Patent ID: 6923596

Claim:
A method for the remediation of contaminated soil or groundwater at a pre-evaluated site, said method comprising the following steps: determining an appropriate quantity of hydrogen peroxide to be used, an appropriate number of injection point wells necessary for remediation, and an appropriate amount of bacteria to be introduced at the site; installing a plurality of injection points at the site; establishing a maximum acceptance rate of water for each injection point; introducing a hydrogen peroxide solution at each injection point; maintaining the temperature in each injection point below 40° C.; maintaining a rate of temperature increase in each injection point below 1° C. change for every 5 minutes; maintaining a liquid level in each injection point which is consistently decreasing; increasing the rate of introduction of the hydrogen peroxide solution to maintain the injection point temperature below 40° C., until the amount of hydrogen peroxide used is between 60 per cent and 80 per cent of the amount determined to be used for the site; once the amount of hydrogen peroxide introduced into the injection points is between 60 per cent and 80 per cent of the amount determined to be used for the site, increase the rate of introduction of the hydrogen peroxide solution to at least 75 per cent of the established maximum acceptance rate for each injection point, maintaining the temperature at and around each injection point between 25° C. and 70° C. for between 30 and 90 minutes; terminating the introduction of hydrogen peroxide into the injection points when one of the following conditions occurs: (a) all of the hydrogen peroxide is used up; (b) injection point capacity is reached; or (c) injection point temperature is sustained between 50° C. and 70° C.; flushing each of the injection points with water to reduce the temperature at each injection point below 45° C.; introduction of bacterial nutrients into at least one of the injection points; and flushing the at least one of the injection points with water to distribute the bacterial nutrients.