Research Article
Off-Site Lime Stabilisation as an Option to Treat Pit Latrine Faecal Sludge for Emergency and Existing On-Site Sanitation Systems
Table 4
Average reduction of E. coli and total coliforms for upscaled trial.
| | Upscaled lime treatment | | Time (hrs) | Escherichia coli | Total coliforms | | Control | Lime reactor (pH 12) | Control | Lime reactor (pH 12) |
| | 0 | 5.2 ± 1.2 × 106 | 8.0 ± 0.3 × 106 | 1.1 ± 0.1 × 107 | 1.6 ± 0.07 × 107 | | 0.1 | Not tested | 2.3 ± 0.3 × 105 | Not tested | 4.5 ± 1.1 × 105 | | 1 | Not tested | Not detected | Not tested | Not detected | | 2 | Not tested | Not detected | Not tested | Not detected | | 3 | Not tested | Not detected | Not tested | Not detected | | 5 | Not tested | Not detected | Not tested | Not detected | | 24 | 4.5 ± 1.8 × 106 | Not tested | 1.1 ± 0.1 × 107 | Not tested |
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Not detected: detection limit 103 CFU/100 mL.
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