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2. Automated vacuum collection - Wikipedia

   en.wikipedia.org/wiki/Automated_Vacuum_Collection

   In Bergen, Norway, this system resulted in a 29% increase in plastic recycling, and an 85% decrease in non-recyclable waste, plus a $2 million saving in waste collection costs. [ 5 ] These systems also decrease the risk of fire [ 5 ] and prevent animals from accessing waste.

3. Sanitary sewer - Wikipedia

   en.wikipedia.org/wiki/Sanitary_sewer

   The pump may discharge to another gravity sewer or directly to a treatment plant. [6] Force mains are typically constructed of welded steel or HDPE jointed to resist pressures within the pipe. Force mains are substantially different from pressure sewers which serve individual properties or groups of properties and provide a means of injecting ...

4. Vacuum sewer - Wikipedia

   en.wikipedia.org/wiki/Vacuum_sewer

   Vacuum technology is based on differential air pressure. Rotary vane vacuum pumps generate an operation pressure of -0.4 to -0.6 bar at the vacuum station, which is also the only element of the vacuum sewerage system that must be supplied with electricity. Interface valves are installed inside the children collection chambers. They work ...

5. 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.

6. Sanitary engineering - Wikipedia

   en.wikipedia.org/wiki/Sanitary_engineering

   An example of a wastewater treatment system. Sanitary engineering, also known as public health engineering or wastewater engineering, is the application of engineering methods to improve sanitation of human communities, primarily by providing the removal and disposal of human waste, and in addition to the supply of safe potable water.

7. Pumping station - Wikipedia

   en.wikipedia.org/wiki/Pumping_station

   In this configuration pumps are installed below ground level on the base of the dry well so that their inlets are below water level on pump start, priming the pump and also maximising the available NPSH. Although nominally isolated from the sewage in the wet well, dry wells are underground, confined spaces and require appropriate precautions ...