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  2. 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.

  3. Sewage treatment - Wikipedia

    en.wikipedia.org/wiki/Sewage_treatment

    For activated sludge treatment plants in the United States, around 30 percent of the annual operating costs is usually required for energy. [7]: 1703 Most of this electricity is used for aeration, pumping systems and equipment for the dewatering and drying of sewage sludge. Advanced sewage treatment plants, e.g. for nutrient removal, require ...

  4. Sewage sludge treatment - Wikipedia

    en.wikipedia.org/wiki/Sewage_sludge_treatment

    Stepped multiple hearth incinerators with high residence time and fluidized bed incinerators are the most common systems used to combust wastewater sludge. Co-firing in municipal waste-to-energy plants is occasionally done, this option being less expensive assuming the facilities already exist for solid waste and there is no need for auxiliary ...

  5. Return Sludge Pumping Station, Fields Point Sewage Treatment ...

    en.wikipedia.org/wiki/Return_Sludge_Pumping...

    The Return Sludge Pumping Station, Fields Point Sewage Treatment Plant is an historic wastewater pumping station in the Field's Point Sewage Treatment Facility on Ernest Street in Providence, Rhode Island. It is a rectangular hip-roofed brick and concrete structure, located adjacent to the facility's aeration tanks, and is not readily visible ...

  6. Sewage sludge - Wikipedia

    en.wikipedia.org/wiki/Sewage_sludge

    Sewage sludge is the residual, semi-solid material that is produced as a by-product during sewage treatment of industrial or municipal wastewater. The term "septage" also refers to sludge from simple wastewater treatment but is connected to simple on-site sanitation systems, such as septic tanks.

  7. Sewer mining - Wikipedia

    en.wikipedia.org/wiki/Sewer_mining

    Sewer mining (or sewage mining) is a concept where municipal wastewater is pumped from a trunk sewer and treated on-site to accommodate a range of local, nonpotable water needs. [1] It is a strategy for combating water scarcity. It combines decentralized wastewater management and water reclamation. [1]

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