Liquid fraction used as liquid fertiliser. Two types of spreading equipment required. Conclusions Practical option for dairy and pig farms. Convenient at cleaning out times. Low capital costs.
Rainfall causes effluent run-off and nutrient loss.
Potential risk of pollution. Liquid residue storage Allows for better timing of applications to land, as the residues are stored and then spread when required. Convenient at cleaning out times. Problems can occur with the capping of stores. Requires a powerful mixing system.