| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an in situ cleaning method for contaminated ground or contaminated groundwater using intermittent high pressure air injection devices capable of controlling the timing of injecting high pressure air while increasing the amount of air to be injected per injection and steadily controlling the opening and closing of a valve. <P>SOLUTION: The in situ cleaning method uses the intermittent high pressure air injection devices 10 for cleaning in situ contaminated ground and the like by intermittently injecting high pressure air into the contaminated ground and the like. The intermittent high pressure air injection devices 10 each comprise a tank 1 for storing high pressure air, an injection pipe 2 for injecting the high pressure air stored within the tank 1 into the contaminated ground and the like, an electromagnetic valve 4 for intermittently discharging the high pressure air from the tank 1 side to the injection pipe 2 side, and an injection nozzle 3 provided at the end of the injection pipe 2 for injecting the high pressure air to the contaminated ground or the contaminated ground water, whereby a plurality of the intermittent high pressure air injection devices 10 are operated in synchronization with each other or alternately. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
