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Subsurface Alternatives for On-Site Wastewater Disposal in the Alabama Black Belt Soil Area Jiajie He, Grad. Student, Biosystems Engin., Auburn Univ. Mark.

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Presentation on theme: "Subsurface Alternatives for On-Site Wastewater Disposal in the Alabama Black Belt Soil Area Jiajie He, Grad. Student, Biosystems Engin., Auburn Univ. Mark."— Presentation transcript:

1 Subsurface Alternatives for On-Site Wastewater Disposal in the Alabama Black Belt Soil Area Jiajie He, Grad. Student, Biosystems Engin., Auburn Univ. Mark Dougherty, Asst. Prof., Biosystems Engin., Auburn Univ. Barrett Vaughan, Asst. Prof., College of Agric. & Engin., Tuskegee Univ. Teferi Tsegaye, Assoc. Prof., Dept. of Plant & Soil Sci., Alabama A&M Univ. David Mays, Adjunct Prof., Dept. of Plant & Soil Sci., Alabama A&M Univ.

2 Project background On-site waste water disposal in Black Belt Environmental challenges with conventional on-site waste water disposal Subsurface alternatives Combined drip irrigation/plant uptake systems Subsurface Alternatives for On-site Wastewater Disposal in the Alabama Black Belt Soil Area

3 Project Goal To increase the hydraulic disposal rate of septic tank effluent on selected Blackland Prairie soils

4 Methods Delineate Black Belt soil study area Classify county soils data (SSURGO) for septic systems Analyze demographics of the study area Test combined drip irrigation/plant uptake systems

5 Study Area Delineation

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8 Soil Rating System for On-Site Septic System Soil suitability for conventional septic systems Percolation rateDistance to Restrictive layers Suitable (green)5 to 90 min./in36 inches or deeper Marginally suitable (yellow) 91 to 120 min./in.36 inches or deeper Unsuitable (Red)>120 min./in.within 36 inches of the surface Source: Alabama Department of Public Health, Administrative Code, March 2005 (Draft).

9 Suitable104,749 Acres Marginal Suitable302,331 Acres Unsuitable1,422,533 Acres Water Body30,463 Acres

10 Total Population393,953 Rural Population152,870 Urban Population241,083

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13 Potential study sites

14 Drip Irrigation Equipment

15 Virtual image of study site: Combined drip irrigation/plant uptake treatment system Planned installation: Summer 2006, Dallas Co., AL

16 Acknowledgments Alabama Agriculture Land Grant Alliance Auburn University, Biosystem Engineering Department & Civil Engineering Department Tuskegee University Alabama A&M University


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