Septic Effluent

The septic tank effluent is allowed to flow to the drainfield by gravity or is dosed by pump or siphon. The effluent enters the soil and is treated as it percolates to the groundwater.

The soil acts as biological filter to remove nearly all harmful substances including disease-causing bacteria and viruses, toxic organics and other undesirable wastewater constituents remaining in the septic tank effluent.

In addition to acting as a sedimentation chamber and providing storage for the sludge and scum, the septic tank also digests or breaks down the waste solids. Micro-organisms that thrive without oxygen feed on the solids to reduce the volume of sludge and scum.

In the process, carbon dioxide, hydrogen sulfide and other gases are produced which must be vented from the tank through the plumbing vent on the roof.

Only about 40% of the sludge and scum volume can be reduced in this manner, so the tank must be pumped regularly to remove the accumulated solids. If not done, the tank will fill with sludge and the solids will be washed out into the drainfield where they will quickly clog the soil.



Previous Article : Failure Septic System - - Next Article : Find Septic System

Featured Articles
Providing Quality Service...Guaranteed In the Greater Austin Area of Travis, Hays, Williamson, Burnet, & Bastrop Counties , Hudson Bend, Wells Branch, Shady Hollow, Buda, Driftwood, San Marcos, Bartlett, Cedar Park, Georgetown, Misc Locations, Bell County.
Call (512) 338-1804 for fast, dependable service.
Aerobic Treatment Unit First, please understand that the State has clearly stated it is the owner's responsibility to operate the aerobic treatment unit in compliance with all regulations...
Aerobic Septic System? Why do so many customers end up dissatisfied with their septic systems?  We feel it starts with nobody asking or even considering the owner's opinion before...
Pumping Frequencies The table below provides an estimate of pumping frequency in years, based on the size of the first tank in gallons, and the number of...
  • Septic Tank All septic systems consist of two parts: the septic tank and the soil absorption system. Septic tanks with...
  • System Repair We find that educated and environmentally conscious consumers generally end up being our best customers. There is so...
  • Compare Septic System The aerobic wastewater treatment plant is designed for the treatment of domestic wastewater and nothing else should go...
  • Septic Tank Covers Be absolutely certain that the covers and clean out access covers over the septic tank are secure and...
  • The Best Septic System What is the best OSSF on the market?The one that is getting proper service! Even the best equipment...