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  2. Onsite sewage facility - Wikipedia

    en.wikipedia.org/wiki/Onsite_sewage_facility

    A septic tank being installed. The next step is to plug it to the intake and outtake pipes and backfill it with soil. Engineered facilities that use water suspension to transport solids (private septic systems and municipal facilities) typically form a floating layer in their primary settling tank, consisting of low-density liquids such as oils ...

  3. Septic tank - Wikipedia

    en.wikipedia.org/wiki/Septic_tank

    Schematic of a septic tank [2] Septic tank and septic drain field. A septic tank consists of one or more concrete or plastic tanks of between 4,500 and 7,500 litres (1,000 and 2,000 gallons); one end is connected to an inlet wastewater pipe and the other to a septic drain field. Generally these pipe connections are made with a T pipe, allowing ...

  4. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  5. Sanitary sewer - Wikipedia

    en.wikipedia.org/wiki/Sanitary_sewer

    Pipelines range in size from pipes of 125 millimetres (4.9 in) in diameter up to 280 millimetres (11 in) in diameter. Vacuum sewer systems use differential atmospheric pressure to move the liquid to a central vacuum station. [10]

  6. Fibre-reinforced plastic tanks and vessels - Wikipedia

    en.wikipedia.org/wiki/Fibre-reinforced_plastic...

    Tanks smaller than 7,500 liters (2,000 gallons) are easily manufactured out of cheaper materials, such as HDPE or PVC. Tanks larger than four meters are generally limited by shipping constraints, and the economics suggest a concrete or steel tank fabricated at the tank's location.

  7. EN 12566 - Wikipedia

    en.wikipedia.org/wiki/EN_12566

    EN 12566-3: "Part 3: Packaged and/or site assembled domestic wastewater treatment plants" specifies the requirements and test methods used to evaluate packaged wastewater treatment plants which are required to treat sewage to a predetermined standard; EN 12566-4: "Part 4: Septic tanks assembled in situ from prefabricated kits" is an execution ...

  8. Effluent sewer - Wikipedia

    en.wikipedia.org/wiki/Effluent_sewer

    If there is a suitable septic tank in place, pumping the effluent from the tank is the lowest cost option for initial costs. Whether the septic tank is the lowest cost option over time depends on the cost of electricity in the area, how often the tank must be emptied and how much it costs to have the solids pumped out of the tank.

  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 ]

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