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Bedding renewal

Effective use of manure in Ukraine has been and remains important for many dairy farms because of environmental damage: air pollution with ammonia and bad influence on the soil. Very often manure is accumulated in a pile or pit on the farms, and later it is transported to the field. It is known that to get qualitative and useful humus, it should be kept at least a year. However, manure accumulates daily. For example, 1,000 head of cattle per day produces an average 35 tons of manure. Of course, it is easier to get rid of it by transporting on the field. Farmers will rather build new barn for livestock to increase the herd than take up place with lagoons.

In the U.S. and the EU every liter of manure is strictly controlled. For them, the environment is the most important thing, it is that you drink and eat. So farmers purchase biogas facility or process manure for fertilizer or bedding.

Many companies offer installations for manufacturing bedding with manure. There are more than 60 installations used in the world — mostly in theU.S.andWestern Europe. Even in Russia there are six facilities.

Currently there are two different technologies for production of bedding from manure. First — «green bedding», the essence of which is that during the manure separation solid fraction is separated from the liquid and used as bedding. Now in the world there are seven companies that offer equipment for manure separation.

The second technology — a sort of continuation of the first one: after separation of solid manure fraction is thermally treated in a drying drum where it is pasteurized. These settings are produced by only three companies. Moreover, although technology is similar, the settings are different — open and closed. Closed drying drum ensures uninterrupted operation of equipment at any temperature fluctuations. With open-type units problems can occur because the drying drums react to ambient temperature, so to guarantee their smooth operation is impossible.

An important aspect of the effectiveness of the installation is that it helps you get 38% of dry matter content at the first stage of bedding renewal, next technological stage provides high temperature in the drum and helps to pasteurize the material.

 Read the full version in the magazine Milk and Farm № 3 (6) September 2011

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