EFFECTS OF LONG-TERM IRRIGATION WITH WASTEWATER ON SOIL WATER RETENTION CURVE AND SHAPE PARAMETERS FOR A SILTY-LOAM SOIL IN TAQANAK, SHAHREKORD

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BANITALEBI G.; KARIMIPOUR A.R.

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Journal: WATER AND WASTEWATER Year:2015 | Volume:26 | Issue:4 (98) Page(s): 65-73

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Title

EFFECTS OF LONG-TERM IRRIGATION WITH WASTEWATER ON SOIL WATER RETENTION CURVE AND SHAPE PARAMETERS FOR A SILTY-LOAM SOIL IN TAQANAK, SHAHREKORD

Author(s)

BANITALEBI G. | KARIMIPOUR A.R. | Issue Writer Certificate

Keywords

WASTEWATERQ2

KASOGIQ2

DERNERQ2

VAN GENUCHTENQ2

BROOKS-COREYQ2

Abstract

The effects of long-term irrigation with treated municipal WASTEWATER on soil properties have been rarely ever studied. Soil water retention curve is an important tool in soil physics and it is essential for soil and water studies. The aim of this study was to evaluate the effects of long-term irrigation with the effluent from Shahrekord WTP on the shape and moisture curve coefficients in Taqank, Shahrekord. Soil moisture levels were determined at suctions of 20, 50, 100, 200, 300 (FC), 500, 1000, 5000, 8000, 10000, and 15000 cm (PWP) and the models VAN GENUCHTEN (1980), BROOKS-COREY (1964), KASOGI (1996), and DERNER (1994) were fitted to the measured data. Based on the coefficients of determination obtained, the sum of squares, standard error, and Acaike information criteria, the VAN GENUCHTEN model was selected as the best model subject to the condition 1-1/n. Effluent irrigation for 13 years was found to have increased the ps index by 8%, but no change was observed with long-term effluent irrigation. Although 13 years of irrigation with effluent did not change the coefficient a but longer irrigation was found to have decreased the value for this parameter from 0.03 to 0.014, indicating that an increase in air entry suction point from 30 to 70 centimeters. Although irrigation with WTP effluent tended to increase the value of the coefficient n, no significant increase was observed over the 23 years of irrigation with this effluent.

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APA: Copy

BANITALEBI, G., & KARIMIPOUR, A.R.. (2015). EFFECTS OF LONG-TERM IRRIGATION WITH WASTEWATER ON SOIL WATER RETENTION CURVE AND SHAPE PARAMETERS FOR A SILTY-LOAM SOIL IN TAQANAK, SHAHREKORD. WATER AND WASTEWATER, 26(4 (98)), 65-73. SID. https://sid.ir/paper/103587/en

Vancouver: Copy

BANITALEBI G., KARIMIPOUR A.R.. EFFECTS OF LONG-TERM IRRIGATION WITH WASTEWATER ON SOIL WATER RETENTION CURVE AND SHAPE PARAMETERS FOR A SILTY-LOAM SOIL IN TAQANAK, SHAHREKORD. WATER AND WASTEWATER[Internet]. 2015;26(4 (98)):65-73. Available from: https://sid.ir/paper/103587/en

IEEE: Copy

G. BANITALEBI, and A.R. KARIMIPOUR, “EFFECTS OF LONG-TERM IRRIGATION WITH WASTEWATER ON SOIL WATER RETENTION CURVE AND SHAPE PARAMETERS FOR A SILTY-LOAM SOIL IN TAQANAK, SHAHREKORD,” WATER AND WASTEWATER, vol. 26, no. 4 (98), pp. 65–73, 2015, [Online]. Available: https://sid.ir/paper/103587/en

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