Water recycling system

Details Water recycling system Water recycling system

1977-01-24

1979-03-20

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 25, 210 27, 210 29, 210 35, 210 73S, 210108, 210142, 210143, 210151, 210167, 210257M, 210297, C02B 140, C02C 104, C02C 118

Patent

active

041452798

ABSTRACT:
A closed water recycling system produces portable drinking water from total domestic waste-water, including household sewage. A microprocessor monitors the operation of the system and automatically back-flushes the ultra-filter assembly, regenerates the ion exchange bed when the monitored variables indicate this is necessary, and acts as a failsafe monitor to insure water quality by shutting down the system in case of a malfunction. For example, the bed includes acid and base regenerated resins having different specific gravities. When a monitor indicates that the bed requires regeneration, a water flush separates resins by specific gravity. Acid and bas regenerating solutions are supplied to opposite sides of the bed. The flow of regenerating solution is stopped when the salt band produced during regeneration approaches an outlet at the middle of the bed. By stopping regeneration before excess regenerative has entered the bed, a saving in regenerating solution is effected and reduction in rinse water is effected, keeping the water losses from regeneration to a minimum. (It is desireable to have only a small amount of by-product water of high salt content to dispose of.) In a preferred embodiment, a rotational digestor has a wheel which evaporates the waste-water solution.

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"Cycle-Let," Thetford Corp., Waste Treatment Products Div. Technical Bulletin, Ann Arbor, Mich. (undated).

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