Vacuum-sewage-collection system

Details Vacuum-sewage-collection system Vacuum-sewage-collection system

1985-01-29

1987-05-05

Metz, Andrew H.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

137205, 137433, 137192, 210117, 210118, 210121, 210123, 134 18, C02F 100

Patent

active

046630562

ABSTRACT:
Holding tanks in an extremely simple vacuum-sewage system can provide high volume storage against emergencies such as vacuum pump failure, while providing under normal circumstances frequent, sudden, small-volume discharges in which any one holding tank discharge may trigger one or more others as in a cascade sequence, precluding conditions that might produce septic accumulations. Each holding tank has a float valve with a float that can be held on the respective valve seat, against buoyancy by sewage, by conventional vacuum pumping of the main. When vacuum in the main is degraded by use of a special valve or switch for the purpose or by holding tank discharge, holding tanks are selectively discharged as a result.

REFERENCES:
patent: 3224460 (1965-12-01), Cann, III
patent: 4333830 (1982-06-01), Michael
patent: 4333831 (1982-06-01), Petzinger
patent: 4396435 (1983-08-01), West et al.
patent: 4489744 (1984-12-01), Merrill
patent: 4492630 (1985-01-01), Rymal, Jr.
patent: 4497714 (1985-02-01), Harris
patent: 4535800 (1985-08-01), Leech

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