Advanced Oxidation CE 584
In water treatment oxidation processes are used to remove organic substances which are not biodegradable. If the oxidation is by hydroxyl radicals (OH radicals) it is called "advanced oxidation". A common method for forming hydroxyl radicals is the irradiation of hydrogen peroxide with UV light. CE 584 demonstrates this process using a discontinuous falling film reactor.
The falling film reactor consists of a transparent tube which is open at the bottom. At the top of the tube there is a circular channel. Using a pump the raw water enriched with hydrogen peroxide is transported from a tank into the channel. From here the water flows as a thin falling film along the inside wall of the tube back into the tank. This creates a closed water circuit. At the centre of the tube there is a UV lamp. By irradiation of the falling raw water with UV light hydroxyl radicals form from the hydrogen peroxide molecules. The hydroxyl radicals oxidate the organic non-biodegradable substances in the raw water. As protection against the radiation the UV lamp is fitted with a protective tube.
The flow rate and temperature of the water are continuously measured. The temperature is indicated digitally in the switch cabinet. Samples can be taken at the tank.
E.g. triethylene glycol dimethyl ether can be used to produce the raw water. Analysis technology is required to evaluate the experiments.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
- familiarisation with oxidation with hydrogen peroxide
and UV light
- recording of degradation curves for the investigation
of reaction kinetics
- influence of the hydrogen peroxide quantity on the
* Oxidation of organic substances with hydrogen
peroxide (H2O2) and UV light1
* Discontinuous operation with falling film reactor
 advanced oxidation process
 use of hydrogen peroxide and UV light
 formation of hydroxyl radicals (OH radicals)
 falling film reactor with UV lamp
 discontinuous operation
 flow rate adjustable
 measurement of temperature and flow rate
 digital temperature indication
 protection device against UV radiation
Falling film reactor (tube)
- diameter: 130mm
- height: 1000mm
- material: glass
- emitted wavelength: 254nm
- power: 120W
- max. flow rate: 360L/h
- max. head: 9m
- capacity: 10L
- flow rate: 30...320 L/h
- temperature: 0...50°C
Dimensions and Weight LxWxH: 1510x790x1900mm
Weight: approx. 170kg Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase
Water connection, drainage, hydrogen peroxide, triethylene glycol dimethyl ether (recommendation)Scope of Delivery
1 set of instructional material