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A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...
Manhole access to sewer Schematic of a conventional sanitary sewer to convey blackwater and greywater from households to a centralized sewage treatment facility. [3] A manhole cover for a sanitary sewer access point. View looking down into an open manhole showing two converging sanitary sewer lines.
It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the combined sewer or sanitary sewer. Sewerage ends at the entry to a sewage treatment plant or at the point of discharge into the environment. It is the system of pipes, chambers, manholes or inspection chamber, etc. that ...
Sanitary manhole This page was last edited on 12 November 2024, at 15:35 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ...
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The pumping station may be called a lift station if the pump merely discharges into a nearby gravity manhole. [4] From here the cycle starts all over again until the sewage reaches its point of destination—usually a treatment plant. By this method, pumping stations are used to move waste to higher elevations.
Combined sewer outflow into the Anacostia River in Washington, D.C. Ratcliff Beach CSO discharges into the River Thames in London [7]. These relief structures, called "storm-water regulators" (in American English - or "combined sewer overflows" in British English) are constructed in combined sewer systems to divert flows in excess of the peak design flow of the sewage treatment plant. [6]
Gravity sewer flow as seen looking down into an open sanitary manhole. 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 ...