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- Info
Septic system efficiency: Parallel and serial methods for distributing effluent
| Author: |
Mote, C.R.; Mucke, F.A.; Allison, J.S. |
| Date: |
1990 |
| Periodical: |
Journal of Environmental Health |
| Abstract: |
Parallel and serial methods of distributing septic tank effluent were compared using representative soil columns. Effluent was applied to each column for a period of 63 weeks. Weekly samples of renovated effluent were evaluated for volume, COD, nitrogen, phosphorus and fecal coliform content Although both methods of distribution allowed the soil to adequately transmit the effluent, parallel distribution increased renovation efficiency. Discharges of poor quality effluent corresponded with periodic high water-discharge-rate episodes observed only for serial-loaded columns. These episodes and the associated reduction in renovation efficiency suggest that filter fields with serial distribution have greater potential for polluting the groundwater than do filter fields with parallel distribution. |
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