Gas and liquid contact apparatus – Fluid distribution – Systems
Patent
1986-02-06
1987-05-05
Chiesa, Richard L.
Gas and liquid contact apparatus
Fluid distribution
Systems
2102212, 210750, 261 26, 261122, 261124, B01F 304
Patent
active
046630899
ABSTRACT:
A diffused bubble aeration system for small scale water supplies includes a plurality of water holding vessels having water inlet and water outlet couplings operatively coupled in series for series flow of water through the successive vessels. The inlet and outlet openings are located substantially below the normal water level in the vessels, for example, substantially at the mid section of the respective vessels for equalization of volume and water level in the vessels. The series coupled vessels, barrels or drums comprise a first vessel having a supply water inlet coupling for coupling to a water supply and a last vessel or drum with a treated supply water outlet coupling to treated water supply water pump and pressurized treated water storage tank. Each vessel or drum is assembled to constitute a diffused bubble aeration stage having a spiral coil air diffuser arranged near the bottom of the vessel but spaced from the bottom of the vessel or drum for delivering diffuse low pressure air bubbles for stripping and purging volatile contaminants from supply water in the vessel. Each vessel or drum is formed with air inlet and outlet couplings with air inlet and outlet couplings and lines operatively coupled in parallel for parallel flow of diffused air through the water in the vessels or drums. The air outlet coupling at the top of each vessel vents the contaminant laden air. The drums or vessels comprise multiple stages for staged bubble aeration and staged flow or plug flow of supply water passing through the stages. The volume capacity of the drums is selected for residence time of supply water in the multiple stages adequate for staged aeration stripping and removal of volatile contaminants to a selected limit without substantial mixing between stages during aeration and while meeting current demand for supply water.
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Lowry Jerry D.
Lowry Sylvia B.
Chiesa Richard L.
Kane, Jr. Daniel H.
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