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  2. Brine - Wikipedia

    en.wikipedia.org/wiki/Brine

    Using one of several classification of groundwater based on total dissolved solids (TDS), brine is water containing more than 100,000 mg/L TDS. [4] Brine is commonly produced during well completion operations, particularly after the hydraulic fracturing of a well.

  3. Mixed liquor suspended solids - Wikipedia

    en.wikipedia.org/wiki/Mixed_liquor_suspended_solids

    Mixed liquor suspended solids (MLSS) is the concentration of suspended solids, in an aeration tank during the activated sludge process, which occurs during the treatment of waste water. The units MLSS is primarily measured in milligram per litre (mg/L), but for activated sludge its mostly measured in gram per litre [g/L] which is equal to ...

  4. Talk:Total dissolved solids - Wikipedia

    en.wikipedia.org/wiki/Talk:Total_dissolved_solids

    A fact from Total dissolved solids appeared on Wikipedia's Main Page in the Did you know column on 2 July 2006. The text of the entry was as follows: Did you know... that total dissolved solids, a class of water pollutants, is useful as an indicator of aquatic biota health, yet harmful to the plumbing of aquaria and hot tubs?

  5. Bicarbonate - Wikipedia

    en.wikipedia.org/wiki/Bicarbonate

    Bicarbonate is the dominant form of dissolved inorganic carbon in sea water, [9] and in most fresh waters. As such it is an important sink in the carbon cycle. Some plants like Chara utilize carbonate and produce calcium carbonate (CaCO 3) as result of biological metabolism. [10]

  6. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    When an acid is dissolved in water, the pH will be less than 7, while a base, or alkali, will have a pH greater than 7. A strong acid, such as hydrochloric acid , at concentration 1 mol dm −3 has a pH of 0, while a strong alkali like sodium hydroxide , at the same concentration, has a pH of 14.

  7. Biochemical oxygen demand - Wikipedia

    en.wikipedia.org/wiki/Biochemical_oxygen_demand

    BOD test bottles at the laboratory of a wastewater treatment plant. Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period.

  8. Secondary treatment - Wikipedia

    en.wikipedia.org/wiki/Secondary_treatment

    Nitrogenous dissolved solids (amino acids, ammonia, etc.) are similarly converted to biological floc or oxidized by the floc to nitrites, nitrates, and, in some processes, to nitrogen gas through denitrification. While denitrification is encouraged in some treatment processes, denitrification often impairs the settling of the floc causing poor ...

  9. Clarifier - Wikipedia

    en.wikipedia.org/wiki/Clarifier

    This can cause the resuspension of particles by gases and the release of dissolved nutrients throughout the water fluid, reducing the effectiveness of the clarifier. Major health issues and problems can also occur further down the track of the water purification system, or the health of the fish found downstream of the clarifier may be hindered.

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