Evaluation of water quality of Karun River for agricultural water supply using AHP model
Subject Areas : watere sciences
Hamed
Abdolhi arpanahi
1
(Department of Water Sciences, Shooshtar Branch, Islamic Azad University, Shooshtar, Iran)
Hossein
Eslami
2
(water engineering department, water science faculty, Islamic azad university, shoushtar branch, shoushtar)
Keywords: "GIS", "Fuzzy Hierarchy Process", "Karun River", "Water Quality",
Abstract :
Surface water is one of the main sources of agricultural water supply. Therefore, understanding and understanding of the water quality of rivers and their zoning based on the quantity of different elements will help us to make management decisions and reduce water pollution. The purpose of this research is qualitative zoning of Karun River in Khuzestan province in Masjed Soleiman to Ahvaz using fuzzy logic and hierarchical analysis (FAHP). For this purpose, qualitative parameters including: chloride (CL), sodium sorption ratio (SAR), electrical conductivity (EC), sodium (Na), and total dissolved solids (TDS) were used in November 1977. Qualitative parameters were first zoned using IDW interpolation method. Then, each of the obtained maps were fuzzy incremental linear membership function. Then, by preparing a questionnaire, paired comparisons between parameters based on the role of these parameters in determining water quality for agricultural consumption and based on AHP method, weight coefficients of each parameter were obtained. Came. Multiplying the weighting coefficients in the fuzzy layers and combining them, obtained a zoning map for agricultural use. The results show that the Gotvand, Arab Asad, Shahid Abbaspour and Gargar Shushtar stations are very suitable for agricultural use. Ahwaz and Malasani stations were located in a suitable area for agricultural use and Valiabad and Tang Dolab stations were located in a very unsuitable location for agricultural use.
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