Precise management and control around the landfill integrating artificial intelligence and groundwater pollution...

Area of Science:

• Environmental Science
• Hydrogeology
• Public Health

Background:

• Landfills are crucial for waste disposal but pose significant risks to surrounding groundwater quality.
• Leachate contamination from landfills can lead to serious pollution and health hazards in groundwater.
• Precise management strategies are essential for areas surrounding landfills.

Purpose of the Study:

• To develop and apply a comprehensive method for identifying and evaluating groundwater pollution around landfills.
• To assess the contamination potential of landfill leachate and its impact on groundwater quality.
• To evaluate probabilistic health risks and identify pollution sources for enhanced groundwater management.

Main Methods:

• Utilized the "pressure-state-response" framework for groundwater pollution assessment.
• Employed the Leachate Pollution Potential (LPI) index, entropy-weighted AHP, SAR, and Na% for water quality evaluation.
• Applied Monte Carlo simulation for health risk assessment and PCA-APCS-MLR and PMF models for source identification. Integrated SOM and K-means algorithms for management.

Main Results:

• Landfill leachate was identified as mature with high inorganic substance concentrations, posing a contamination risk to groundwater.
• 68.14% of the study area exhibited poor or lower groundwater quality, rendering it unsuitable for drinking and irrigation.
• Chloride (Cl^-) was the primary non-carcinogenic health risk factor; multiple pollution sources were identified, with PMF excelling in mixed pollution areas.

Conclusions:

• Groundwater near the landfill is significantly impacted, with specific clusters showing high leachate influence.
• Reducing pollutant concentrations and controlling exposure are key strategies for mitigating health risks.
• Integrated clustering algorithms (SOM, K-means) effectively differentiated groundwater impact zones, aiding targeted management.