Liquid coagulants are designed for high clarification rates and give low sludge volumes compared to alum and other conventional coagulants. They also assist in oil and grease removal, remove fine suspended particles quickly and efficiently, work at a wide pH range, reduce the need for acid or caustic, and permit low dosage due to high active content, according to Garratt-Callahan Company.
The emulsion, liquid, or dry flocculants with a range of charge values and molecular weights are available. These flocculants have been developed to increase solids to produce a drier cake, eliminate process upsets through precise selection of products and provide versatility to meet the needs specific to each plant's process or application.
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