Method for treating organic garbage, especially household refuse

Details Method for treating organic garbage, especially household refuse Method for treating organic garbage, especially household refuse

1986-12-17

1988-07-19

Therkorn, Ernest G.

Liquid purification or separation

Processes

Treatment by living organism

210617, 210630, 210717, 210912, 71 9, 71 14, C02F 328, C05F 904

Patent

active

047583444

ABSTRACT:
Organic waste, especially organic household garbage, is leached in a leaching apparatus for washing out any water soluble organic substances and water soluble heavy metal salts. Air is supplied into the apparatus during the leaching for aerobically decomposing or rotting the organic substances. Non-soluble substances are discharged from the leaching apparatus for further treatment. A liquid flow-off component containing solved substances is withdrawn from the leaching apparatus, collected in an intermediate tank and introduced into an anaerobic solid bed reactor wherein anaerobic bacteria reduce or decompose the liquid flow-off component to form bio-gas which is withdrawn from the solid bed reactor for use or storage in a low pressure tank. The heavy metal salts are precipitated into water non-soluble sulfides and the flow-off is returned for further leaching to the leaching apparatus in a substantially closed circuit in which any lost leaching liquid is replenished.

REFERENCES:
patent: 1029378 (1912-06-01), Lawton
patent: 3241943 (1966-03-01), Bystrom
patent: 4302236 (1981-11-01), Roman
patent: 4342650 (1982-08-01), Erickson
patent: 4504394 (1985-03-01), Breuer
patent: 4565633 (1986-01-01), Mayenkar

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