication with the bioreactor;
(c) a dissolution tank comprising:
(i) a pressure vessel configured to contain treated wastewater and to provide a gas head space comprising at least one gas above the treated wastewater;
(ii) at least one liquid spray nozzle configured to pass the untreated wastewater from the bioreactor into the gas head space under conditions effective to dissolve the gas in the untreated wastewater;
and
(iii) an outlet configured to discharge the treated wastewater from the pressure vessel into the bioreactor or the membrane module;
and
(d) a gas source in communication with the dissolution tank.

6 more elements

Dependencies are inferred from the claim text.

Systems and methods for wastewater treatment

Life of this patent

Systems and methods for wastewater treatment

Life of this patent

Abstract

Claims18