| How Does It Work |
Three-stage treatment includes:
- Simultaneous biological aerobic and anoxic treatment
- Membrane separation
- Ozone disinfection
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Elevated, man-made soil mound is used in addition to conventional septic tank. |
Septic tank is used to separate water and solids, then releases water into a soil drain field for filtration over time. |
Ambient air is injected into septic tank, increasing natural bacterial activity within septic tank. |
| Drain Field Requirements |
Reduced or no drain field required. Can be used with failed clogged drain field to repair contamintated soil. |
Mound field must be constructed on flat land to avoid failure. Many states require a mandatory “settling period” before mound system can be used as a drain field. |
Trenches or lines need up to 36″ clearance above restrictive layers to permit percolation of soil for treatment. |
Standard or shallow drain field, typically fitted with trenches or drip tubes. |
| Advantages |
Produces clear, treated water free from fecal coliforms, nitrogen, phosphorous and other harmful contaminants. |
Similar to conventional septic, once mound field is created |
Low cost to build and maintain. |
|
| Disadvantages |
|
Many states require a “settling” period before mound may be used for drain field. Requires costly transporting of soil to create mound area. |
Prone to failures, espeically where soil is sandy and rocky or in high water table areas. |
The aerobic system generates biomass growth, which can clog the system if not maintained. |
| Average Cost |
$19,000 and up |
$30,000 – $40,000 |
$7,000 – $13,000 |
$15,000 – $20,000 |
| Maintenance |
Pumps solids annually |
Pump solids every 2-5 years |
Pump solids every 2-5 years |
Pump solids and clean filters annually. |
