Document Type : Research article
Authors
1 Birjand University, Iran
2 Associate professor, Department of Water Engineering, Faculty of Agriculture, University of Birjand, Birjand, Iran.
Abstract
Background and purpose: More than 85 percent of urban sewage and a large proportion of industrial wastewater are water, so refined sewage can be used in any part of the activities that require water. The aim of this study was to provide a practical solution for quantitative and qualitative groundwater aquifer regeneration in areas where soil and groundwater conditions are suitable for artificial nutrition by introducing refined sewage to groundwater aquifers with a lower quality.
Materials and Methods: In this study, the chemical quality criteria for artificial feeding of aquifer including hydraulic conductivity, thickness unsaturated soil, topography and land use in geographic information systems were studied to determine the appropriate public areas for artificial feeding in land aquifer Birjand. Also, the criteria for increasing the improvement of chemical quality (quantitative and qualitative increase) were also weighed using the (Analytic Network Process) ANP method and Super Decisions software, so that the chemical quality of the aquifer was ranked as the first priority of the artificial nutrition.
Results:Based on the nutritional goal, 6.63 square kilometers of land were classified in very good and 50.66 square kilometers in good regional classifications. Based on the objective of improving the chemical quality , 1.13 square kilometers of lands were classified into a very good category and 55.61 square kilometers in good classification. For this purpose, the treated wastewater is injected into areas of an aquifer that has poor quality, to improve its quality.
Conclusion: In this research, using the location of susceptible artificial feeding areas, a solution was proposed that, while feeding areas of an aquifer that has poor quality, also increases its quality. This will make aquifer water suitable for agricultural use. This solution preserves higher quality resources for drinking and sanitary purposes.
Keywords
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