| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable rapid decomposition and removal and to enable the decomposition and removal of the contaminants of unsatd. strata as well at the time of executing purification and restoration by bioremediation. SOLUTION: Two pieces or above of wells 11, 12 are excavated to the saturation strata 12 near the underground polluted point 1 polluted with the contaminants and >=2 electrodes 23, 24, parted from each other, are embedded in the saturation strata 12 near the underground polluted point 1. A bioreactor 25 which forms methane by utilizing hydrogen is installed above the ground. Voltage is impressed between the electrodes 23, 24 and the hydrogen generated at the cathode 24 is supplied to the bioreactor 25. The ground water pumped up from the well 22 existing on the downstream side of the ground water stream 5 at the underground polluted point 1 is introduced into the bioreactor 25. The saturation strata 12 are impregnated with this water together with the methane formed by the bioreactor 25 and the oxygen generated at the anode 23 from the well 21 existing on the upstream side of the ground water stream 5 at the underground polluted point 1.</p> |
