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  2. Aerated lagoon - Wikipedia

    en.wikipedia.org/wiki/Aerated_lagoon

    An aerated lagoon (or aerated pond) is a simple wastewater treatment system consisting of a pond with artificial aeration to promote the biological oxidation of wastewaters. [1] [2] [3] [4]

  3. Windmill - Wikipedia

    en.wikipedia.org/wiki/Windmill

    The windmills at Kinderdijk in the village of Kinderdijk, Netherlands is a UNESCO World Heritage Site. A windmill is a structure that converts wind power into rotational energy using vanes called sails or blades, by tradition specifically to mill grain (), but in some parts of the English-speaking world, the term has also been extended to encompass windpumps, wind turbines, and other applications.

  4. List of windmills in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_windmills_in_the...

    In this nation more than others, "windmill" is often used to refer to what are properly termed windpumps bringing up water for agriculture. This is at least partly due to usage by windpump builders Eclipse Windmill Company (1873) and Aermotor Windmill Company (1888, the sole surviving US "windmill" manufacturer [ 1 ] ).

  5. Aerated static pile composting - Wikipedia

    en.wikipedia.org/wiki/Aerated_static_pile_composting

    The blended admixture is usually placed on perforated piping, providing air circulation for controlled aeration. It may be in windrows, open or covered, or in closed containers. With regard to complexity and cost, aerated systems are most commonly used by larger, professionally managed composting facilities, although the technique may range ...

  6. Saving Walden Pond: How a treasured landmark is under threat

    www.aol.com/news/saving-walden-pond-treasured...

    A half-an-hour drive from Boston, Massachusetts, in the town of Concord, sits one of the most revered literary landscapes in the world: the 2,680-acre Walden Woods and Walden Pond State Reservation.

  7. Dempsters - Wikipedia

    en.wikipedia.org/wiki/Dempsters

    Dempsters was a privately held American company that over time produced submersible pumps, windmills and wind energy systems, water systems, recycling trailers, fertilizer equipment, and accessories. Originally named the Dempster Company and then the Dempster Wind Mill Company, it was incorporated under the laws of Nebraska in 1886 as Dempster ...

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