Patent ID: 6787035
Filing Date: 2004-09-07
Classification: C02F,Y02W

Abstract:
A biological reactor apparatus for treating wastewater comprising:(a) a tank having an inlet, an outlet, and a drain; (b) at least two baffles separating said tank into a mixing zone, a static zone, and a mixed liquor circulation channel in the arrangement of mixing zone/baffle/mixed liquor circulation channel/baffle/static zone; (c) said mixing zone located in the inlet side of the tank comprising at least one mixing devices; (d) said static zone located in the outlet side of the tank; (e) said mixed liquor circulation channel located between said mixing zone and said static zone for introducing mixed liquor to the lower portion of said static zone from upper portion of said mixing zone and providing a mixed liquor circulation flow to carry settled solids from the bottom of said static zone to said mixing zone.