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  2. AOL reviewed: This smart humidifier helps me sleep better in ...

    www.aol.com/lifestyle/levoit-dual-200s-smart...

    The Levoit Duual 200S Smart Humidifier is a compact and reasonably priced mister that can help maintain comfortable humidity levels in your home.

  3. Fine bubble diffusers - Wikipedia

    en.wikipedia.org/wiki/Fine_bubble_diffusers

    The larger air release openings of a coarse bubble diffuser helps to facilitate a higher oxygen transfer rate and bacterial growth. One disadvantage of using fine bubble diffusers in activated sludge tanks is the tendency of floc (particle) clogging the small air release holes.

  4. Coarse bubble diffusers - Wikipedia

    en.wikipedia.org/wiki/Coarse_bubble_diffusers

    Coarse bubble diffusers produce 1/4 to 1/2 inch (6.4 to 13 mm) bubbles which rise rapidly from the floor of a wastewater treatment plant or sewage treatment plant tank. They are typically used in grit chambers, equalization basins, chlorine contact tanks, and aerobic digesters , and sometimes also in aeration tanks.

  5. Air freshener - Wikipedia

    en.wikipedia.org/wiki/Air_freshener

    Air fresheners from Febreze. Air fresheners are products designed to reduce unwanted odors in indoor spaces, or to introduce pleasant fragrances, or both. They typically emit fragrance to mask odors but may use other methods of action such as absorbing, bonding to, or chemically altering compounds in the air that produce smells, killing organisms that produce smells, or disrupting the sense of ...

  6. The best air purifiers of 2025 - AOL

    www.aol.com/lifestyle/best-air-purifiers...

    We put the best air purifiers from Lenovo, Honeywell, Winix, and more to the test to see which held up best (and actually purified the air for you). See what our product scientist has to say.

  7. Diffuser (sewage) - Wikipedia

    en.wikipedia.org/wiki/Diffuser_(sewage)

    An air diffuser or membrane diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer air and with that oxygen into the sewage or industrial wastewater. Oxygen is required by microorganisms/bacteria residents in the water to break down the pollutants.