De-watering process
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United States of America Patent
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Oct 19, 2004
Grant Date -
Oct 9, 2003
app pub date -
Jul 25, 2002
filing date -
Apr 9, 2002
priority date (Note) -
Expired
status (Latency Note)
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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.
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