초록 ▼

A method and apparatus for achieving in situ bioremediation of dissolved or dispersed organic contaminants in the groundwater phase at a contaminated site. The apparatus of this invention is configured to be used within an injection well of the type employed with known remediation techniques and enh

A method and apparatus for achieving in situ bioremediation of dissolved or dispersed organic contaminants in the groundwater phase at a contaminated site. The apparatus of this invention is configured to be used within an injection well of the type employed with known remediation techniques and enhances the biological treatment of soil contaminants in situ with microbes through achieving optimal levels of oxidizing agents within the soil. As such, the present invention is adapted to be employed in conjunction with conventional remediation systems to treat water-borne contaminants more efficiently. Importantly, the apparatus is also capable of delivering oxidizing agents in a manner that prevents or at least reduces the occurrence of biofouling of the injection and recovery wells.

대표청구항 ▼

A method for biodegrading a contaminant in groundwater within a subsurface region of earth, the method comprising the steps of: providing a first well having a lower end disposed in the subsurface region; providing a second well having a lower end disposed in the subsurface region a distance from th

A method for biodegrading a contaminant in groundwater within a subsurface region of earth, the method comprising the steps of: providing a first well having a lower end disposed in the subsurface region; providing a second well having a lower end disposed in the subsurface region a distance from the lower end of the first well; introducing groundwater from the lower end of the first well into the subsurface region; introducing under pressure an oxidizing agent into the groundwater introduced by the first well, the oxidizing agent being introduced into the groundwater as a dispersion of molecules and at a rate such that the oxidizing agent is present in the groundwater within the subsurface region approximately at a maximum solubility level for the oxidizing agent in the groundwater; recovering the groundwater from the subsurface region in the lower end of the second well; recycling groundwater from the second well to the first well; and inhibiting biofouling of the apparatus.