| What is an On-site Sewage System?
 Also
known as a septic system, OSS are designed to help prevent the spread of disease
and illness by collecting, treating, and disposing of wastewater from a home or
business into the native soils nearby. An OSS typically consists of a septic
tank and a drainfield. Alternative systems may be required in areas where the
soil depth and type do not allow a conventional gravity fed system. These types
are: - Pressure
Distribution
- Sand
Filters and Sand-lined Drainfield Trenches
- Aerobic
Treatment Units
- Others,
such as the Glendon Biofilters and Drip Irrigation.
The
Septic Tank
Typically, the septic tank is a large container made
of concrete, fiberglass, or polyethylene which is buried in the ground. All of
the wastewater from a home or business is routed to the septic tank for "primary
treatment", which is a filtering process whereby heavy solids are allowed
to settle and floating solids are trapped by the baffles within the tank. The
result is clarified liquid called "effluent" which is more easily absorbed
by the soil in the drainfield. Adequate primary treatment is essential to protect
drainfields and allow them to function properly. The
Drainfield
A drainfield is made up of a network of pipes and/or
other materials placed in trenches to distribute effluent into the soil. The size
and type depends on the estimated daily wastewater quantity and soil type. The
drainfield provides the final treatment and disposal of effluent in conjunction
with the soils. There should be a designated backup replacement area for future
use in case the existing drainfield fails. Drainfields rely on unsturated and
uncompacted soils to function properly.  Alternative
Systems
- Pressure
Distribution
This sytems consists of a septic tank, pump tank, and a drainfield. The pump tank
times the doses of effluent that are distributed to the drain field, providing
a higher level of treatment to effluent as compared to a simple gravity system.
It protects the drainfield from being overused and saturated. - Sand
Filters and Sand-Lined Trenches
 The
Sand Filter System consists of a septic tank, pump tank, sand filter, and drainfield.
This system uses pressure distribution technology through special sand to achieve
a very high level of effluent treatment before effluent is distributed to the
drainfield. It is typically used where site conditions require a higher level
of effluent treatment to protect wells, surface waters, or shallow ground waters.
- Aerobic
Treatment Unit
This system uses a special Aerobic Treatment Unit
which injects air into the effluent to speed up the normal waste water treatment
process before it is sent to the drainfield. It is typically used where site conditions
require a high level of effluent treatment. - The
Glendon System
This alternative system consists of a septic tank,
a pump tank, and a containerized drainfeld system. Layers of mineral filters treat
sewage effluent before final disposal in the surrounding soil. Time dosing is
utilized like the Pressure Distribution System and Sand Filter System. Maintenance
of Your Septic System
Replacing your system is very costly. Extend
the life of your system by taking care of it. |
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On-Site
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