Chemistry: fertilizers – Processes and products – Bacterial
Utility Patent
1998-11-24
2001-01-02
Langel, Wayne (Department: 1754)
Chemistry: fertilizers
Processes and products
Bacterial
C071S010000, C071S014000, C162S004000, C162S014000, C162S015000, C209S162000, C209S930000, C210S605000, C210S612000, C210S613000, C210S620000, C210S621000, C210S623000, C241S020000, C241S024100, C241S024120, C241S024130, C241S024140, C241S024180, C241S024200, C241S024220, C241S024160
Utility Patent
active
06168642
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a method for recycling garbage by separating paper following by anaerobic digestion.
BACKGROUND OF THE INVENTION
We have invented and proved widely in practice a unit of anaerobic digestion working with high stability in the thermophilic region described in our patent EP. 0474895.
We have additionally invented and proved in practice the treatment of sludge resulting after anaerobic digestion in aerobic composting in the thermophilic region with production of mixed humic-chemical-organic fertilizers of high purity and fertilizing value which are described in our patent GR. 1001916.
We have also invented and developed knowledge in the production of pulp and paper which is described in our patent GR (appln.) 950100110 and we have introduced it in our solution for garbage, where paper makes a main constituent. This is the separation of paper and treatment by de-inking and with mild chemical pulping for the production of pulp of high value.
The garbage after the separation of 75-80% of paper has the composition:
Paper
14-17%
Food wastes
40-50%
Garden wastes
8-10%
Polymers
10-12%
Metals
7-9%
Glass
7-9%
A complicated process for the treatment of solid waste producing fiber pulp and fertilizer is described in U.S. Pat. No. 3,933,577. However the present invention takes into consideration additional elements in such a way that our process has been developed for complete utilization of garbage with effective recycling and with using the remaining materials for energy production by anaerobic digestion in the thermophilic region most profitably.
REFERENCES:
patent: 3817458 (1974-06-01), Gilberto
patent: 3933577 (1976-01-01), Penque
patent: 4157961 (1979-06-01), Borst
patent: 4185680 (1980-01-01), Lawson
patent: 4632692 (1986-12-01), Lebesgue et al.
patent: 4959123 (1990-09-01), Lehmann et al.
patent: 3531605A1 (1987-05-01), None
patent: 0474895A1 (1990-09-01), None
patent: 0286100B1 (1991-10-01), None
patent: 0521685A2 (1992-06-01), None
patent: 1001916 (1994-06-01), None
patent: 1002265 (1995-03-01), None
Valkanas George
Vlyssides Apostolos G.
Birch & Stewart Kolasch & Birch, LLP
Innoval Management Limited
Langel Wayne
Medina Maribel
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