De-watering process
AssigneeGeneral Chemical Corporation
InventorsChristopher Bruce Lind, Raymond T. Pettyjohn
Life of this patent
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Abstract
Process muds are de-watered by the addition of high clay alumina. The clay is mixed with plant sludges or muds so as to cause flocculation of the solid particles, and separating the water from the solid materials, as by filtration. Various polymers and/or alum process residues can be added as well. In addition to de-watering plant sludges, this method also reduces color, and reduces the total organic carbon as well as heavy metals, from the filtered water. This permits disposal of the water to public waterways with no additional treatment.
Claims11
A method of de-watering process muds and sludges comprising adding a high clay alumina to the process muds and sludges in an amount to cause detackification of the process muds and sludges, and flocculation and aggregation of solid particles in the process muds and sludges, and separating the particles and water wherein said high clay alumina is a coproduct of manufacturing aluminum sulfate, from bauxite.
Dependencies are inferred from the claim text.