Claims
- 1. A method of producing soil conditioners from waste material, and of utilizing the internal energy thereof, while reducing the volume of the waste material at the same time, wherein initial compacts of a refuse-sewage sludge mixture are subjected to intense rotting whereby the water content thereof is reduced from a value from about 50 to 60% to about 20%, and the compacts become dried and storable, comprising the steps of:
- grinding and screening the dried and storable compacts, with a screen to form a coarse fraction remaining as oversize on the screen and a screened-out fine fraction;
- the screened-out fine fraction being directly usable as a soil conditioner;
- newly compacting the coarse fraction remaining as oversize on the screen; and
- thereafter thermally treating only the newly compacted coarse fraction by one of low-temperature carbonization and combustion.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2939229 |
Sep 1979 |
DEX |
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Parent Case Info
This is a continuation-in-part of U.S. patent application Ser. No. 299,060 filed Sept. 3, 1981, and now abandoned which is a continuation of U.S. patent application Ser. No. 125,778, filed Feb. 29, 1980 (now abandoned).
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1145646 |
Mar 1963 |
DEX |
Non-Patent Literature Citations (1)
Entry |
"By Broad Potomac's Shore" The Water & Sewerage Systems of The District of Columbia, 2/1979, pp. 31 & 32. |
Continuations (1)
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Number |
Date |
Country |
Parent |
125778 |
Feb 1980 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
299060 |
Sep 1981 |
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