![]() Septic grinders are intended for use at residential or small commercial locations.īecause the waste is ground and pumped under pressure, these pumps can lift high distances, say from a basement floor even to a street sewer which may be uphill from the home, or to a high pressure sewer main that may be located some distance away.įor example, we inspected a summer camp community which used this force-main sewer system to move waste from buildings across a site covering several acres to a common septic system. The building sewer drain then carries this mixture by gravity (a gravity main system) or by pump pressure (a forced main) to its destination at a septic tank and drainfield system or to a municipal sewer. Sewage or Septic Grinder pumps grind the solid waste entering the system, then pump it to the building drain. (Sketch is from the Environment One Low Pressure Sewer Systems Grinder Pump catalog.) Sewage Pumping Tank bedding gravel, 6" deep of rounded pea gravel.of concrete to prevent the tank from floating up out of the ground) Concrete septic pumping tank anchor (900 pounds, or about 6 cu.Ground sewage outlet: 1 1/4" male pipe thread discharge outlet (the small diameter pipe leaving the tank at top right and passing through the foundation wall).Drain inlet gravity service line - wastewater flows into the tank by gravity from this line.of the tank to a building plumbing vent stack The sewage grinder tank must be vented either directly or through the inlet pipe and within 4 ft. Drain inlet: 4" PVC tank inlet for connection to building drains served by the pump.Electrical disconnect box for the grinder pump system. ![]()
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