Sewage system

Abstract

A sewage system having a central drywell pump room surrounded by a circular-segment well system comprising first and second wet wells and a third or overflow retention well. System-intake is into a distribution chamber located at a segment-well separating the first and second wet wells and having sluice gates for normal-operation diversion into either of these wet wells and provision for emergency overflow into both these wells; the third well connects with the first and second wet wells by means of an overflow port located at a level higher than the distribution chamber and by means of a primary drain line and a secondary drain line; a station overflow pipe in the third well higher than the overflow port provides the ultimate emergency relief; pumps in the pump room provide discharge connection in parallel, with a first pump for reducing the first wet well level, a second pump for reducing either wet-well level or both simultaneously, and a third pump for reducing the second wet well level; sluice gates provide interconnection between the wet wells; the dry-well rises within an isolating wall to a capping deck having a superstructure above sheltering pump motors for the pumps; manholes and access ladders and platforms permit inspection and special operation of the wet wells and overflow retention well.

Dependencies are inferred from the claim text.