Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1998-07-24
2000-04-25
Griffin, Steven P.
Chemistry: fertilizers
Processes and products
Organic material-containing
241 23, 241DIG38, 422 23, 422 32, 588220, 588228, 53127, C02F 102, C02F 122, C05F 900
Patent
active
060539577
ABSTRACT:
The present invention provides a waste treatment process and device thereof which can reduce the size and weight of organic waste by decomposing the waste to powder form and bacteria free substance that may be used as a kind of fertilizer for plants. The waste is first frozen by liquefied nitrogen in a cooling chamber to a temperature less than -200.degree. F., wherein during this freezing procedure, the gas generated from the waste must be removed from the cooling chamber. Then, the frozen nitrogen is immediately transferred to a heated chamber having a temperature of at least 160.degree. F. but not exceed 200.degree. F. During this heating procedure, the water content of the waste is sucked out of the heated chamber, so that the waste is decomposed to form the bacteria free powder.
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ATT Environmental Technology Inc.
Chan Raymond Y.
Griffin Steven P.
Warn Elin
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