Details

Autor(en) / Beteiligte

• Li, Menghua
• Li, Bo
• Chu, Jingyan
• Wu, Huang
• Yang, Zhicheng
• Fan, Juan
• Yang, Lei
• Liu, Pu
• Long, Jie

Titel

Groundwater Quality Evaluation and Analysis Technology Based on AHP-EWM-GRA and Its Application

Ist Teil von

• Water, air, and soil pollution, 2023, Vol.234 (1), p.19, Article 19

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• As the most sensitive and active subsystem of the ecological environment system, groundwater is easily polluted by natural and human factors. Evaluation of groundwater quality is critical for preventing groundwater contamination and safeguarding groundwater. In this study, seven evaluation factors were determined based on principal component analysis and Chinese groundwater quality standard. The distance function was used to combine the weights of groundwater indicators determined by the analytic hierarchy process and the entropy weight method. On this basis, it improved grey relational analysis and established a groundwater quality evaluation model to assess the groundwater quality of 20 sampling points in the study area. The results indicate that 85% of the groundwater quality in the study area is good, and 15% has poor water quality and not suitable for drinking located in the southwest. The main excess ions are total dissolved solids, total hardness, sodium ion, sulfate ion, chloride ion, and fluoride ion slightly exceed the standard, mainly affected by human activities. The groundwater quality evaluation model based on analytic hierarchy process, entropy weight method, and grey relational analysis has subjectivity and objectivity but also possesses the non-linear and fuzzy relationship between groundwater quality indicators. It can reflect the groundwater quality truthfully and provide a theoretical basis for groundwater quality evaluation.