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  2. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Activated carbon adsorbs toxins on the extended porous surface of the carbon. It cannot be reactivated by boiling in water. The adsorption of activated carbon can be restored by thermal regeneration at temperatures of 500–900 °C (932–1,652 °F), [11] electrochemical regeneration, ultrasound, or other industrial processes. For the aquarist ...

  3. Algae scrubber - Wikipedia

    en.wikipedia.org/wiki/Algae_scrubber

    Periodic removal of the algae that has grown inside of an algae scrubber removes nutrients (ammonia, nitrate, phosphate) from the aquarium water, thus providing the needed filtration. An algae scrubber is a water filtering device which uses light to grow algae; in this process, undesirable chemicals are removed from the water. [1]

  4. Berlin Method - Wikipedia

    en.wikipedia.org/wiki/Berlin_Method

    As an added measure, a protein skimmer is used to remove some of the dissolved organic compounds before they break down into ammonia, although skimmers do not remove ammonia from fish urea. The typical rule of thumb is to use from 1-2 lb (0.45 to 0.9 kg) of live rock per gallon (US) (3.7 liters) of aquarium water depending on the density of the ...

  5. Deep sand bed - Wikipedia

    en.wikipedia.org/wiki/Deep_sand_bed

    A deep sand bed is [1] a filtration method used in some saltwater aquariums and some freshwater aquariums. A deep sand bed, similar to the Berlin Method , is designed to cultivate anaerobic bacteria in the bottom layers of sand , converting nitrate to nitrogen gas to remove toxic nitrates.

  6. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    Point-of-use filters for home use include granular-activated carbon filters used for carbon filtering, depth filter, metallic alloy filters, microporous ceramic filters, carbon block resin, microfiltration and ultrafiltration membranes. Some filters use more than one filtration method. An example of this is a multi-barrier system.

  7. 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 ...

  8. Des Moines Water Works asks residents not to water lawns due ...

    www.aol.com/des-moines-water-works-asks...

    Des Moines Water Works its asking its 600,000 customers to not water their lawns, saying it will be unable to meet federal limits on nitrate levels with rising concentrations in the Des Moines and ...

  9. Biofilter - Wikipedia

    en.wikipedia.org/wiki/Biofilter

    In this context, a biofilter located after a septic tank constitutes a robust process able to sustain the variability observed without compromising the treatment performance. In anaerobic wastewater treatment facilities, biogas is fed through a bio-scrubber and “scrubbed” with activated sludge liquid from an aeration tank. [ 20 ]

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