Process and plant for the recovery of phosphorus and coagulants from sludge
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United States of America Patent
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Issued Date -
Nov 25, 2004
app pub date -
Jul 12, 2004
filing date -
Jun 21, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for treatment of waste containing organic material, phosphorous and water in suitable amounts to be a pumpable sludge and in order to be oxidizable through supercritical water oxidation, comprises the steps of: putting the sludge into conditions being supercritical for water; adding oxidant, particularly, oxygen to the sludge, wherein the organic material contained in the waste is substantially completely oxidized by means of supercritical water oxidation; separating the phosphorous from water and from carbon dioxide formed during the oxidation; and recovering the phosphorous by means of dissolving the phosphorous in an alkali.
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