Compost aeration system

Chemistry: molecular biology and microbiology – Miscellaneous

Patent

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Details

435287, 435818, 422184, 71 9, C12M 100, C12M 104, C05F 1108

Patent

active

045215170

ABSTRACT:
A permanent underground compost aeration system enables forward and reverse circulation of air through a compost pile by a single non-reversible blower and air pipe dampering arrangement. Adequate oxygenization of an entire compost pile is assured. Outside air in varying amounts can be introduced into the aeration system during its operation to provide fine control of oxygenation. A complete underground moisture drainage arrangement for the aeration system is provided to prevent flooding of the system. The aeration system is compatible with computer controls for air volume, temperature and moisture content. A pair of parallel elongated main header pipes are connected with two groups of smaller apertured air distribution pipes extending in opposite directions at right angles to the header pipes. All pipes of the aeration system have bottom moisture drain openings. A single non-reversible blower with damper controls allows air to be delivered to the aeration system through one or both main header pipes with or without the addition of ambient air to the system in varying amounts. Multiple air flow circulation paths through a compost pile are enabled by the system.

REFERENCES:
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patent: 3401085 (1968-09-01), Croon et al.
patent: 3802957 (1974-04-01), Cusi
patent: 3895916 (1975-07-01), Rosner
patent: 4060390 (1977-11-01), Shimizu et al.
patent: 4230676 (1980-10-01), Taylor et al.
patent: 4233266 (1980-11-01), Kummer
patent: 4236910 (1980-12-01), Norin
patent: 4288241 (1981-09-01), Shelef
Willson et al, Manual for Composting Sewage Sludge by the Beltsville Aerated-Pile Method, Cincinnati, Ohio, U.S. Environmental Protection Agency, Publication EPA-600/8-80-022, May 1980, pp. 22-32.

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