| 发明名称 |
Methods for processing human waste |
| 摘要 |
Methods are provided for processing municipal human waste such that the processed material is is greater than 99% free of pathogenic organisms. The processed material can be used as an organic fertilizer or a “Class A” organic fertilizer. The methods include reducing the moisture content of human sludge free of polymeric flocculant to less than about 30% moisture and processing the sludge through an extruder under conditions having a minimum temperature of about 140° C., a residence time of about 30 seconds, and an atmospheric pressure differential of about 40 atmospheres. The methods are economical and have numerous advantages including reduced use of fossil fuel, fast processing time, and production of an odor free organic fertilizer free of many land use restrictions. |
| 申请公布号 |
US9028580(B1) |
申请公布日期 |
2015.05.12 |
| 申请号 |
US201414193325 |
申请日期 |
2014.02.28 |
| 申请人 |
|
发明人 |
Andrews William L. |
| 分类号 |
C02F11/12;C05F3/00;C05F7/00;C05C9/00 |
主分类号 |
C02F11/12 |
| 代理机构 |
McGuireWoods LLP |
代理人 |
McGuireWoods LLP |
| 主权项 |
1. A method for processing human municipal waste, the method comprising:
reducing the moisture content of human sludge derived from human municipal waste to a percent moisture content of less than 30%, wherein the human sludge is free of added polymeric flocculant; and processing the sludge through an extruder under conditions comprising a minimum temperature of about 140° C., a residence time of about 30 seconds, and an atmospheric pressure differential of about 40 atmospheres, wherein the extruded material is 99% free of pathogenic organisms. |
| 地址 |
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