Side Stream Treatment for Overflow

Abstract

A system and method of treating wastewater. In one embodiment, the system comprises a biological reactor fluidly connected to a source of wastewater and having a treated wastewater outlet, a fixed film biological reactor connected to the source of wastewater and having a fixed film effluent outlet, and a ballasted system fluidly connected to the fixed film effluent outlet. The ballasted system may comprise a ballast reactor tank configured to provide a ballasted effluent, and a source of ballast material fluidly connected to an inlet of the ballast reactor tank. The system may further comprise a bypass line having an inlet fluidly connected to the source of wastewater, a first outlet fluidly connected to the ballasted system, and a second outlet fluidly connected to the fixed film biological reactor, the bypass line configured to bypass the fixed film biological reactor.

1 - 20 . (canceled) 
     
     
         21 . A method of facilitating the treatment of wastewater in a wastewater treatment system comprising a conduit connected to an outlet of a source of wastewater and an inlet to a biological reactor, the method comprising:
 providing a diverter fluidly connectable to the source of wastewater and upstream of the biological reactor of the wastewater treatment system, the diverter configured to direct a portion of the wastewater from the conduit;   providing a fixed film biological reactor having an inlet connectable to the diverter, the fixed film biological reactor configured to receive an overflow volume of the source of wastewater and to provide a fixed film effluent;   providing a bypass line fluidly connectable to the diverter and configured to bypass the fixed film reactor; and   providing a ballasted system fluidly connectable to the fixed film effluent, the ballasted system comprising:   a ballast reactor tank configured to provide a ballasted effluent; and   a source of ballast material fluidly connected to an inlet of the ballast reactor tank.   
     
     
         22 . The method of  claim 21 , further comprising providing a source of ballast material fluidly connectable to the ballasted system. 
     
     
         23 . The method of  claim 21 , wherein the ballast material is magnetic. 
     
     
         24 . The method of  claim 23 , wherein the ballast material is magnetite. 
     
     
         25 . The method of  claim 21 , further comprising providing a source of flocculant fluidly connected to an inlet of the ballasted reactor tank. 
     
     
         26 . The method of  claim 21 , further comprising providing a source of coagulant fluidly connected to an inlet of the ballasted reactor tank. 
     
     
         27 . The method of  claim 21 , further comprising providing a sensor configured to measure a property of the wastewater. 
     
     
         28 . The method of  claim 27 , further comprising providing a controller configured to divert the wastewater based at least in part on the property measurement. 
     
     
         29 . A method of treating wastewater during a high flow period, comprising:
 establishing a first liquid circuit having liquid to be treated flowing therein from a source of wastewater to an inlet of a first biological reactor;   establishing a second liquid circuit having liquid to be treated flowing therein from a source of wastewater to an inlet of at least one of a second biological reactor and a separation system; and   establishing a third liquid circuit having an effluent from the second biological reactor flowing therein from the second biological reactor to at least one of the first biological reactor and the separation system.   
     
     
         30 . The method of  claim 29 , wherein the second biological reactor is a fixed film biological reactor. 
     
     
         31 . The method of  claim 29 , wherein the separations system is a ballasted system.