Method for the disposal of aqueous sewage sludge
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United States of America Patent
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Jun 8, 1993
Issued Date -
N/A
app pub date -
Jul 22, 1992
filing date -
Sep 11, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A combination of a dehydration process for dehydrating sewage sludge by mixing a quicklime-containing material with the sludge, a cement conversion process for introducing the solids produced by the dehydration process into a cement kiln with other cement raw materials to yield cement, and a gas treatment process for introducing gases generated in the dehydration process into a cement burning process, thereby enabling conversion of the sewage sludge into cement without releasing wastes, with a reduction in fuel consumption for the cement burning, and a reduction in NOx content of the exhaust gas.
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