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The aeration stage and the disinfecting stage are the primary differences from a traditional septic system; in fact, an aerobic treatment system can be used as a secondary treatment for septic tank effluent. [1] These stages increase the initial cost of the aerobic system, and also the maintenance requirements over the passive septic system.
Some estimates put the cost of a new septic system at between $3,000–$9,000 for a three- to four-bedroom home, and newer technologies can land closer to $12,000–$18,000. Installation costs ...
Onsite sewage facilities (OSSF), also called septic systems, are wastewater systems designed to treat and dispose of effluent on the same property that produces the wastewater, in areas not served by public sewage infrastructure. A septic tank and drainfield combination is a fairly common type of on-site sewage facility in the Western world.
Septic tanks can be coupled with other onsite wastewater treatment units such as biofilters or aerobic systems involving artificially forced aeration. [ 3 ] The rate of accumulation of sludge—also called septage or fecal sludge —is faster than the rate of decomposition. [ 2 ]
However, the operating costs are characteristically much greater for aerobic digestion because of energy used by the blowers, pumps and motors needed to add oxygen to the process. However, recent technological advances include non-electric aerated filter systems that use natural air currents for the aeration instead of electrically operated ...
Septic tanks also have a higher capital cost if they are being installed for new homes or if the existing septic tanks must be replaced. If there is a suitable septic tank in place, pumping the effluent from the tank is the lowest cost option for initial costs.