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  2. History of water supply and sanitation - Wikipedia

    en.wikipedia.org/wiki/History_of_water_supply...

    The treatment of Paris sewage, though, was left to natural devices as 5,000 hectares of land were used to spread the waste out to be naturally purified. [63] Further, the lack of sewage treatment left Parisian sewage pollution to become concentrated downstream in the town of Clichy, effectively forcing residents to pack up and move elsewhere. [63]

  3. Ashbridges Bay Wastewater Treatment Plant - Wikipedia

    en.wikipedia.org/wiki/Ashbridges_Bay_Wastewater...

    The Ashbridges Bay Wastewater Treatment Plant is the city of Toronto's main sewage treatment facility, and the second largest such plant in Canada after Montreal's Jean-R. Marcotte facility. One of four plants that service the city of Toronto, it treats the wastewater produced by some 1.4 million of the city's residents and has a rated capacity ...

  4. List of largest wastewater treatment plants - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_wastewater...

    Lyuberetskiye wastewater treatment facilities [14] Moscow Russia: 1963 3 000 000 Seine Aval Wastewater Treatment Plant [15] Paris France: 1940 1 460 000 2 900 000 8 Shanghai Zhuyan I Wastewater Treatment Plant [16] Shanghai China: 2004 1 700 000 Stonecutters Island Sewage Treatment [17] Hong Kong China: 2001 2 765 000 [18] Bailonggang ...

  5. Water supply and sanitation in Saudi Arabia - Wikipedia

    en.wikipedia.org/wiki/Water_supply_and...

    Wastewater. There are 33 wastewater treatment plants with a capacity of 748 million cubic meters per year, and 15 more are under construction. Much of the treated wastewater is being reused to water green spaces in the cities (landscaping), for irrigation in agriculture and other uses. Concentrated sewage from septic tanks is collected through ...

  6. International Boundary Wastewater Treatment Plant - Wikipedia

    en.wikipedia.org/wiki/International_Boundary...

    The International Wastewater Treatment Plant was created in an effort to mitigate pollution caused by untreated sewage coming from the city of Tijuana. The U.S. paid for the majority of the treatment plant, citing the sewage runoff as an international issue. It required the cooperation of multiple governmental bodies.

  7. Secondary treatment - Wikipedia

    en.wikipedia.org/wiki/Secondary_treatment

    Secondary treatment (mostly biological wastewater treatment) is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater. [ 1 ] : 11 The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the intended disposal or reuse option.

  8. Sanitary sewer - Wikipedia

    en.wikipedia.org/wiki/Sanitary_sewer

    The decision to build a combined sewer system or two separate systems is mainly based on the need for sewage treatment and the cost of providing treatment during heavy rain events. Many cities with combined sewer systems built their systems prior to installing sewage treatment plants, and have not subsequently replaced those sewer systems. [2]

  9. Membrane bioreactor - Wikipedia

    en.wikipedia.org/wiki/Membrane_bioreactor

    Most wastewater treatment plants are operated in constant flux mode, and hence fouling phenomena are generally tracked via the variation of transmembrane pressure with time. In recent reviews covering membrane applications to bioreactors, it has been shown that, as with other membrane separation processes, membrane fouling is the most serious ...