Patent ID: 9533900
Date: 2017-01-03
CPC Classifications: C02F,Y02W

Claim:
1. An aerator/digester apparatus comprising: (a) a tubular housing defining a chamber having a bottom end and a top end, said tubular housing having at least one wastewater inlet proximate the bottom end and at least one outlet proximate the top end; (b) a longitudinally extending air pipe centrally disposed in the chamber, the longitudinally extending air pipe including an air manifold having a pattern of apertures, the pattern including a matrix of rows of relatively small diameter apertures and rows of relatively larger diameter apertures, with columns of small diameter apertures laterally offset with respect to columns of larger diameter apertures and where the small diameter apertures are formed at an upwardly inclined angle and the larger diameter apertures are formed at a downwardly inclined angle to the longitudinal access of the air pipe, said pattern being disposed at an elevation immediately superior to the at least one wastewater inlet; and (c) an impingement surface affixed to the longitudinally extending air pipe proximate the top end.