Process and installation for treating liquids charged with pollutants
First Claim
Patent Images
1. A process for treating a liquid, which is charged with pollutants that are difficult to break down, by wet oxidation with an ozone-containing gas and UV radiation, comprising the steps of:
- passing and dissolving an ozone-containing carrier gas, without exposing the gas to UV radiation, into a liquid which is charged with pollutants, isolating undissolved carrier gas from the liquid containing ozone and removing gas bubbles from the ozonated liquid to render the ozonated liquid substantially free of gas bubbles, and thereafter irradiating the liquid containing ozone with UV radiation to achieve simultaneous radical formation and oxidation with radicals in the liquid.
1 Assignment
0 Petitions
Accused Products
Abstract
A process and an installation for treating liquids, which are charged with pollutants that are difficult to break down, by means of wet oxidation with ozone-containing gas and UV radiation. The installation comprises injectors by means of which ozone-containing gas produced in an ozone generator can be passed into the liquid. The liquid is then introduced into a reaction and degasification vessel, before it passes through the UV irradiation units.
-
Citations
26 Claims
-
1. A process for treating a liquid, which is charged with pollutants that are difficult to break down, by wet oxidation with an ozone-containing gas and UV radiation, comprising the steps of:
- passing and dissolving an ozone-containing carrier gas, without exposing the gas to UV radiation, into a liquid which is charged with pollutants, isolating undissolved carrier gas from the liquid containing ozone and removing gas bubbles from the ozonated liquid to render the ozonated liquid substantially free of gas bubbles, and thereafter irradiating the liquid containing ozone with UV radiation to achieve simultaneous radical formation and oxidation with radicals in the liquid.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
14. An apparatus for treating a liquid which is charged with pollutants by oxidation with an ozone-containing carrier gas and UV radiation, comprising:
- a source of ozone-containing carrier gas, a device for introducing the ozone-containing gas into a liquid to be treated, a device for irradiating the liquid containing ozone with UV light, which is disposed downstream from the device for introducing the ozone-containing gas, and a reaction- and degasification-vessel system disposed between the device for introducing the ozone-containing gas and the irradiating device for removing substantially all gas bubbles from liquid ozonated by said introducing device prior to the ozonated liquid reaching the irradiation device.
- View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
25. An apparatus for treating a liquid which is charged with pollutants by oxidation with an ozone-containing carrier gas and UV radiation, comprising:
- a source of ozone-containing carrier gas, a device for introducing the ozone-containing gas into a liquid to be treated, a device for irradiating the liquid containing ozone with UV light, which is disposed downstream from the device for introducing the ozone-containing gas, and a reaction- and degasification-vessel system disposed between the device for introducing the ozone-containing gas and the irradiating device wherein the reaction- and degasification-vessel system comprises a plurality of double vessels, each double vessel having an inner vessel disposed inside of an outer vessel, each outer vessel being closed and having an outlet line which leads from an upper region thereof for carrying non-dissolved carrier gas therefrom, each inner vessel being open at a top thereof to allow for an overflow of liquid, and each inner vessel receiving a supply line for the liquid containing ozone which feeds into a lower region of each inner vessel, and an outlet line for outflow of liquid emanating from a lower region of each outer vessel.
-
26. An apparatus for treating a liquid which is charged with pollutants by oxidation with an ozone-containing carrier gas and UV radiation, comprising:
- a source of ozone-containing carrier gas, a device for introducing the ozone-containing gas into a liquid to be treated, a device for irradiating the liquid containing ozone with UV light, which is disposed downstream from the device for introducing the ozone-containing gas, and a reaction- and degasification-vessel system disposed between the device for introducing the ozone-containing gas and the irradiating device, the reaction- and degasification-vessel system including a first reaction and degasification vessel and a second reaction and degasification vessel arranged downstream from the first vessel, the second vessel having a supply line which is connected to an outgoing line of the first vessel.
Specification