Method for screening prevention and control measures and technologies based on groundwater pollution intensity...

Area of Science:

• Environmental Science
• Hydrogeology
• Geochemistry

Background:

• Groundwater pollution poses significant environmental and health risks.
• Effective management requires accurate assessment of pollution intensity and site-specific remediation strategies.

Purpose of the Study:

• To develop a comprehensive system for evaluating groundwater pollution intensity (GPI).
• To establish a method for grading pollution sources hazards (PSH) and groundwater intrinsic vulnerability (GIV).
• To create a framework for selecting appropriate prevention and control technologies (PCT).

Main Methods:

• Revised Nemerow Pollution Index for PSH grading.
• Improved DRTAS model for GIV grading.
• Double-sided multi-factor coupling model for GPI evaluation.
• Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) for PCT screening.

Main Results:

• The system categorizes contaminated sites as prior, ordinary, or common.
• Specific remediation strategies were recommended for a rare earth mine refuse dump, chromium slag dump, and landfill.
• The proposed PCT screening method proved feasible and effective compared to conventional approaches.

Conclusions:

• The developed GPI system and PCT screening approach offer valuable technical support for groundwater pollution monitoring and management.
• The methodology provides a scientific basis for prioritizing and implementing remediation efforts at contaminated sites.
• This system is applicable to various pollution scenarios, enhancing the efficiency of groundwater protection strategies.