Liquid purification or separation – Flow – fluid pressure or material level – responsive – Diverse sensing means
Patent
1978-08-04
1980-07-08
Wyse, Thomas G.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Diverse sensing means
210196, 210202, 210258, C02C 102
Patent
active
042116546
ABSTRACT:
A waste treatment apparatus operated either by gravity or by positive displacement pump in which a variable inflow of contaminated liquid is aerated, clarified, and filtered. The filtered liquid is used to backwash one of at least a pair of rapid sand filters, while the other rapid sand filter is being utilized. The alternating cycle of backwashing and filtering by the respective rapid sand filters, all of which is integrated with overall filtering operation, insures that at least one filter is fully operative at any time.
The apparatus is adapted for variable inflow and can adapt to such unfavorable exigencies as overtaxing inflow and clogging at the rapid sand filter or at an earlier stage of contaminated liquid treatment. Sensors are located suitably throughout the apparatus to adjust the system to overflow conditions or clogged conditions, and the flows can be redirected through a preferred stage. The system is self-regulated and is responsive to critical conditions such as too little water for treatment, excessive inflow of contaminated liquid for treatment, clogged condition in the filters, clear well, etc.
The apparatus for treating the contaminated liquid is constructed from an elongated, curvilinear cross section pipe which is cut to length and compartmentalized interiorly for the various steps of aerating, clarifying, filtering, and chlorinating. Such pipe is readily available and is adapted for containing contaminated liquid and treatment thereof, and for subsurface installation.
REFERENCES:
patent: 4021347 (1977-05-01), Teller et al.
patent: 4036754 (1977-07-01), Peasley
patent: 4100070 (1978-07-01), White
patent: 4142975 (1979-03-01), Kinzer
Weber Leslie A.
Weber Raymond C.
Wyse Thomas G.
Young John A.
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