Sweet Water in Sugar Refining: Source, Consumption, and Importance for Yields
In sugar refining, every drop counts. While much attention is given to crystallization, clarification, or decolorization, one often underappreciated by-product plays a key role in overall efficiency: sweet water. Proper management of sweet water can significantly improve recovery, reduce sucrose losses, and increase refinery yield. 1. What is Sweet Water? Sweet water refers to the dilute sugar solution generated during the washing of sugar crystals in affination and centrifugation stages. It contains dissolved sucrose and traces of molasses, typically with a Brix value between 5–15°. Though not concentrated enough for direct crystallization, sweet water is a valuable stream for recovery and reuse. 2. Sources of Sweet Water in the Refinery Sweet water is generated mainly in: Affination centrifuges – when crystals are washed to remove the molasses coating. Refining centrifuges – during crystal washing to ensure high-purity white crystals. Filter cake and other washing operations – sma...