INCREASE OF EFFECTIVENESS OF HERBS PRESERVATION BY THE USE OF OZONIZED AIR
The technologies used for harvesting feed depend on weather conditions and are associated with the loss of a significant amount of nutrients accumulated in the raw materials, because the haymaking period in the North-West Federal District is characterized with high humidity and low air temperature, frequent fogs and dew, a small number of sunny days and rainy weather. The total loss in the process of harvesting hay is 30-40% of dry matter and 45-50% of protein. That’s why the task of improving the efficiency of feed preparation is relevant. The article presents an analytical review of scientists ‘works in the field of ozonation. In 2018, a laboratory installation for insufflating an air-ozone environment into pressed stalk-like feed was made on the production basis of Institute of Agroengineering and Environmental Problems of agricultural production - branch of Federal Scientific Agroengineering Center VIM. The installation allows processing stalked mass with working ozone doses from 30 to 500 mg / m3 and airspeed in the mixing chamber - no more than 5 m / s. The experiments were conducted on two samples of different humidity and density. Experiment No. 1 was laid in the period from 20th July to 1st August 2018, it was carried out on the dried mass with humidity of 30-32% and pressing density of 85-130 kg / cm3, experiment No. 2 was carried out in the period from 1stAugust to 10th August 2018 on the dried mass with a moisture content of 22-26% and pressing density of 100-130 kg / cm3. The results are presented in graphical form. The results showed that the treatment of the stalked mass with humidity from 22-32% by the air-ozone environment is effective and reduces the loss of nutrients by 20% during storage of raw materials and prevents self-heating due to the inhibition of harmful microflora in the stalked mass with high humidity.