F - Mech Eng,Light,Heat,Weapons – 17 – C
Patent
F - Mech Eng,Light,Heat,Weapons
17
C
137/75
F17C 3/00 (2006.01) E03F 5/10 (2006.01) E03F 5/22 (2006.01)
Patent
CA 1067790
ABSTRACT OF THE DISCLOSURE: A sewage system having a centrall drywell pump room surrounded by a circular-segment well system comprising first and second wet wells and a third or over- flow retention well. System intake is into a distribution chamber located at a segment-wall 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 ulti- mate 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 drywell 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.
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