| 摘要 |
<p>The present invention includes a method of landfill mining which comprises the following steps: (1) converting the landfill to aerobic production by injection of moisture and air, and a raw material such as sewage sludge (if required), and venting of depleted air and moisture, thereby increasing the rate of waste decomposition; (2) excavating the landfill to remove material; (3) separating the removed material to substantially isolate at least one segregated material from the residual material; (4) disposing of at least one segregated material; and (5) returning the residual material to the landfill. The segregated materials preferably include decomposed waste and recyclables, and may also include toxic material and hazardous waste. The rate of aerobic production may be controlled as follows: if the temperature in the landfill becomes too high, then additional air and additional water may be injected to cool the landfill; and if the temperature in the landfill becomes too low, then additional raw material such as sewage sludge may be injected to increase the reaction rate.</p> |
