Research Article
Off-Site Lime Stabilisation as an Option to Treat Pit Latrine Faecal Sludge for Emergency and Existing On-Site Sanitation Systems
Table 7
Average Chemical Oxygen Demand for small-scale trials.
| | Batch ID | Average Chemical Oxygen Demand | | Initial (g COD/kg TS) | 24 hrs (g COD/kg TS) | Final (168) (g COD/kg TS) |
| | Control | 2810 ± 1084 | — | 3909 ± 1440 | | pH 10 | 4841 ± 2636 | 4875 ± 1559 | 3750 ± 1999 | | pH 10.5 | 5032 ± 3206 | 4825 ± 3821 | 3750 ± 2199 | | pH 11 | 3293 ± 2226 | 3973 ± 714 | 4699 ± 1962 | | pH 11.5 | 3575 ± 1909 | 3828 ± 547 | 4118 ± 1724 | | pH 12 | 3646 ± 1616 | 4205 ± 775 | 4816 ± 1785 |
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±: standard deviation across four replica lime experiments.
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