Table 2 KPI rating scale.
Mine water recycling KPI classification | |||||
|---|---|---|---|---|---|
Type | Parameter | ||||
Evaluation standard | Very talented | Excellent | Generally | Serious | Very serious |
5 | (5, 4] | (4, 3] | (3, 2] | (2, 1] | |
KPI dimension | Ecological level | Water abundance | Water quality | Water resource utilization | |
A1, A2, A3 | B1, B2, B3, B4 | C1, C2, C3 | D1, D2, D3, D4, D5, D6 | ||
