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Monthly Archives: August 2015

Albion Chemicals – Iron Removal Plant

Albion Chemicals are manufacturers of of bleach and other cleaning products. Cape Town municipal water is used as the main ingredient for all of their products.

Albion were experiencing a high number of returns on their products due to ‘blow-outs’ of the product bottles. A number of water and product samples determined that the most likely cause for the ‘blow-outs’ was the presence of iron in the make-up water. Indeed, iron levels in the municipal supply were found at times to exceed 2mg/L and the SABS standard for drinking water.

The City of Cape Town uses ferric chloride as a coagulant on many of its water treatment plants. At times the process is not managed correctly and either excess ferric chloride is present in the water; or flocs are carried over from the settling process into the reticulation system.

A2V designed a filter system using a specialized catalytic media, designed for the removal of iron and manganese. The media  acts as an oxidation catalyst causing the metals to precipitate within the media bed,consistently removed iron to <0.01ppm.  It is also effective at removing arsenic, aluminium and other heavy metals.

The catalytic media uses an oxidation, adsorption and filtration process similar to Greensand and Birm, but to a much higher removal efficiency and significantly lower life cycle cost. The media lasts for 5 to 10 years and does not require regeneration. The entire process is simpler to operate and less costly to install than traditional iron removal systems.

Iron removal filters using catalytic media