Research on a method for the evaluation of the pollution status of light petroleum hydrocarbon-contaminated sites via AHP-PSO

The contamination state of soil can change significantly after contamination by light petroleum hydrocarbons. To assess these changes accurately, clay from Nanjing, Jiangsu Province, was selected as the research subject, and the basic parameters of the soil, soil state-related parameters, and contam...

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Veröffentlicht in:Stochastic environmental research and risk assessment Jg. 39; H. 3; S. 1225 - 1236
Hauptverfasser: Bian, Han-liang, Lv, Bo-wen, Liu, Song-yu, Chu, Ya, Zhang, Jianwei
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2025
Springer Nature B.V
Schlagworte:
Algorithms
Analytic hierarchy process
Aquatic Pollution
Chemistry and Earth Sciences
Clay
Computational Intelligence
Computer Science
Contamination
Diesel fuels
Earth and Environmental Science
Earth Sciences
Environment
Error reduction
Evaluation
Hydrocarbons
Industrial sites
Math. Appl. in Environmental Science
Oil
Original Paper
Parameters
Particle swarm optimization
Petroleum
Petroleum hydrocarbons
Physics
Pollution
Pollution index
Probability Theory and Stochastic Processes
Soil pollution
Statistics for Engineering
Subjective assessment
Waste Water Technology
Water Management
Water Pollution Control
Soil pollution index
Contaminated site
Contamination status
Light petroleum hydrocarbons
Pollution assessment
AHP-PSO method
ISSN:1436-3240, 1436-3259
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Zusammenfassung:The contamination state of soil can change significantly after contamination by light petroleum hydrocarbons. To assess these changes accurately, clay from Nanjing, Jiangsu Province, was selected as the research subject, and the basic parameters of the soil, soil state-related parameters, and contaminated site parameters were examined. A comprehensive evaluation method combining the analytic hierarchy process (AHP) and the particle swarm optimization (PSO) algorithm was established. In the method, the AHP was used to construct an evaluation system and optimize the weight values through PSO to reduce the errors caused by subjective assessments, ultimately calculating the pollution index (SQ) to assess the degree of contamination. For diesel-contaminated silty clay and kerosene-contaminated clay with varying oil contents (0%, 2%, 4%, 6%, 8%, and 10%), the results showed that the degree of impact of petroleum hydrocarbon contamination at a site is closely related to site type. A 2% oil content has a moderate impact on industrial sites and a severe impact on residential sites. As the oil content increases to 4%, 6%, 8% and 10%, the pollution status of both industrial and residential land reaches severe levels. The results of this study provide an important reference for determining the impact of light petroleum hydrocarbon pollution on soils and sites and for verifying the validity of the AHP-PSO method in the assessment of soil pollution status.
Bibliographie:ObjectType-Article-1
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ISSN:1436-3240
1436-3259
DOI:10.1007/s00477-025-02920-6