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CE 584 Advanced Oxidation
Education / GUNT Hamburg / Process Engineering / Water Treatment /

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.
  Analysis technology is required to evaluate the experiments. A suitable parameter is  e.g. TOC (total organic carbon). Organic dyes (e.g. azo dyes) can be used to produce the raw water. 
  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.


Learning Objectives / 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 


[1] Advanced oxidation process

[2] Use of hydrogen peroxide and UV light
[3] Formation of hydroxyl radicals (OH radicals)
[4] Falling film reactor with UV lamp
[5] Discontinuous operation

[6] Flow rate adjustable
[7] Measurement of temperature and flow rate
[8] Digital temperature indication

[9] Protection device against UV radiation


Technical Data

Falling film reactor (tube)
- diameter: 130mm
- height: 1000mm
- material: glass
UV lamp
- emitted wavelength: 254nm
- power: 120W
- max. flow rate: 360L/h
- max. head: 9m
- capacity: 10L
Measuring ranges
- flow rate: 30...320 L/h
- temperature: 0...50°C



Dimensions and Weight
l x w x h: 1510 x 790 x 1990 mm
Weight: approx. 150 kg
Required for Operation

230V, 50Hz, 1 phase or

120V, 60Hz, 1 phase

Scope of Delivery

1 trainer
2 buckets

2 beakers
1 set of instructional material

Order Details
083.58400  CE 584  Advanced Oxidation