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Referenties / Case studies / Holliday Pigments : two stage Physical Chemical Treatment

20-8-2009 - Holliday Pigments : two stage Physical Chemical Treatment

Holliday Pigments is the World leading producer of the pigment Ultramarine Blue and Violet Manganese. From the production unit in Comines, France, the pigment is exported to over 80 countries.

The production process of Ultramarine Blue is based on baking a mixture of clay, silica, aluminum and sulfur. Besides the pigment, some byproducts like salts, sulfi des, sulfates and thiosulfates are formed. They are dissolved and wasted in water. This stream, highly concentrated in sulfi des, is the main wastewater source of the production process. The new wastewater treatment plant is operational since mid 2009.

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