Wastewater treatment system

摘要

A system and method for treating wastewater includes two or more biological reaction zones separated by chamber walls. The system and method for treating wastewater includes static recycle of a mixed liquor from a second biological reaction zone to a first biological reaction zone. In accordance with an aspect of the present disclosure there is provided a method of treating wastewater. The method comprises introducing wastewater into a first moving biological reaction zone having an activated sludge at a first velocity to form a mixed liquor, allowing the first mixed liquor to flow into a second moving biological reaction zone to form a second mixed liquor having a second velocity, and statically redirecting a portion of the second mixed liquor from the second biological reaction zone to the first biological reaction zone.