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2. 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.

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. Sewage treatment - Wikipedia

   en.wikipedia.org/wiki/Sewage_treatment

   These basins are called primary sedimentation tanks or primary clarifiers and typically have a hydraulic retention time (HRT) of 1.5 to 2.5 hours. [7]: 398 The settled and floating materials are removed and the remaining liquid may be discharged or subjected to secondary treatment. Primary settling tanks are usually equipped with mechanically ...

5. Sanitary sewer - Wikipedia

   en.wikipedia.org/wiki/Sanitary_sewer

   Most of the solids are removed by the septic tanks, so the treatment plant can be much smaller than a typical plant. In addition, because of the vast reduction in solid waste, a pumping system, rather than a gravity system, can be used to move the wastewater. The pipes have small diameters, typically 1.5 to 4 inches (4 to 10 cm).

6. Pressure sewer - Wikipedia

   en.wikipedia.org/wiki/Pressure_sewer

   The pumping well and pump controls require expert maintenance and repair should they fail. [1] Electricity is required to power the pump and this cost would typically fall on the local house-holder. Although the pump well is usually designed to accommodate several days storage, failure of the pump or of the local electricity supply for an ...

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