05422015 is referenced by 64 patents and cites 28 patents.

Solid waste such as sewage sludge containing fecal matter is processed to reduce pathogens by at least 90% and converted to a useful product such as an amendment to agricultural land by combining the waste with an acid such as concentrated sulfuric and a base such as fly ash which exothermically react and thermally pasteurize the waste and add mineral value to the product. Pozzolanic materials, such as fly ash agglomerate the product and after grinding, the particles can aerate soil. The calcium oxide in fly ash reacts with sulfuric acid to form calcium sulfate dihydrate, a soil amendment. The amount of sulfuric acid can be controlled to provide a product with acid pH which is useful to neutralize alkaline soils such as those found in the Western United States of America.

Title
Pathogenic waste treatment
Application Number
7/922329
Publication Number
5422015
Application Date
July 30, 1992
Publication Date
June 6, 1995
Inventor
Jess Karr
Bakersfield
CA, US
Edwin C Angell
Bakersfield
CA, US
Agent
Marvin E Jacobs
Assignee
Hondo Chemical
CA, US
IPC
C02F 11/14
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