US Patent 7731859 Process for conditioning sewage sludge
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Patent abstract
A method of treating sewage sludge that has a solids concentration of about 18-35% by weight includes treating the sewage sludge with sodium hydroxide, potassium hydroxide, or a combination thereof to increase its pH to at least about 12, and treating the sewage sludge with calcium oxide. The treatment of the sewage sludge with the calcium oxide can take place before and/or during the treatment of the sludge with the sodium hydroxide, potassium hydroxide, or a combination thereof. The amount of calcium oxide used is about 0.05-0.8% by weight of the sewage sludge.
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Patent Inventor Names
Ronald Eugene Woodruff0
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US Patent 07731859 Process for conditioning sewage sludge US Patent 7731859 Process for conditioning sewage sludge
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Patent Number
077318590
Patent Number
77318590
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Patent Jurisdiction
Patent Number
077318590
Date of Patent
June 8, 2010
0Patent Application Number
114564080
Date Filed
July 10, 2006
0Official Website
Patent Primary Examiner
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US Patent 07731859 Process for conditioning sewage sludge
Infobox
Is a
Patent jurisdiction
Patent number
07731859
Date of patent
June 8, 2010
Patent application number
11456408
Date Filed
July 10, 2006
Patent primary examiner
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