A reservoir evaporation system for evaporating fluid from an open reservoir of effluent containing a contaminant includes a fluid evaporator, an air pump, and an air supply conduit functionally connecting the fluid evaporator with the air pump. The fluid evaporator includes a vessel adapted to be po
A reservoir evaporation system for evaporating fluid from an open reservoir of effluent containing a contaminant includes a fluid evaporator, an air pump, and an air supply conduit functionally connecting the fluid evaporator with the air pump. The fluid evaporator includes a vessel adapted to be positioned in an operative position partially submerged on the top surface of the effluent in the reservoir with a lower chamber submerged in the effluent and an upper chamber extending above the top surface of the effluent. In operation, air from the air pump mixes with the effluent inside the fluid evaporator and subsequently is discharged through exhaust openings. A fluid discharge pipe can also simultaneously discharge aerated effluent back down into the reservoir. Fluid is thereby separated from the effluent in the lower chamber by evaporation in a controlled manner that minimizes spread of contaminants to surrounding environments by wind.
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1. A reservoir evaporation system for evaporating fluid from an open reservoir of effluent containing a fluid and a contaminant, the system comprising: a fluid evaporator comprising a vessel with an upper chamber and a lower chamber, the vessel adapted to float in an operative position partially sub
1. A reservoir evaporation system for evaporating fluid from an open reservoir of effluent containing a fluid and a contaminant, the system comprising: a fluid evaporator comprising a vessel with an upper chamber and a lower chamber, the vessel adapted to float in an operative position partially submerged on the top surface of the effluent in the reservoir with the lower chamber submerged in the effluent and the upper chamber extending above a top surface of the effluent, a first opening into a lower portion of the lower chamber to allow the effluent to enter the chamber, and a second opening into the upper chamber disposed to be above the top surface of the effluent and in communication with the lower chamber;an air pump; andan air supply conduit connecting the fluid evaporator with the air pump, the air supply conduit having an outlet arranged to discharge forced air into the lower portion of the lower chamber;wherein when the fluid evaporator is in the operative position, air from the air pump can be injected into the effluent in the lower chamber and subsequently travel through the upper chamber to be discharged from the vessel through an exhaust opening in an outer wall of the upper chamber, the air exiting the exhaust opening downwardly, towards the lower chamber and towards the effluent in the reservoir, whereby fluid from the effluent in the lower chamber can be separated from the contaminant by evaporation. 2. The system of claim 1, the fluid evaporator further comprising a water discharge conduit extending downwardly from the vessel, the water discharge conduit having a first end located in the vessel laterally adjacent the lower chamber and separated by a weir from the lower chamber, the weir located to allow fluid to flow thereover from the lower chamber to the first end, wherein when in the operative position aerated effluent can flow from the lower chamber into the water discharge conduit over the weir, and through the water discharge conduit to a discharge opening in the fluid reservoir below the top surface of the contaminated fluid, whereby aerated effluent from the lower chamber can be discharged into the reservoir below the top surface. 3. The system of claim 1, wherein a flotation device is secured to the vessel and arranged to cause the vessel to float in the operative position. 4. The system of claim 1, wherein the air pump comprises a fan. 5. The system of claim 1, wherein the air pump is remote from the fluid evaporator. 6. The system of claim 5, wherein the air supply conduit comprises a tube connected to the air pump and the fluid evaporator, wherein the tube is made of a plastic material, and further comprising an internal combustion engine arranged to power the air pump, wherein heated exhaust gases from the internal combustion engine are combined with air from the air pump at a junction fitting adapted to rapidly mix the heated exhaust gases with the air from the air pump and cool the exhaust gases to a temperature that will not be harmful to the plastic material of the tube. 7. The system of claim 5, further comprising a second fluid evaporator identical to the first fluid evaporator, the second fluid evaporator being connected with the air pump by a second air supply conduit. 8. The system of claim 7, wherein the first fluid evaporator and the second fluid evaporator are connected in series with the air pump. 9. The system of claim 7, wherein the first fluid evaporator and the second fluid evaporator are connected in parallel with the air pump. 10. The system of claim 1, further comprising a solar energy collector adapted to heat the vessel and/or a solar thermal energy collector arranged to heat air in the air supply conduit upstream from the fluid evaporator. 11. The system of claim 1, further comprising a second fluid evaporator connected in series with the first fluid evaporator by a second conduit, wherein exhaust gas from the first fluid evaporator is used as input gas into the second fluid evaporator. 12. The system of claim 1, further comprising: an electric motor arranged to drive the air pump;electrical generator arranged to power the electric motor, andan engine arranged to drive the electrical generator,wherein waste heat from exhaust from the engine is mixed into the forced air supplied to the fluid evaporator. 13. The system of claim 1, wherein the upper chamber and the lower chamber are stacked sequentially and are coaxially aligned with the air supply conduit. 14. The system of claim 13, wherein the upper chamber is wider than the lower chamber. 15. The system of claim 14, wherein the upper chamber and the lower chamber are cylindrical in shape. 16. A method of evaporating fluid from an open reservoir of fluid having a top surface, the method comprising the steps: floating a fluid evaporator at the top surface of the fluid in a partially submerged state, the fluid evaporator comprising a vessel with an upper chamber and a lower chamber, a bottom end of the vessel submerged in the fluid with the lower chamber submerged in the fluid, and a top end of the vessel disposed above the top surface of the fluid with the upper chamber extending above the top surface of the fluid, a first opening into a lower portion of the lower chamber to allow the fluid to enter the lower chamber, and a second opening into the upper chamber disposed above the top surface of the fluid and in communication with the lower chamber;forcing air into the fluid in the lower portion of the lower chamber through an outlet of an air supply conduit, the outlet disposed below the top surface of the fluid;aerating the fluid with the air inside the lower portion of the vessel; anddischarging the air after aerating through the upper chamber to an exhaust opening in an outer wall of the upper chamber, the air exiting the exhaust opening downwardly, towards the lower chamber and towards the effluent in the reservoir, whereby fluid in the lower chamber is evaporated in the discharged air. 17. The method of claim 16, further comprising the step of simultaneously discharging aerated fluid from the fluid evaporator through a fluid discharge conduit downwardly into the reservoir. 18. The method of claim 17, further comprising the step of anchoring the fluid evaporator to the bottom of the reservoir with the fluid discharge conduit. 19. The method of claim 16, further comprising the step of heating the vessel with a solar energy collector. 20. The method of claim 16, further comprising the step of heating the air upstream of the fluid evaporator. 21. The method of claim 20, wherein the step of heating includes adding exhaust heat from an internal combustion engine to the air. 22. The method of claim 16, wherein an air pump is located remote from the fluid evaporator, and the air is forced through the air supply conduit from the blower. 23. The method of claim 22, further comprising the steps of: floating a second said fluid evaporator on the top surface of the fluid in a partially submerged state; andforcing air with the air pump through a second air supply conduit into effluent in the lower portion of the vessel of the second fluid evaporator.
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