发明名称 |
Pathogenic waste treatment |
摘要 |
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.
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申请公布号 |
US5422015(A) |
申请公布日期 |
1995.06.06 |
申请号 |
US19920922329 |
申请日期 |
1992.07.30 |
申请人 |
HONDO CHEMICAL, INC. |
发明人 |
ANGELL, EDWIN C.;KARR, JESS |
分类号 |
C02F11/00;C05F3/00;C05G1/00;(IPC1-7):C02F11/14 |
主分类号 |
C02F11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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