Superoxidant poiser for groundwater and soil treatment with in-situ oxidation-reduction and acidity-basicity adjustment

An apparatus, comprises:

• a microporous diffuser;
• a mechanism to deliver an oxidant or a reductant to the microporous diffuser;
• and
• a controller responsive to a signal that corresponds to a determined oxidation-reduction potential of the soil formation to select oxidant or reductant to deliver to the microporous diffuser to adjust a molar ratio of the oxidant or reductant to contaminant present in the soil formation.

An apparatus comprises:

• a first mechanism to deliver an oxidant;
• a second mechanism to deliver a liquid;
• a first microporous diffuser coupled to the first and second mechanisms that allows delivery of the oxidant and the liquid to a soil formation, with the liquid forming a coating over the oxidant;
• a second microporous diffuser coupled to the first and second mechanisms that allows delivery of the oxidant to the soil formation, with the second microporous diffuser arranged in the soil formation relative to the first microporous diffuser, to allow the second microporous diffuser to release oxidant under the liquid coated oxidant;
• and
• a controller responsive to a signal that corresponds to a determined oxidation potential of the soil formation to adjust and maintain a selected molar ratio of oxidant to contaminant present in the soil formation.

An apparatus comprising:

• a first mechanism to deliver a reductant;
• a second mechanism to deliver a liquid;
• a first microporous diffuser coupled to the first and second mechanisms that allows delivery of the reductant and liquid to a soil formation with the liquid forming a coating over the reductant;
• a second microporous diffuser coupled to the first and second mechanisms that allows delivery of the reductant to the soil formation with the second microporous diffuser to release reductant under the liquid-coated reductant;
• and
• a controller responsive to a signal that corresponds to a determined oxidation potential of the soil formation to adjust and maintain a selected molar ratio of reductant to contaminant present in the soil formation.