Provided is a method for disposing of contaminated deposit soil and recycled reclamation soil using the same and, more specifically, a method for disposing of contaminated dredged soil, the method comprising the steps of: seeding a mixed strain NIX51 (KACC81038BP) in the contaminated dredged soil to primarily dispose of contaminated materials in a bioreactor; and washing the degraded soil, which has been primarily disposed of, with a washing solution containing at least one selected from the group consisting of citric acid, oxalate, carbonic acid (H.sub.2CO.sub.3), and nitric acid, to secondarily dispose of heavy metals.

The invention relates to a method for disinfecting soils or other agricultural growing media, characterised by comprising the following steps: obtaining a soil or other agricultural growing medium at their field capacity; treating the soil or medium at the field capacity of the previous step with ozonated water, wherein the ozonated water is prepared in situ with ozone-production equipment connected to the water supply; allowing a period of time to pass after the treatment with ozone; and inoculating the disinfected soil or agricultural medium with at least one species of beneficial microorganism.

The invention relates to a method for disinfecting soils or other agricultural growing media, characterised by comprising the following steps: obtaining a soil or other agricultural growing medium at their field capacity; treating the soil or medium at the field capacity of the previous step with ozonated water, wherein the ozonated water is prepared in situ with ozone-production equipment connected to the water supply; allowing a period of time to pass after the treatment with ozone; and inoculating the disinfected soil or agricultural medium with at least one species of beneficial microorganism.

Methods, systems, and techniques for removal of PFAS contaminants from contaminated soil or sediment are provided. Example embodiments provide a water-based ex-situ method and system at a site that utilizes particle size and particle density segregation; deagglomeration, attrition, and retention time and sequential contacts with purified water; a recirculating water system with continual water treatment, and additional modules for destructive treatment of concentrated PFAS. In an example embodiment, the water treatment system of an example PFAS contaminant removal system and process includes ion exchange resin filtration component to remove PFAS effectively.

Methods, systems, and techniques for removal of PFAS contaminants from contaminated soil or sediment are provided. Example embodiments provide a water-based ex-situ method and system at a site that utilizes particle size and particle density segregation; deagglomeration, attrition, and retention time and sequential contacts with purified water; a recirculating water system with continual water treatment, and additional modules for destructive treatment of concentrated PFAS. In an example embodiment, the water treatment system of an example PFAS contaminant removal system and process includes ion exchange resin filtration component to remove PFAS effectively.

An in-situ thermal remediation method and a drip system for implementing the method. The drip water system collects data and changes its drip operation to optimize performance of the electrode. Electrical current, drip volume, drip cycle time and change in current are measured as a function of time and adjustments are made to the drip water volume and time between injections to optimize performance based on the observed current performance over time. A specialized screen delivers water where it is needed.

An in-situ thermal remediation method and a drip system for implementing the method. The drip water system collects data and changes its drip operation to optimize performance of the electrode. Electrical current, drip volume, drip cycle time and change in current are measured as a function of time and adjustments are made to the drip water volume and time between injections to optimize performance based on the observed current performance over time. A specialized screen delivers water where it is needed.

A subsurface soil purification method including: warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well; warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, the decomposer microorganisms being infused in the activator liquid, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well, or warming a purification liquid for decomposing a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the purification liquid into the subsurface soil by injecting the purification liquid into an in-ground injection well. The subsurface soil purification method also includes forcing air into the injection well, and feeding the air into the subsurface soil from a position in the injection well that is lower than a position in the injection well for feed-in of the activator liquid or the purification liquid.

A subsurface soil purification method including: warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well; warming an activator liquid, for stimulating decomposer microorganisms that decompose a contaminant in subsurface soil, the decomposer microorganisms being infused in the activator liquid, to a higher temperature than a groundwater temperature, and feeding the activator liquid into the subsurface soil by injecting the activator liquid into an in-ground injection well, or warming a purification liquid for decomposing a contaminant in subsurface soil, to a higher temperature than a groundwater temperature, and feeding the purification liquid into the subsurface soil by injecting the purification liquid into an in-ground injection well. The subsurface soil purification method also includes forcing air into the injection well, and feeding the air into the subsurface soil from a position in the injection well that is lower than a position in the injection well for feed-in of the activator liquid or the purification liquid.

A soil remediation facility includes a first screen apparatus including a vibratory screen, a drum mixer apparatus mixing the contaminated soil with a diluent, a saturated steam and hot water, a scrubbing apparatus including a mixing container and an impeller, a second screen apparatus including a vibratory screen. The facility further includes a floatation apparatus which adds a chemical agent for generating bubbles to the soil mixture, injects an air into the soil mixture to desorb contaminants from the soil mixture, and separates the desorbed contaminants by causing the desorbed contaminants to float. The facility further includes a hydro-cyclone apparatus which swirls substances contained in the soil mixture to sort the substances depending on a particle size and a desilter which swirls substances in the soil mixture at a higher angular velocity than an angular velocity in the hydro-cyclone apparatus to sort the substances.