Challenge: This coal-red power plant along France’s Le Havre harbor was experiencing signicant eciency loss due to fouling in the cooling water circuit. In particular, the plant suered from serious macrofouling due to mussel growth in the water structures and condenser water boxes. Le Havre furthermore experienced fouling as a result of sedimentation, corrosion and scaling. These problems were unsuccessfully controlled with conventional chlorine and other water treatments. The overall costs and poor performance led the plant to search for alternatives leading them to Mexel 432/0. Treatment: Mexel 432/0 was initially tested at LeHavre a decade prior and adopted throughout the whole plant in order to eectively treat an array of fouling and operational problems. The three units under tre

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