Table 5 Physicochemical characteristics of treated SWW
Parameters | Values (g L–1) | % reduction | |
|---|---|---|---|
Raw SWW | Treated SWW | ||
pH | 4.30 (± 0.0) | 9.13 (± 0.0) | – |
Electrical conductivity (dS m–1) | 6.21 (± 0.0) | 4.11 (± 0.0) | – |
Salinity (ppt) | 4.53 (± 0.0) | 3.15 (± 0.0) | 30.6 |
Total dissolved solids (TDS) | 4.07 (± 0.0) | 2.64 (± 0.1) | 35.2 |
Total suspended solids (TSS) | 6.67 (± 0.8) | 3.14 (± 0.5) | 53.0 |
Total solids (TS) | 6.90 (± 0.1) | 2.86 (± 0.6) | 58.6 |
Total phosphate (TP) | 1.06 (± 0.0) | 0.06 (± 0.0) | 94.5 |
Total nitrogen (TN) | 0.44 (± 0.0) | 0.05 (± 0.0) | 89.3 |
Dissolved oxygen (DO) | 7.84 (± 0.6) | 0.68 (± 0.0) | 91.3 |
Biochemical oxygen demand (BOD) | 2.56 (± 0.5) | 0.67 (± 0.0) | 74.0 |
Chemical oxygen demand (COD) | 76.00 (± 6.9) | 40.27 (± 0.5) | 47.0 |
Starch | 6.10 (± 0.8) | – | – |
Starch* | 30.00 (± 0.0) | 11.12 (± 1.7) | 62.9 |
Cyanide (mg L–1) | 5.2 (± 1.0) | 2.4 (± 0.02) | 53.84 |