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  2. Gravity sewer - Wikipedia

    en.wikipedia.org/wiki/Gravity_sewer

    A gravity sewer is a conduit utilizing the energy resulting from a difference in elevation to remove unwanted water. The term sewer implies removal of sewage or surface runoff rather than water intended for use; [1] and the term gravity excludes water movement induced through force mains or vacuum sewers. Most sewers are gravity sewers because ...

  3. Pressure sewer - Wikipedia

    en.wikipedia.org/wiki/Pressure_sewer

    The discharge pipe may be as small as 50 mm diameter carrying sewage at very high flow rates. [2] Pressure sewers are also used to collect the discharge from septic tanks and discharge this into the local gravity sewer to protect local ground water from contamination. [3]

  4. Sewerage - Wikipedia

    en.wikipedia.org/wiki/Sewerage

    It is the system of pipes, chambers, manholes or inspection chamber, etc. that conveys the sewage or storm water. In many cities, sewage (municipal wastewater or municipal sewage) is carried together with stormwater, in a combined sewer system, to a sewage treatment plant.

  5. Hazen–Williams equation - Wikipedia

    en.wikipedia.org/wiki/Hazen–Williams_equation

    The Hazen–Williams equation is an empirical relationship that relates the flow of water in a pipe with the physical properties of the pipe and the pressure drop caused by friction. It is used in the design of water pipe systems [ 1 ] such as fire sprinkler systems , [ 2 ] water supply networks , and irrigation systems.

  6. Sewage treatment - Wikipedia

    en.wikipedia.org/wiki/Sewage_treatment

    It is the system of pipes, chambers, manholes or inspection chamber, etc. that conveys the sewage or storm water. In many cities, sewage (municipal wastewater or municipal sewage) is carried together with stormwater, in a combined sewer system, to a sewage treatment plant.

  7. Vitrified clay pipe - Wikipedia

    en.wikipedia.org/wiki/Vitrified_clay_pipe

    As Sanitary Sewer Overflows (SSOs) have become an area of concern for the US EPA and thus a very large potential liability for municipalities, cleaning sewers for condition assessment and maintenance has become a critical factor in system design. Flexible thermoplastic pipe limits the tools available for this cleaning as they are more easily ...

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