Advanced Oxidation Didactic Equipment Fluid Mechanics Experiment Equipment

Description

CE 584 Advanced Oxidation Didactic Equipment Fluid Mechanics Experiment Equipment

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.

Specification

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

Technical data

Falling film reactor (tube)

diameter: 130mm

height: 1000mm

material: glass

UV lamp

emitted wavelength: 254nm

power: 120W

Pump

max. flow rate: 360L/h

max. head: 9m

Tank

capacity: 10L

Measuring ranges

flow rate: 30…320L/h

temperature: 0…50°C

230V, 50Hz, 1 phase

230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase

UL/CSA optional

Dimensions and weight

LxWxH: 1510x790x1900mm

Weight: approx. 170kg

Required for operation

water connection, drain, hydrogen peroxide, triethylene glycol dimethyl ether (recommendation)