OZONE INJECTION APPARATUS FOR PURIFYING CONTAMINATED SOIL AND UNDERGROUND WATER

摘要

PURPOSE: An ozone injection apparatus for purifying contaminated soil and underground water is provided to increase purification efficiency of contaminants discharged into underground by setting injection pressure according to depth of the contaminants and injecting ozone into the contaminants so that ozone reaches depth of the contaminants. CONSTITUTION: The ozone injection apparatus comprises an ozonizer(10) for producing and outputting ozone; first storage tank(20) which is connected to the ozonizer and equipped with first pressure control sensor(22), and in which ozone received from the ozonizer is stored to send out the stored ozone if the internal pressure reaches a certain pressure by measuring an internal pressure of the first storage tank using the first pressure control sensor; second storage tank(60) which is connected to the first storage tank to accumulate ozone transferred from the first storage tank and equipped with second pressure control sensor(62) to send out the stored ozone if it reaches calculated set pressure value according to depth of contaminants existing in soil; a pressurization pump(50) installed on a connection passageway between the first storage tank and the second storage tank to transfer and supply ozone to the second storage tank from the first storage tank until ozone pressure of the second storage tank reaches a set pressure value; an injection pipe(80) inserted into injection hole perforated in contaminated ground to transfer and inject ozone outputted from the second storage tank into contaminants in soil and/or underground water; and a control part for outputting ozone of the set pressure value from the second storage tank by setting an ozone injection pressure value calculated according to depth of the contaminants as pressure of ozone outputted from the second storage tank and controlling flow of ozone transferred to the injection pipe from the ozonizer through the first storage tank and the second storage tank.