发明名称 |
Process for producing a dried fertilizer from sewage sludge |
摘要 |
Sewage sludge is subjected to a treatment with an acid in order to form stable ammonium compounds before thermal drying of the sludge which would otherwise volatilize ammonia and diminish the nitrogen content of the sludge.
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申请公布号 |
US5125951(A) |
申请公布日期 |
1992.06.30 |
申请号 |
US19890309746 |
申请日期 |
1989.02.13 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
LAHODA, EDWARD J.;LEDUC, ROBERT J. |
分类号 |
C05F7/00 |
主分类号 |
C05F7/00 |
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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