METHOD OF PREPARING BIOCOMPOST FROM ORGANIC WASTES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2015 - IPC C05F17/00 C05F3/00 

FIELD: agriculture.

SUBSTANCE: method of preparing biocompost from organic wastes lies in the fact that two modes of ventilation are carried out in it. In the first mode, with the variable flow rate, the air from the exhaust system of the fermenter is fed to air-air heat exchanger through which the fresh air is passed. In the second mode, with the constant maximum flow rate, the exhaust air is discharged directly into the environment, and the outdoor air through the secondary circuit of the heat exchanger and the inflow system is fed into the fermentable biomass. The transition from the first mode to the second is carried out after reaching the temperature of the fermented biomass of 65-70°C. The temperature, humidity and oxygen content in the fresh air and the exhaust window of the ventilation system are periodically measured. According to the measured information the state of the fermented biomass is assessed, and the optimal programs of changing the air flow rate are formed, which ensures a minimum heating time of the fermented biomass. The device comprises a fermenter with a perforated bottom, a ventilation system equipped with a air-air heat exchanger with a bypass tee at the inlet and the controlled valve changing the direction of flow, sensors of temperature, humidity and oxygen content, mounted at the inlet and outlet of the ventilation system, and an automatic control device which inlet is connected to the sensors of temperature, humidity and oxygen content, and which outlet is connected to the controlled drive of the forced fan and the drive of the controlled valve.

EFFECT: invention provides improvement of biocompost quality and reduction of time of its preparation.

6 cl, 4 dwg