Cpc Engineering Corporation

International Process Systems

Norman J Blais

Charles R Olsen

Clifford E Nelson

Daniel J Hagen

Method, system and apparatus are disclosed for in-vessel composting of organic material. A compost handling apparatus moves forwardly through a bed of composting material in an elongate open bay. Specifically, an agitator comprises a feed belt such as a transversely mounted cylindrical drum, which feeds composting material to a conveyor which lifts the material and projects it rearwardly behind the agitator. A regulator, such as an adjustable deflector, controls the discharge of composting material by the conveyor. The deflector is adjusted as the agitator moves forward through the composting material to develop a level bed in the bay behind the agitator. A sensor may be employed to generate a depth signal corresponding to the depth of the composting material for controlling the deflector.

Organic material composting system

A method and apparatus for controlling the operation of a primary filter press to insure the attainment of a desired quality cake in the press including a conduit for feeding a slurry or composition to the filter press, transducers responsive to the volume of slurry delivered to the filter press, the rate of flow, the pressure at the inlet to the press and the characteristics of the slurry solids for producing electric signals proportional thereto, relating at least certain of the signals to compute a quantity K indicative of the quality of the cake being formed in the press when the pressure to the filter press attains 90% of the terminal pressure and modifying the characteristics of the slurry to achieve the desired volume of K. The invention further comprehends the use of a pilot filter press of significantly smaller size than the primary press and fed by the same slurry and operated in the same manner. Since 90% of the terminal pressure in the pilot filter can be achieved in a very short time as compared with the primary press, the quantity K can be computed and adjusted long prior to the attainment of 90% of the terminal pressure in the primary filter press.

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Fiskdale, MA, United States of America

Norman J Blais