Water treatment system and method using high pressure advanced oxidation process with unreacted ozone reusing
OwnerJong Seob Shiminventor
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Abstract
A water treatment system using a high pressure advanced oxidation process with unreacted ozone reusing is disclosed, which are able to increase a decomposition speed of a pollutant by reusing a high pressure advanced oxidation process which uses an ozone and photocatalyst and a photo-oxidation reaction of a ultraviolet ray. The capacity of the expensive ozone generator can be reduced as compared to the conventional advanced oxidation process which uses a large capacity ozone generator in which almost ozone is discharged into the air. In addition, it is possible to decrease the load of the off-gas ozone removing apparatus for removing the off-gas ozone which is discharged into the air.
Claims15
A water treatment system using high pressure advanced oxidation process with unreacted ozone reusing, comprising:
- a high pressure photo-oxidation reaction apparatus which includes a housing having an inlet for receiving an ozone-dissolved source water and a discharge port for discharging the inputted source water, an ultraviolet lamp which is installed in the interior of the housing for irradiating ultraviolet ray to the source water inputted into the interior of the housing, and a photocatalyst coated supporter which is filled into the interior of the housing;
- a pressurizing pump which pumps the source water into the inlet of the housing of the high pressure photo-oxidation reaction apparatus;
- an ozone generator of which ozone supply line is connected with a source water line connected with a suction port of the photo-oxidation pressurizing pump for thereby generating ozone, so that the generated ozone is spread into the source water which is inputted via the suction port of the photo-oxidation pressurizing pump;
- and
- a gas-liquid separation flotation tub which has a scum removing port for discharging floated substances which are floated in an absorbed state to a micro foam ozone generated from the ozone dissolved in the treatment water inputted into the interior of the reaction tub, with an inlet port of the same being provided at a lower side of the reaction tub so that the treatment water discharged from the discharge port of the housing of the high pressure photo-oxidation reaction apparatus is inputted into the interior of the reaction tub which is open so that a normal pressure is formed in the interior of the same, with a discharge port being provided at the reaction tub for ensuring that the treatment water inputted into the interior of the reaction tub is discharged.
A water treatment method using high pressure advanced oxidation process with unreacted ozone reusing, comprising:
- a pressurizing step in which a waste water to be treated is pressurized with a high pressure by means of a photo-oxidation pressurizing pump along with an ozone generated by an ozone generator;
- a photo-oxidation decomposition step in which a pollutant of the pressurized waste water is decomposed based on a photo-oxidation reaction using a high pressure photo-oxidation reaction apparatus;
- unreacted ozone first reuse step in which a high pressure reaction substance of the high pressure photo-oxidation reaction apparatus is inputted into a treatment water of the first treatment waste water and gas-liquid separation flotation tub of the second pretreatment floatation tub, and the floating substance and the pollutant are removed based on a DOF (Dissolved Ozone/Air flotation) method;
- a unreacted ozone second reuse step in which a gas containing a unreacted ozone collected at the upper sides of the second pretreatment floatation tub and the gas-liquid separation floatation tub is pressurized with a high pressure along with the waste water supplied from the waste water storing tub using the floatation pressurizing pump, and the waste water of the first pretreatment floatation tub inputted from the waste water strong tub is treated based on the dissolved ozone/air flotation method for thereby removing the floating substance and the pollutant;
- and
- an ozone decomposition step which decomposes a remaining unreacted ozone discharged from the first pretreatment flotation tub by using an off-gas ozone removing apparatus.
Dependencies are inferred from the claim text.