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  2. Activated carbon - Wikipedia

    en.wikipedia.org/wiki/Activated_carbon

    Activated carbon. Activated carbon, also called activated charcoal, is a form of carbon commonly used to filter contaminants from water and air, among many other uses. It is processed (activated) to have small, low-volume pores that greatly increase the surface area [1] [2] available for adsorption or chemical reactions [3] that can be thought of as a microscopic "sponge" structure (adsorption ...

  3. Powdered activated carbon treatment - Wikipedia

    en.wikipedia.org/wiki/Powdered_activated_carbon...

    Powdered Activated Carbon Treatment (PACT) is a wastewater technology in which powdered activated carbon [1] [2] is added to an anaerobic or aerobic treatment system. [3] The carbon in the biological treatment process adsorbs recalcitrant compounds that are not readily biodegradable, thereby reducing the chemical oxygen demand of the wastewater and removing toxins. [4]

  4. Sand filter - Wikipedia

    en.wikipedia.org/wiki/Sand_filter

    Where taste and odor may be a problem (organoleptic impacts), the sand filter may include a layer of activated carbon to remove such taste and odor. Sand filters become clogged with floc or bioclogged after a period in use. Slow sand filters are then scraped (see above) while rapid sand filters are backwashed or pressure washed to remove the floc.

  5. Carbon filtering - Wikipedia

    en.wikipedia.org/wiki/Carbon_filtering

    Carbon filtering is commonly used for water purification, air filtering and industrial gas processing, for example the removal of siloxanes and hydrogen sulfide from biogas. It is also used in a number of other applications, including respirator masks, the purification of sugarcane , some methods of coffee decaffeination , and in the recovery ...

  6. Electrochemical regeneration - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_regeneration

    In waste water treatment, the most commonly used adsorbent is granular activated carbon (GAC), often used as to treat both liquid and gas phase volatile organic compounds and organic pollutants. [ 1 ] [ 2 ] Activated carbon beds vary in lifetime depending on the concentration of the pollutant(s) being removed, their associated adsorption ...

  7. Biofilter - Wikipedia

    en.wikipedia.org/wiki/Biofilter

    Biofiltration is a pollution control technique using a bioreactor containing living material to capture and biologically degrade pollutants. Common uses include processing waste water, capturing harmful chemicals or silt from surface runoff, and microbiotic oxidation of contaminants in air. Industrial biofiltration can be classified as the ...

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