TITLE:
Application of Entropy Fuzzy Comprehensive Evaluation in Water Quality Evaluation of the Mainstream of Haihe River in Tianjin
AUTHORS:
Juanjuan Wang, Baofeng Wang, Wei Yi, Yueyue He, Xiao Shi, Zhaoqian Li
KEYWORDS:
The Mainstream of Haihe River, Fuzzy Synthetic Evaluating Method, Water Quality Assessment
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.14 No.10,
October
30,
2026
ABSTRACT: In 2019, Tianjin had an area of 23,087 hectares of freshwater aquaculture. Inland fishery waters are an important source of water for inland aquaculture in Tianjin, therefore, it is of great significance to protect the environment of inland fishery waters. Based on data of water quality collected from the mainstream of Haihe River in Tianjin from 2016 to 2020, the environmental quality was assessed using the fuzzy synthetic evaluating method. The results for the last 5 years showed that the water quality of mainstream of Haihe River fit for the surface water environment quality V standards in 2016. It was found out that the water has greatly improved during the five years. It achieved or was better than the surface water environment quality III in 2020, and even achieved Iin May. The water can meet the water requirements of fishery waters such as the fish and shrimp winter farm, the migration routes, and the aquaculture area, indicating that the water treatment work has achieved obvious results.