System and method for water treatment and soil remediation using high-pressure and high concentration dissolved ozone

A method for purification of a process liquid contaminated with organic impurities in water recycle and reuse systems to destroy contaminants or reduce concentrations of contaminants, the method comprising the steps of:

• providing a water stream upstream of a contaminated water;
• generating an ozone-saturated water in an on-site vessel;
• adding the ozone-saturated water to the contaminated water;
• oxidizing the contaminants contained in the contaminated water,
• wherein the ozone-saturated water is driven by the water stream and flows into the contaminated water to oxidize the contaminants.

A method for remediating a contaminated groundwater and soil by destroying contaminants or reducing concentrations of the contaminants, the method comprising the steps of:

• providing a flow of groundwater flowing through a contaminated region of the contaminated groundwater and soil;
• providing at least one first injection points extending substantially perpendicularly to the ground from above ground to the flow of groundwater upstream of the contaminated region;
• generating an ozone-saturated water in an on-site vessel;
• injecting the ozone-saturated water from the on-site vessel through the at least one first injection points into the flow of groundwater, wherein the ozone-saturated water is driven by the flow of the groundwater and flows into the contaminated region;
• adding a solution of hydrogen peroxide into the ozone-saturate water before the ozone-saturated water is injected into the at least one first injection points, wherein a concentration of the hydrogen peroxide solution is approximately 30%;
• oxidizing the contaminants contained in the contaminated region;
• installing at least one biological treatment systems downstream of the contaminated region to destroy byproducts created by the oxidization step;
• pumping water downstream of the at least one biological treatment systems to the on-site vessel through at least one first pumping points, thereby recycling unused ozone back to the on-site vessel, wherein the at least one first pumping points extend substantially perpendicularly to the ground from above ground to the downstream of the at least one biological treatment systems;
• and
• applying UV light in a wavelength ranging from 250 to 350 nm to the on-site vessel for further purification.

A method for purification of a process liquid contaminated with organic impurities in water recycle and reuse systems to destroy contaminants or reduce concentrations of contaminants, the method comprising the steps of:

• forming a water recirculation loop with a pressurized vessel, wherein the process liquid in the pressurized vessel flows out of the pressurized vessel and recycles back to the pressurized vessel by pumping, the pressurized vessel has a pressure up to 8 barg;
• generating ozone-saturated water in the pressurized vessel;
• adding a solution of hydrogen peroxide to the water recirculation loop, wherein a concentration of the hydrogen peroxide solution is approximately 30%;
• adding a UV light to the water recirculation loop, wherein the UV light has a wavelength ranging from 250 to 350 nm;
• oxidizing the organic impurities in the process liquid by the combination of ozone-saturated water, hydrogen peroxide and UV light.