Liquid purification or separation – Processes – Including geographic feature
Patent
1986-04-03
1988-02-09
Wyse, Tom
Liquid purification or separation
Processes
Including geographic feature
210758, 210170, 210199, 2102422, 261 77, 261124, B01D 700
Patent
active
047240865
ABSTRACT:
An apparatus for conditioning stratified water bodies having epilimnion, metalimnion and hypolimnion layers is disclosed comprising a reservoir for containing water so as to define a gas-liquid interface, at least one upwelling conduit adapted for generally vertical disposition within the water body and having an upper discharge end fluidly connected to the reservoir and a plurality of intake ports longitudinally spaced along the conduit so as to afford fluid communication with predetermined depth levels of the epilimnion, metalimnion, and hypolimnion layers of the water body, flow controllers for selectively alternately opening and closing off the intake ports of the upwelling conduit, at least one return conduit adapted for generally vertical disposition within the water body and having an upper inlet end fluidly connected to the reservoir and a plurality of discharge ports longitudinally spaced along the return conduit so as to afford fluid communication with predetermined depth levels of the epilimnion, metalimnion, and hypolimnion layers of the water body, flow controllers for selectively alternately opening and closing off the discharge ports, and a pump assembly for moving water from the water body through the open inlet ports, through the upwelling conduit to the reservoir, through the return conduit and out the open discharge ports of the return conduit. A method for manipulating the thermal/density structure and oxygen content of a body of water having epilimnion, metalimnion and hypolimnion layers with a water circulating apparatus having upwelling and return conduits extending through the layers is also disclosed comprising the steps of selectively drawing water from at least one of any of the layers through the upwelling conduits and forming at least one new induced isotherm at a selected depth within the layers by controllably injecting the drawn water from the return conduit into the water body at the selected depth to form a barrier to upward diffusive transport of nutrients.
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