Electrolux RO 400 - Page 21

21
Examples of rejection for substances which may be present in water
INORGANIC SUBSTANCES
-turbidity
-colour
Cations/Metals
-sodium
-potassium
-calcium (hardness)
-aluminium
-iron
-manganese
Cations/Heavy metals
-copper
-lead
-zinc
-mercury
-cadmium
-chrome
-nickel
Anions
-fluoride
-chloride
-nitrate
-sulphate
ORGANIC SUBSTANCES
Hydrocarbons
-heptane, octane, decane etc.
-benzene, toluene, xylene, ethyl benzene etc.
- diesel oil
Polyaromatic hydrocarbons
-PAH
Chlorinated hydrocarbons
-Compounds which can form when water is chlorinated
Trihalomethanes
-trichloromethane
-bromodichloromethane, dibromochloromethane, tribromomethane
Pesticides
-PCB
MICROORGANISMS
-heterotrophic bacteria (48 hr test)
-coliform bacteria, E.coli
%
>99
>99
>96
>97
>99
>99
>99
>99
>99
>99
>99
>99
>99
>98
>99
>99
>98
>97
>97
>98
>99
>99
>99
>99
>60
>99
>99
>99
>99
TECHNICAL DATA
Notes:
The values for the inorganic substances were measured in a sample of water which was taken after two minutes’
operation at a flow of 4.4 litres per minute, 80 % recovery and a challenge water with a salt content of 800
mg per litre at a temperature of 20 °C. Test laboratory: VVL, Stockholm (Sweden).
The values for the organic substances were measured in a sample which was taken after two minutes’
operation at a flow of 2.8 litres per minute, 80 % recovery and a challenge water to which was added each
relevant substance to a concentration which is 100 times higher than the lowest detectable quantity at a
temperature of 10°C. Test laboratory: AnalyCen, Lidköping (Sweden).
Microbiological testing was carried out under a range of operating conditions with a challenge water
containing a very great number of microorganisms. The water samples were collected weekly after operating
times of 20 and 40 seconds and 1, 2, 6, 12 and 18 minutes. Test laboratory: SVELAB, Jönköping (Sweden).