CE 584 Advanced Oxidation Vocational Education Equipment For School Lab Hydraulic Bench 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)
