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  2. 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.

  3. Biyagama Water Treatment Plant - Wikipedia

    en.wikipedia.org/wiki/Biyagama_Water_Treatment_Plant

    The Biyagama Water Treatment Plant or BWTP is a water treatment facility located at the bank of Kelani River, in Biyagama, Sri Lanka. At a daily output capacity of 160,000,000 L / d (1,900,000 L/ ks ), it is the second largest water treatment facility in the country.

  4. Category:Water supply and sanitation in Sri Lanka - Wikipedia

    en.wikipedia.org/wiki/Category:Water_supply_and...

    Pages in category "Water supply and sanitation in Sri Lanka" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes .

  5. National Water Supply and Drainage Board - Wikipedia

    en.wikipedia.org/wiki/National_Water_Supply_and...

    The National Water Supply and Drainage Board (commonly abbreviated as NWSDB) is the National Organization responsible for the provision of safe drinking water and facilitating the provision of sanitation to the people in Sri Lanka. The organization had its beginning as a subdepartment under the Public Works Department for water supply and drainage.

  6. Waste management - Wikipedia

    en.wikipedia.org/wiki/Waste_management

    Secondary sludge is sludge separated in secondary clarifiers that are used in secondary treatment bioreactors or processes using inorganic oxidizing agents. In intensive sewage treatment processes, the sludge produced needs to be removed from the liquid line on a continuous basis because the volumes of the tanks in the liquid line have ...

  7. List of government-owned companies of Sri Lanka - Wikipedia

    en.wikipedia.org/wiki/List_of_government-owned...

    Airport and Aviation Services (Sri Lanka) Limited; The Associated Newspapers of Ceylon Ltd; B.C.C. Lanka Ltd; B.O.C. Bank; CTB BUS; Lynx BUS; Building Materials Corporation Ltd

  8. List of wastewater treatment technologies - Wikipedia

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

    Sedimentation (water treatment) Septic tank; Septic tank conversion [2] Sequencing batch reactor; Sewage treatment; Skimmer (machine) Slow sand filter; Stabilization pond; Supercritical water oxidation (SCWO) Thermal hydrolysis; Treatment pond; Trickle-bed reactor; Trickling filter; Ultrafiltration; Ultraviolet disinfection; Upflow anaerobic ...

  9. 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.