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Constructed of a hub with attached paddles, these aerators are usually powered by a tractor power take-off , a gas engine, or an electric motor. They tend to be mounted on floats. Electricity forces the paddles to turn, churning the water and allowing oxygen transfer through air-water contact. [4]
A cooling pond is a man-made body of water primarily formed for the purpose of cooling heated water or to store and supply cooling water to a nearby power plant or industrial facility such as a petroleum refinery, pulp and paper mill, chemical plant, steel mill or smelter.
From January 4/5 to January 10, 1998, warm moist air from the south overriding cold air from the north produced an ice storm, leading to over 80 hours of freezing rain and drizzle. [69] [70] For days, a continuous shower of mostly freezing rain amounted to 70–110 millimetres (2.8–4.3 inches) of water equivalent of precipitation. [71]
An ice pond is a large volume of ice or snow produced by natural winter freezing. The ice is then used for cooling or air conditioning . Before refrigeration was common, ice ponds were mined by ice companies, with product transported to consumers and food businesses through much of the year.
31st Marine Expeditionary Unit (MEU) Service Support Group 31 in Leyte, Philippines (Feb. 20, 2006). Not all techniques by themselves will mitigate all hazards. Although flocculation followed by filtration has been suggested as best practice [6] this is rarely practicable without the ability to carefully control pH and settling conditions.
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The largest operating solar pond for electricity generation was the Beit HaArava pond built in Israel and operated up until 1988. It had an area of 210,000 m² and gave an electrical output of 5 MW. [3] India was the first Asian country to have established a solar pond in Bhuj, in Gujarat.