| 摘要 |
<p>A method of restoring contaminated land, for example landfill (12), comprises covering the surface of the land with a substantially uninterrupted layer of a composition including pulverised fly ash mixed with lime, the preparation creating a pozzolanic pan (14). At least one soil horizon comprising varying mixtures of pulverised fly ash, biochar and secondary treated sewage sludge or other organic material is laid over the pozzolanic pan (14).</p> |
