TY - JOUR
T1 - The effects of soil type and effluent pre-treatment on soil aquifer treatment
AU - Kopchynski, T.
AU - Fox, Peter
AU - Alsmadi, B.
AU - Berner, M.
N1 - Funding Information:
This research was supported by the American Water Works Association Research Foundation. Water Environment Federation. Salt River Project. Tucson Water. United States Department of Agriculture Water Conservation Laboratory and the Cities of Phoenix, Scottsdale, Tempe, Mesa, and Glendale. The paper does not necessarily reflect the views of the supporters and no official endorsement should be inferred.
PY - 1996
Y1 - 1996
N2 - A matrix of three different levels of effluent pre-treatment and four different soil types was used in a study on the effects of soil type and effluent pre-treatment on Soil Aquifer Treatment (SAT). The objective of the study was to assess the feasibility of SAT for the recharge of groundwater and indirect potable reuse. The soils represented a wide range of hydrological and physicochemical characteristics from a proposed recharge site in Phoenix, Arizona, USA. Effluents studied included denitrified and conventional secondary effluents. These effluents contain different levels of biological oxygen demand (BOD5), organic carbon, ammonia, and nitrate. Ten 2.6 m columns were operated under different wetting/drying cycles. For the effluents studied, resultsindicate that effluent pre-treatment does not impact organic carbon removal efficiencies. Under optimal wetting/drying cycle times, BOD5 can be removed efficiently although a residual organic carbon concentration of 5-6 mg/l persists. Ammonia is effectively nitrified under most conditions but denitrification does not readily occur even when denitrified effluent is applied. Soil Aquifer Treatment appears to be a robust treatment system for denitrified effluent producing total nitrogen concentrations less than 8 mg/l and organic carbon concentrations less than 6 mg/l.
AB - A matrix of three different levels of effluent pre-treatment and four different soil types was used in a study on the effects of soil type and effluent pre-treatment on Soil Aquifer Treatment (SAT). The objective of the study was to assess the feasibility of SAT for the recharge of groundwater and indirect potable reuse. The soils represented a wide range of hydrological and physicochemical characteristics from a proposed recharge site in Phoenix, Arizona, USA. Effluents studied included denitrified and conventional secondary effluents. These effluents contain different levels of biological oxygen demand (BOD5), organic carbon, ammonia, and nitrate. Ten 2.6 m columns were operated under different wetting/drying cycles. For the effluents studied, resultsindicate that effluent pre-treatment does not impact organic carbon removal efficiencies. Under optimal wetting/drying cycle times, BOD5 can be removed efficiently although a residual organic carbon concentration of 5-6 mg/l persists. Ammonia is effectively nitrified under most conditions but denitrification does not readily occur even when denitrified effluent is applied. Soil Aquifer Treatment appears to be a robust treatment system for denitrified effluent producing total nitrogen concentrations less than 8 mg/l and organic carbon concentrations less than 6 mg/l.
KW - Ammonia
KW - Nitrate
KW - Organic carbon
KW - Soil aquifer treatment
KW - Wetting/drying cycles
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U2 - 10.1016/S0273-1223(96)00843-8
DO - 10.1016/S0273-1223(96)00843-8
M3 - Conference article
AN - SCOPUS:0030482573
SN - 0273-1223
VL - 34
SP - 235
EP - 242
JO - Water Science and Technology
JF - Water Science and Technology
IS - 11 pt 7
T2 - Proceedings of the 18th Biennial Conference of the International Association on Water Quality. Part 8
Y2 - 23 June 1996 through 28 June 1996
ER -