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  2. Effluent sewer - Wikipedia

    en.wikipedia.org/wiki/Effluent_sewer

    Effluent sewer systems, also called septic tank effluent gravity (STEG), solids-free sewer (SFS), or septic tank effluent drainage (STED) systems, have septic tanks that collect sewage from residences and businesses, and the liquid fraction of sewage that comes out of the tank is conveyed to a downstream receiving body such as either a ...

  3. Septic tank - Wikipedia

    en.wikipedia.org/wiki/Septic_tank

    A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]

  4. Manila Water - Wikipedia

    en.wikipedia.org/wiki/Manila_Water

    Desludging trucks of Manila Water in 2012. Manila Water Company, a publicly listed company and a subsidiary of Ayala Corporation, holds the exclusive right to provide water and used water services to over six million people in the Manila Water Concession, particularly the East Zone of Metro Manila and Rizal Province consisting of 23 cities and municipalities.

  5. Wastewater treatment - Wikipedia

    en.wikipedia.org/wiki/Wastewater_treatment

    These systems include septic tanks connected to drain fields, on-site sewage systems (OSS), vermifilter systems and many more. On the other hand, advanced and relatively expensive sewage treatment plants may include tertiary treatment with disinfection and possibly even a fourth treatment stage to remove micropollutants. [6]

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Water supply and sanitation in the Philippines - Wikipedia

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

    Agricultural water management in the Philippines is primarily focused on irrigation. The country has 3.126 million hectares of irrigable land, 50% (1.567 million hectares) of which already has irrigation facilities. 50% of irrigated areas are developed and operated by the government through the National Irrigation System (NIS). 36% is developed by the government and operated by irrigators ...

  8. Sewage treatment - Wikipedia

    en.wikipedia.org/wiki/Sewage_treatment

    These systems include septic tanks connected to drain fields, on-site sewage systems (OSS), vermifilter systems and many more. On the other hand, advanced and relatively expensive sewage treatment plants may include tertiary treatment with disinfection and possibly even a fourth treatment stage to remove micropollutants.

  9. Septic drain field - Wikipedia

    en.wikipedia.org/wiki/Septic_drain_field

    A septic drain field, a septic tank, and associated piping compose a septic system. The drain field typically consists of an arrangement of trenches containing perforated pipes and porous material (often gravel ) covered by a layer of soil to prevent animals (and surface runoff ) from reaching the wastewater distributed within those trenches. [ 1 ]