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  2. Wastewater treatment - Wikipedia

    en.wikipedia.org/wiki/Wastewater_treatment

    Sewage treatment plant (a type of wastewater treatment plant) in La Crosse, Wisconsin. Wastewater treatment is a process which removes and eliminates contaminants from wastewater. It thus converts it into an effluent that can be returned to the water cycle. Once back in the water cycle, the effluent creates an acceptable impact on the environment.

  3. Activated sludge - Wikipedia

    en.wikipedia.org/wiki/Activated_sludge

    Activated sludge tank at Beckton sewage treatment plant, UK.The white bubbles are due to the diffused air aeration system. The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa.

  4. List of wastewater treatment technologies - Wikipedia

    en.wikipedia.org/wiki/List_of_wastewater...

    Activated sludge model; Activated sludge systems; Adsorption/Bio-oxidation process; Advanced oxidation process; Aerated lagoon; Aerobic granular reactor

  5. Water treatment - Wikipedia

    en.wikipedia.org/wiki/Water_treatment

    Physical techniques of water/waste water treatment rely on physical phenomena to complete the removal process, rather than biological or chemical changes. [9] Most common physical techniques are: Sedimentation is one of the most important main wastewater treatment procedures. Gravity settling is a method of separating particles from a fluid.

  6. Sewage treatment - Wikipedia

    en.wikipedia.org/wiki/Sewage_treatment

    The term sewage treatment plant (STP) (or sewage treatment works) is nowadays often replaced with the term wastewater treatment plant (WWTP). [7] [8] Strictly speaking, the latter is a broader term that can also refer to industrial wastewater treatment. The terms water recycling center or water reclamation plants are also in use as synonyms.

  7. Waste management - Wikipedia

    en.wikipedia.org/wiki/Waste_management

    Wastewater from an industrial process can be converted at a treatment plant to solids and treated water for reuse. Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or ...

  8. Coagulation (water treatment) - Wikipedia

    en.wikipedia.org/wiki/Coagulation_(water_treatment)

    Coagulation-flocculation process in a water treatment system. In water treatment, coagulation and flocculation involve the addition of compounds that promote the clumping of fine floc into larger floc so that they can be more easily separated from the water. Coagulation is a chemical process that involves neutralization of charge whereas ...

  9. 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.