Liquid purification or separation – Processes – Separating
Patent
1991-04-18
1992-11-03
Nozick, Bernard
Liquid purification or separation
Processes
Separating
210245, B01D 1702
Patent
active
051604434
ABSTRACT:
An apparatus and method is disclosed for recycling contaminated industrial liquids. In the preferred embodiment, a conventional, medium-sized "van" type of truck houses, transports and powers a dual-loop assembly. A filter-loop assembly receives and stores recycling liquid in a waste liquid holding tank. The liquid is pumped through a pasteurizing heater and a separating centrifuge and back to the tank. Filter-test valves in the filter-loop enable testing to determine desired heating and separation.
When flow-rate adjustments produce satisfactory heating and separation, the recycling liquid is directed through a cooler, out of the filter-loop and into an additive-loop assembly where the liquid is pumped from a clean liquid holding tank, by additive compound injections, and back to the clean tank. Additive-test valves in the additive-loop enable testing to determine required quantities of specific additive compounds. When tests indicate satisfactory levels of the compounds, the recycling liquid is directed out of the additive-loop assembly and out of the system. The filter and additive test valves enable periodic testing during recycling to insure consistency. If the recycling becomes inadequate, the filter-loop and/or additive-loop is closed until changes in the flow-rate or additive injection rates again produce satisfactory recycling.
REFERENCES:
patent: 2240167 (1941-04-01), Adams
patent: 2324763 (1943-07-01), Carruthers
patent: 3401115 (1968-09-01), Meyer et al.
patent: 3664951 (1972-05-01), Armstrong
patent: 3954611 (1976-05-01), Reedy
patent: 4383920 (1983-05-01), Muller et al.
patent: 5026488 (1991-06-01), Mesheau
Butler Associates
Chisholm, Jr. Malcolm J.
Nozick Bernard
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