Silo and process for decontaminating and composting sewage sludge
US6013177A · kind A · utility
Inventor
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A silo and process for decontaminating sewage sludge comprising a vertical silo within which are a plurality of discrete levels, each level having at least one air inlet pipe and at least one air outlet tube, a plurality of monitors for temperature and moisture, a central shaft through which air may travel, and at least one oxygen monitor; loading of herbaceous material in the upper portion of the silo; spraying sewage sludge onto the herbaceous material as it enters the silo to produce an herbaceous material-sewage sludge mixture; monitoring at least one parameter at each of the discrete levels; unloading the mixture from the lower portion of the silo; reloading some portion of the mixture into the upper portion of the silo; and collecting some portion of the mixture for further treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.