Iron(III) Chloride solution according to DIN EN 888
Properties
Acidic, homogenous, completely water soluble, reddish-brown solution. Slight traces of ferrous oxide sediment may occur. Sharp odour of hydrogen chlo¬ride (hydrochloric acid).
Specification
| Parameter | Unit | Value |
|---|---|---|
| Fe3+ | g/kg | Approx. 140 |
| Iron | ol/kg | Approx. 2.5 |
| pH-value at 20ºC | <1,0 | |
| Density at 20 °C | g/cm3 | min. 1,43 |
| Freezing point | Approx. -45°C | |
| Viscosity | mPas | approx 7 |
| Cadmium (Cd) | mg/kg | < 0,1 |
| Chromium (Cr) | mg/kg | < 15 |
| Copper (Cu) | mg/kg | < 7 |
| Mercury (Hg) | mg/kg | < 1 |
| Nickel (Ni) | mg/kg | < 36 |
| Lead (Pb) | mg/kg | < 2 |
| Zinc (Zn) | mg/kg |
Iron(III) Chloride solution is a coagulant for:
– Elimination of phosphate
– Damping of bulking sludge
– Sludge conditioning
– Elimination of hydrogen sulphide
– Precipitation for unloading the biological step
Storage
Storage tanks shall be constructed from acid-resistant material like glass-fibre reinforced plastic or rubberlined steel. Ensure that brass or mild steel fittings are avoided. Pipes and valves of PVC, reinforced polyester and other chloride- and acid-resistant plastic materials are satisfactory subject to temperature limitations.
A regular inspection and cleaning of the tanks and dosing installations is necessary.
Packaging
– In bulk in road tankers
– 1000 litres PP IB-Containers with metal guard
Dosage
Iron Chloride solution should be dosed directly via suitable piston diaphragm dosing pump into raw water, waste water or stock flow. Dilution prior to dosing is not recommended. Iron Chloride solution should be diluted with water in maximum ratio 1:30. The dosing installation should be installed in such a way, that a good intermixing is achieved. Optimum dosage has to be determined individually, for example by a laboratory test. For application advice please feel free to contact the Pure Water team at any time.