Table 3.
LPI for the MSWS and MSWH leachate samples
| Index | Parameter | Analytical resulta | Pollutant weight (wi) | Individual pollution rating (pi) | Overall pollution rating (wi*pi) | Percentage of reduction | |||
|---|---|---|---|---|---|---|---|---|---|
| MSWS | MSWH | MSWS | MSWH | MSWS | MSWH | ||||
| LPIHeavy metal | Cr | 0.3 | 0.83 | 0.064 | 5 | 6 | 0.32 | 0.384 | 30.04 |
| Pb | 0.25 | 1.17 | 0.063 | 6 | 10 | 0.378 | 0.63 | ||
| Hg | 0.0005 | 0.007 | 0.062 | 5 | 14 | 0.31 | 0.868 | ||
| As | 0.003 | 0.34 | 0.061 | 5 | 5 | 0.305 | 0.305 | ||
| CN− | – | – | 0.058 | – | – | – | – | ||
| Zn | 2.76 | 3.04 | 0.056 | 5 | 5 | 0.28 | 0.28 | ||
| Ni | 0.51 | 0.97 | 0.052 | 5 | 6 | 0.26 | 0.312 | ||
| Cu | 0.44 | 0.89 | 0.05 | 6 | 7 | 0.3 | 0.35 | ||
| Fe | 15.84 | 17.41 | 0.045 | 5 | 6 | 0.225 | 0.27 | ||
| LPIInorganic | pH | 5.37 | 5.53 | 0.055 | 5 | 5 | 0.275 | 0.275 | 18.85 |
| TKN | 1463.3 | 2076.6 | 0.053 | 49 | 75 | 2.597 | 3.975 | ||
| Ammonia nitrogen | 931.1 | 1404.9 | 0.051 | 95 | 100 | 4.845 | 5.1 | ||
| TDS | 10,990 | 13,860 | 0.05 | 25 | 34 | 1.25 | 1.7 | ||
| Cl− | – | – | 0.048 | – | – | – | – | ||
| LPIOrganic | COD | 27,100 | 31,583.3 | 0.062 | 84 | 87 | 5.208 | 5.394 | 1.87 |
| BOD5 | 16,033.3 | 16,566.7 | 0.061 | 70 | 70 | 4.27 | 4.27 | ||
| Phenolic compounds | 0.030 | 0.160 | 0.057 | 5 | 5 | 0.285 | 0.285 | ||
| Total coliform | – | – | 0.052 | – | – | – | – | ||
| LPI | 25.07 | 28.98 | 13.48 | ||||||
Bold represents the sum of the above cell values
aAll average values in mg/L except pH