Sample No. | Ratio (Sludge/Waste) | Initial voltage (mV) at 2nd day | Peak voltage (mV) | Peak voltage duration (day) | Final voltage (mV) at 60 days |
I | 1:2 | 2 | 350 | 27 | 111 |
II | 2:1 | 218 | 263 | 21 | 178 |
III | 1:1 | 346 | 416 | 13 | 153 |
IV | Only OWa | 918 | 918 | 2 | 243 |
V | Only SSb | 794 | 960 | 13 | 590 |