NITROGEN-REDUCING WASTEWATER TREATMENT SYSTEM

摘要

A wastewater treatment system is provided having a pretreatment tank which receives wastewater from a wastewater source, and an aeration tank which is in fluid communication with the pretreatment tank. A recirculation pump is carried in the aeration tank and returns wastewater from the aeration tank to the pretreatment tank. The recirculation pump returns the wastewater according to a recirculation ratio R:I where R is the volumetric flow rate of wastewater through the recirculation pump and I is average volumetric flow rate of wastewater entering the pretreatment tank. A control panel cycles the recirculation pump on and off according to the recirculation ratio.

主权项

1. A wastewater treatment system comprising:
a pretreatment tank having an inlet and an outlet, said inlet receiving wastewater influent from a wastewater source, said pretreatment tank having anaerobic conditions; an aeration tank having aerobic conditions, said aeration tank having an inlet and an outlet, said inlet of said aeration tank in fluid communication with said outlet of said pretreatment tank; a recirculation pump is carried in said aeration tank; a recirculation pipe is in fluid communication with said recirculation pump, said recirculation pump moves wastewater from said aeration tank to said pretreatment tank, said recirculation pump moves said wastewater according to a defined recirculation ratio.