Suspended media membrane biological reactor system including multiple biological reactor zones

Abstract

A wastewater treatment system is provided comprising a first biological reaction zone, a second biological reaction zone and a membrane operating system. The first biological reaction zone is constructed and arranged to receive and treat the wastewater. The second biological reaction zone includes a separation subsystem and is constructed and arranged to receive effluent from the first biological reaction zone. A suspension system for adsorbent material is provided in the second biological reaction zone. The membrane operating system is located downstream of the second biological reaction zone and is constructed and arranged to receive treated wastewater from the second biological reaction zone and discharge a membrane permeate.

1 . A wastewater treatment system for treating wastewater comprising:
 a first biological reaction zone having a wastewater inlet and a first zone mixed liquor outlet,   a second biological reaction zone having
 a mixed liquor inlet in fluid communication with the first zone mixed liquor outlet, 
 a suspension system for adsorbent material, 
 a second zone mixed liquor outlet, and 
 a separation subsystem associated with the second zone mixed liquor outlet; and 
   a membrane operating system located downstream of the second biological reaction zone having
 an inlet in fluid communication with the second zone mixed liquor outlet, and 
 a treated effluent outlet. 
   
     
     
         2 . The wastewater treatment system of  claim 1 , wherein the first biological reaction zone and the second biological reaction zone are segregated sections of the same vessel. 
     
     
         3 . The wastewater treatment system of  claim 1 , wherein the first biological reaction zone and the second biological reaction zone are located in separate vessels.