| 摘要 |
<p>Organic waste, especially organic household garbage, is leached in a leaching apparatus for washing out any water soluble organic substances and water soluble heavy metal salts. Air is supplied into the apparatus during the leaching for aerobically decomposing or rotting the organic substances. Non-soluble substances are discharged from the leaching apparatus for further treatment. A liquid flow-off component containing solved substances is withdrawn from the leaching apparatus, collected in an intermediate tank and introduced into an anaerobic solid bed reactor wherein anaerobic bacteria reduce or decompose the liquid flow-off component to form bio-gas which is withdrawn from the solid bed reactor for use or storage in a low pressure tank. The heavy metal salts are precipitated into water non-soluble sulfides and the flow-off is returned for further leaching to the leaching apparatus in a substantially closed circuit in which any lost leaching liquid is replenished.</p> |
