Table 1 shows information about the disposal of processed solid sewage sludge at the Aqualink Regional Treatment Facility in 2012 and 2024.
Table 1
| Year | Used as fertiliser (thousands of tonnes) | Sent to landfill (thousands of tonnes) | Incinerated (thousands of tonnes) | Other methods (thousands of tonnes) | Total (thousands of tonnes) |
|---|---|---|---|---|---|
| 2012 | 185 | 142 | 65 | 28 | 420 |
| 2024 | 412 | 12 | 186 | 30 | 640 |
Calculate the percentage of processed solid sewage sludge that was incinerated in 2024. Give your answer to 3 significant figures.
State the biological treatment process used respectively for:
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