Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1999-05-10
2000-10-17
Walker, W. L.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210 85, 210104, 210196, 210197, 210293, 210291, 210284, 2104161, B01D 3500
Patent
active
061325996
ABSTRACT:
A wastewater treatment unit (10) includes a recirculation chamber (32), a dosing chamber (34) having no direct fluid connection to the recirculation chamber, and at least two filter layers (28,30) in a single tank (12). Each filter layer contains filter media (56) and is located atop the recirculation and dosing chambers. The wastewater treatment unit also includes an influent pipe (50) connected to the recirculation chamber, a recirculation pump (72), a recirculation valve (74), and an effluent discharge pipe (88) connected to the dosing chamber. In operation, the influent pipe directs wastewater entering the unit into the recirculation chamber. The recirculation pump feeds wastewater from the recirculation chamber onto the filter layers. The recirculation valve then directs the filtrate back to the recirculation and dosing chambers. The filtrate is then discharged from the unit via the effluent discharge pipe. A control system is also provided that includes a level control for the chambers and an over-amperage alarm for the recirculating pump and a ponding alarm for alerting when ponding of water is detected on either of the filter layers.
REFERENCES:
patent: 2366917 (1945-01-01), Levine
patent: 3123555 (1964-03-01), Moore
patent: 3126333 (1964-03-01), Williams
patent: 3825119 (1974-07-01), Rost
patent: 3933641 (1976-01-01), Hadden et al.
patent: 3957642 (1976-05-01), Oldham et al.
patent: 4100070 (1978-07-01), White et al.
patent: 4251359 (1981-02-01), Colwell et al.
patent: 4812237 (1989-03-01), Cawley et al.
patent: 5240611 (1993-08-01), Burton
patent: 5277814 (1994-01-01), Winter et al.
patent: 5480561 (1996-01-01), Ball et al.
patent: 5531894 (1996-07-01), Ball et al.
patent: 5597477 (1997-01-01), Harry, III
patent: 5609754 (1997-03-01), Stuth
patent: 5645725 (1997-07-01), Zitzelsberger et al.
patent: 5690827 (1997-11-01), Simmering et al.
patent: 5707513 (1998-01-01), Jowett et al.
Cecil Terry K.
Earthtek Enviromental Systems, Inc.
Walker W. L.
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