Journal
WATER
Volume 13, Issue 18, Pages -Publisher
MDPI
DOI: 10.3390/w13182507
Keywords
groundwater; Mamdani fuzzy inference system model; MFISM; USSL diagram; irrigation water quality index; treated wastewater; agri-environmental; Hammamet-Nabeul shallow aquifer; Tunisia
Categories
Funding
- Taif University Researchers Supporting project, Taif University, Taif, Saudi Arabia [TURSP-2020/229]
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This study evaluates the water quality for irrigation in the Hammamet-Nabeul region using the MFSIM model and applies the Mamdani fuzzy logic method to classify groundwater quality. The results indicate that water quality is influenced by anthropogenic practices such as excessive water and fertilizer use, as well as discharge of partially treated wastewater.
Using an adaptive Mamdani fuzzy inference system model (MFSIM), the purpose of this paper is mainly to assess and rank the assessment and ranking of water quality for irrigation occurring in the Hammamet-Nabeul (Tunisia) shallow aquifer. This aquifer is under Mediterranean climate conditions and affected by intensive and irrational agricultural activities. In the current study, the Mamdani fuzzy logic-based decision-making approach was adapted to classify groundwater quality (GW) for irrigation. The operation of the fuzzy model is based on the input membership functions of electrical conductivity (EC) and sodium absorption ratio (SAR) and on the output membership function of the irrigation water quality index (IWQI). Validation of the applied MFISM showed a rate of about 80%. Therefore, MFISM was shown to be reliable and flexible in quality ranking for irrigation in an uncertain and complex hydrogeological system. The results demonstrated that water quality contamination in the aquifer is affected by the overlaying of three types of negative anthropogenic practices: the excess use of water for irrigation and chemical fertilizers, and the rejection of partially treated wastewater in some areas. The implemented approach led to identifying the spatial distribution of water quality for irrigation in the studied area. It is considered a helpful tool for water agri-environmental sustainability and management.
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