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Table 6

Fuzzy comprehensive evaluation results of first-level index

No.Rural domestic sewage treatment technologyU1SortingU2SortingU3SortingU4Sorting
Septic tank technology 3.0000 2.9016 3.0000 2.3920 
Stabilization pond technology 3.0000 2.6720 2.1433 1.3920 
Land treatment technology 2.6265 3.0000 3.0690 1.7841 
Artificial wetland treatment technology 2.6555 2.2788 2.8567 1.5442 
Biofilm technology 2.1867 3.8227 3.7134 3.2159 
No.Rural domestic sewage treatment technologyU1SortingU2SortingU3SortingU4Sorting
Septic tank technology 3.0000 2.9016 3.0000 2.3920 
Stabilization pond technology 3.0000 2.6720 2.1433 1.3920 
Land treatment technology 2.6265 3.0000 3.0690 1.7841 
Artificial wetland treatment technology 2.6555 2.2788 2.8567 1.5442 
Biofilm technology 2.1867 3.8227 3.7134 3.2159 
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