Table 2 Comparative water quality analysis of sullage, treated water, Dhaka WASA and Bangladesh Standard for drinking water in real scale filter system
From: Development of Low-cost indigenous filtration system for urban sullage: assessment of reusability
Water quality parameters | Unit | Dhaka WASA | Concentration present in sullage | Concentration present after treatment | Bangladesh standard for DW | WHO Standards for drinking water |
|---|---|---|---|---|---|---|
TDS | mg/L | 465 | 667 | 523 | 1000 | 500 |
TSS | mg/L | 419 | 522 | 14 | 10 | 10 |
NO3 1− | mg/L | 4.89 | 13.89 | 0.42 | 10 | 0.45 |
PO4 3− | mg/L | 0.25 | 5.56 | 2.28 | 6 | 0.01 |
BOD5 | mg/L | 0.68 | 5.28 | 0.14 | 0.2 | 0.2 |
Total coliform | Number/100 mL | 2.3 ×104 | 2.45 ×105 | 0 | 0 | 0 |
Fecal coliform | Number/100 mL | 0 | 0 | 0 | 0 | 0 |