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  2. Waste stabilization pond - Wikipedia

    en.wikipedia.org/wiki/Waste_stabilization_pond

    The second type of pond, facultative stabilization ponds, sustain an aerobic surface habitat above an anaerobic benthic habitat. [12] Maturation ponds offer aerobic conditions throughout, from the surface to the bottom. The main configurations of pond systems are: [4] [13] Facultative pond only; Anaerobic pond followed by a facultative pond;

  3. 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] There are many other aerobic biological processes for treatment of wastewaters, for example activated sludge, trickling filters, rotating biological contactors ...

  4. Aerobic treatment system - Wikipedia

    en.wikipedia.org/wiki/Aerobic_treatment_system

    Aerobic treatment system. An aerobic treatment system (ATS), often called an aerobic septic system, is a small scale sewage treatment system similar to a septic tank system, but which uses an aerobic process for digestion rather than just the anaerobic process used in septic systems. These systems are commonly found in rural areas where public ...

  5. Facultative lagoon - Wikipedia

    en.wikipedia.org/wiki/Facultative_lagoon

    Facultative lagoon (polishing pond) providing tertiary treatment after a constructed wetland in Hamburg-Allermöhe, Germany. Overflow from the facultative lagoon may be routed through one or more polishing ponds supporting lower populations of anaerobic micro-organisms and a higher proportion of aerobic organisms adapted to survival in lower concentrations of organic material.

  6. Aerobic digestion - Wikipedia

    en.wikipedia.org/wiki/Aerobic_digestion

    Aerobic digestion. Aerobic digestion is a process in sewage treatment designed to reduce the volume of sewage sludge and make it suitable [1] for subsequent use. [2] More recently, technology has been developed that allows the treatment and reduction of other [3] organic waste, such as food, cardboard and horticultural waste.

  7. Activated sludge - Wikipedia

    en.wikipedia.org/wiki/Activated_sludge

    The white bubbles are due to the diffused air aeration system. The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa. It is one of several biological wastewater treatment alternatives in secondary ...

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

    www.aol.com/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.

  9. Anaerobic lagoon - Wikipedia

    en.wikipedia.org/wiki/Anaerobic_lagoon

    Anaerobic lagoon. An anaerobic lagoon or manure lagoon is a man-made outdoor earthen basin filled with animal waste that undergoes anaerobic respiration as part of a system designed to manage and treat refuse created by concentrated animal feeding operations (CAFOs). Anaerobic lagoons are created from a manure slurry, which is washed out from ...

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