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  2. Extended aeration - Wikipedia

    en.wikipedia.org/wiki/Extended_aeration

    Extended aeration agitates all incoming waste in the sludge from a single clarifier. The combined sludge starts with a higher concentration of inert solids than typical secondary sludge and the longer mixing time required for digestion of primary solids in addition to dissolved organics produces aged sludge requiring greater mixing energy input per unit of waste oxidized.

  3. Consumer Reports: Best upright vacuums of 2022 - AOL

    www.aol.com/news/consumer-reports-best-upright...

    Dyson Ball Animal 2 $499.99 at Amazon. Dyson Ball Animal 2 $499.00 at Home Depot. Dyson Ball Animal 2 $499.00 at Abt. Kenmore Pet Friendly Cross-Over DU3017. CR's take: A recent addition to our ...

  4. Water aeration - Wikipedia

    en.wikipedia.org/wiki/Water_aeration

    Fine bubble aeration is an efficient technique of aeration in terms of oxygen transfer due to the large collective surface area of its bubbles. Fine bubble aeration is an efficient way to transfer oxygen to a water body. [8] A compressor on shore pumps air through a hose, which is connected to an underwater aeration unit.

  5. Aeration turbine - Wikipedia

    en.wikipedia.org/wiki/Aeration_Turbine

    Aeration turbines are more and more entering industry because of their significantly higher efficiency and reduced size of used gear compared to other methods of aeration. This means less investment into process infrastructure and substantial savings to both the overall cost but foremost running cost for electricity. [citation needed]

  6. Consumer Reports - Wikipedia

    en.wikipedia.org/wiki/Consumer_Reports

    Consumer Reports publishes reviews of its business partner and recommends it in at least one case. [27] CR had a similar relationship with BizRate at one time [ 28 ] and has had relationships with other companies including Amazon.com , [ 29 ] Yahoo! , [ 30 ] The Wall Street Journal , The Washington Post , [ 31 ] BillShrink, [ 32 ] and Decide ...

  7. Aerobic treatment system - Wikipedia

    en.wikipedia.org/wiki/Aerobic_treatment_system

    The suspension and aeration are typically provided by an air pump, which pumps air through the aeration chamber, providing a constant stirring of the wastewater in addition to the oxygenation. A medium to promote fixed film bacterial growth may be added to some systems designed to handle higher than normal levels of biomass in the wastewater. [1]

  8. Best Gas Grills of 2022, according to Consumer Reports - AOL

    www.aol.com/news/best-gas-grills-2022-according...

    Nexgrill Deluxe 720-0896B (Home Depot) $449.00 at Home Depot. Nexgrill Deluxe 720-0896B (Home Depot) $652.55 at Walmart. Best Large Gas Grills Monument Grills 77352

  9. Airlift pump - Wikipedia

    en.wikipedia.org/wiki/Airlift_pump

    This is a dramatic disadvantage in some parts of a small wastewater treatment plant, such as the aerator. [5] the suction is limited. this pumping system is suitable only if the head is relatively low. If one wants to obtain a high head, one has to choose a conventional pumping system. because of the principle, air (oxygen) dissolves in the liquid.

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