Process
In the 1960s, agricultural and community policies encouraged intensive animal husbandry. The increase in this type of farming has generated significant quantities of manure that have to be stored and then disposed of.
Manure comes in two forms: solid and liquid.
Solid manure is either mixed with bedding (garden manure), or emptied into a slurry area (in the case of buildings with grating flooring). Liquid manure is emptied into a slurry pit.
Slurry pits are a major worry for farmers. The main problems are:
- smells from manure and bedding in buildings housing animals
- massing of manure in the pit thus making it difficult to pump (for spreading on fields)
- smells during manure spreading
Alongside the use of grating flooring, more traditional methods of animal husbandry still exist. The best example is keeping horses in a stall. Here the bedding is changed on average every two days. The bedding is made of absorbent organic matter (barley straw, wheat straw, flax, wood chippings, etc.). This type of bedding is also commonly used for pigs, cattle and poultry. It absorbs urine and faecal matter and cannot be kept in use for very long as the moisture content increases quickly and the urea quickly breaks down into ammonia (the urease effect). This becomes a source of irritation to animals’ legs and respiratory tracts.
REALCO’s technology offers a biological method based on enzymatic hydrolysis and on introducing bacteria selected for their ability to break down organic matter. In effect, the presence of macromolecules is the principle cause of manure massing. The proteins and fibres form coherent structures that give rise to the massing. Consequence: oxygen transfer within the manure becomes impossible and anaerobic flora develops producing nauseous odours.
Addition of a specially selected enzymatic cocktail accelerates hydrolysis of matter in slurry pits. REALCO has also developed the technology to maintain hydrolysed molecules in solution. The manure therefore stays liquid, homogenous and is easily pumped for manure spreading on fields. The hydrolysed molecules form a complex network of molecules that retains water and slows down evaporation. The manure retains its moisture for longer. This is also useful for manure spreading and during very hot periods when damp flooring is an essential parameter for efficient growth of cultures.
Another consequence of enzymatic hydrolysis is that more bacteria develop in the manure.
Biotechnology can ensure controlled breakdown of bedding while providing a healthy environment for animals. REALCO’s technology is based on a synergy of several components acting to break down animal manure, preserve maximum moisture and introduce a healthy flora for animals.
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