基于熵权TOPSIS法的西安市地热水水质评价

Proceedings of the 2019 2nd International Conference on Sustainable Energy, Environment and Information Engineering (SEEIE 2019) Pub Date : 2019-05-01 DOI:10.2991/SEEIE-19.2019.22

Panpan Xu, Guo-xia Meng, H. Qian, Qiying Zhang

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引用次数: 1

摘要

合理、客观的地热水水质评价可为地热水资源的开发利用提供科学依据。以西安第四纪沉积储层(Q)和蓝田-灞河群(LB)的化学资料为基础，采用熵权TOPSIS法对地热水水质进行了评价。结果表明:LB地热水除TH外其他化学指标均超标，水质较差。对于Q的地热水，只有NH4+和f6超标。过量的NH4+和过量的Fare分别是由于人类活动和含氟矿物的溶解。基于TOPSIS评价模型的综合评价也表明，Q区地热水水质优于LB区地热水水质，熵权TOPSIS方法在地热水水质评价中具有较好的适用性。Keywords-geothermal水;水质评价;熵加权TOPSIS法;西安

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Geothermal Water Quality Assessment Based on Entropy Weighted TOPSIS Method in Xi'an, China

Reasonable and objective geothermal water quality assessment can provide a scientific basis for the development and utilization of geothermal water resources. Based on the chemical data of the Quaternary sediment reservoir (Q) and the Lantian-Bahe Group (LB) in Xi’an, the entropy weighted TOPSIS method was used to evaluate the water quality of geothermal water. The results show that the chemical indices (except for TH) of the LB geothermal water exceed the standard with poor quality. For the geothermal water of the Q, only NH4+ and Fexceed the standard. The excessive NH4+ and Fare due to human activities and the dissolution of fluoride bearing minerals, respectively. Comprehensive assessment based on TOPSIS evaluation model also reveals the geothermal water quality of the Q is better than that of the LB. Besides, the entropy weighted TOPSIS method has good applicability in the quality assessment of geothermal water. Keywords—geothermal water; water quality assessment; entropy weighted TOPSIS method; Xi'an

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Proceedings of the 2019 2nd International Conference on Sustainable Energy, Environment and Information Engineering (SEEIE 2019)

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