Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1991-07-08
1992-12-15
Nozick, Bernard
Gas separation
Means within gas stream for conducting concentrate to collector
210170, B01D 1900
Patent
active
051713349
ABSTRACT:
A diffused air volatile organic compound stripping system including a complete pumping system, a sequential stripping system, a free-petroleum-product separation system, and a free-product collection system with automatic controls, all packaged into a trailerized, easy to install and operate system. The stripping portion of the system is composed of three vertical stripping tanks, step-phase plumbed together to allow gravity feed from the first tank to the last. Each of the stripping tanks includes an internal concentrator tube into which is inserted an air diffuser designed to produce thousands of tiny air bubbles. The ground water (and free-product if any) is recovered from an on-site ground-water recovery well and pumped into a baffled separator tank. The upper free product fraction flows to a free product receptor fitted with an overflow shut-off switch. The lower ground water fraction then passes out of the separator tank into the first stripping tank where it is stripped of approximately 75% of the available VOC's, passes to the next stripping tank where the process is again repeated, and finally the third stripping tank where the process is repeated again before final discharge to the waiting sewer. The pumping system provides a variable flow rate through the system, adjustable according to the VOC concentration of the influent ground water and the flow characteristics of the well.
REFERENCES:
patent: 4892664 (1990-01-01), Miller
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