Infiltration Requirements for Surface Application OSSF Systems

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Infiltration Requirements for Surface Application OSSF Systems

Infiltration Requirements forSurface Application OSSF SystemsClifford FedlerDept of Civil and Enve EngineeringTexas Tech University9 March 2010Clifford.fedler@ttu.eduwww.webpages.ttu.edu/cfedler


Surface Application SystemPrinciple Design Parameters:Water QualityEvapotranspiration/EvaporationDeep Percolation/LeachingSoil Propertieswater intake rate, infiltrationCrop Selectionnutrient uptake/removalWastewater ApplicationdripsprinklerRunoff ControlStorage


Soil Moisture Content – inches per foot of soil depthSoil TextureFieldCapacitySandy 1.8(1.2 - 2.4)Sandy Loam 2.5(1.8 - 3.2)Loam 3.7(3.0 - 4.4)Clay Loam 4.4(3.7 - 5.0)Silty Clay 4.8(4.2 - 5.5)Clay 5.3(4.6 - 5.8)PermanentWiltingPoint0.8(0.4 - 1.2)1.1(0.7 - 1.4)1.7(1.3 - 2.0)2.1(1.8 - 2.4)2.3(2.0 - 2.7)2.6(2.2 - 2.8)Adapted from Hansen et al., 1980TotalAvailableMoisture1.0(0.8 - 1.2)1.4(1.1 - 1.8)2.0(1.7 - 2.4)2.3(1.9 - 2.6)2.5(2.2 - 2.8)2.7(2.4 - 3.0)


Ch. Ch. 4 – Plant Plant and and soil soil


Infiltration Rate and CapacitySoil Factors that Control Infiltration Rate:- Vegetative Cover, Root Development,Organic Content- Moisture Content- Soil Texture and Structure- Porosity and Permeability- Soil Bulk Density and Compaction- Slope, Landscape Position, Topography


Measuring Infiltration Rate


Double Rings Infiltrometer


Double Rings Infiltrometer


Double Rings Infiltrometer Setup


Soil Moisture Sensor


1Test Site


Test Site


Small Infiltrometer


Cumulative InfiltrationSandy Soil


Infiltration Rate-Sandy Soil


Cumulative InfiltrationClay Soil


Infiltration Rate-Clay Soil


Sandy soilClay Soil


Infiltration Rate bySoil Group/ TextureSource: Texas Council of Governments, 2003.


Fate of Pharmaceuticals andPrimary Care Products in SurfaceApplication OSSF Systems


Carbamazepine ( ng / L )180160140120100806040200Effluent Waste 1 2 3 4 5TreatmentPlantEffluentLake Number


Pharmaceuticals andPrimary Care Products (PPCP)Antidepresent - FluoxetinePain relievers - AcetaminopenEpilepsy - CarbamazepineAntibiotic - TrimethoprimEstrogens - Estradiol


Test Apparatus ComponentsDrip Irrigation UnitsSoil ColumnsPumpWater collectionWater Supply


Test Apparatus Components


Apparatus for PPCP Tests


Test Apparatus Components


Test Apparatus Components


Percent Removal of Select Pharmaceuticals in Soil Columnsat Sampling Event 2Target AnalyteSoil Column Acetaminophen Trimethoprim Carbamazepine1 99.962 99.928 99.7502 99.985 99.911 99.9863 99.995 99.984 99.9924 ND 99.996 99.9955 ND 99.995 99.9986 ND 99.991 99.9957 ND 99.999 99.9968 99.951 99.933 99.8139 99.357 99.333 97.656ND = not detected


References:TOXNET: Toxicology Data Network. United States National Library ofMedicine. Hazardous Substance Data Bank. Availableat:http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB. Accessed 20February 2009.NCCOS. Pharmaceuticals in the Environment, Information for AssessingRisk. Available at: http://www.chbr.noaa.gov/peiar/default.aspx.Accessed 21 February 2009.


Questions?THANKYOU

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