Farm waste and effluents

Animal excrements are a natural source for fertilizing. Moreover, they represent a considerable potential of renewable energy for farming countries.

The anaerobic digestion takes naturally place in the context of sustainable development and a sustainable agriculture. It allows the production of a digestat more homogenous than its initial products and it is partly deodorised, enhancing its use in the agriculture.

	Installation of Mr MARTIN, farmer at Puidoux (CH)

In order to be more economically attractive, the digestion can include, beside the animal excrements ((liquid) manure), co-products whose energy potential is much higher and whose treatment offers an additional income. Numerous co-products varying from food processing wastes to dedicated crops can be used.

It must be noted however that the digestion process does not reduce the nitrogen content. In case the quantity of nitrogen is the limiting factor, specific technologies must be put in place to concentrate the nitrogen to an transportable fraction or to remove it.

Our contribution:

	Technical review and technological development
	Information and advice concerning the start-up of projects
	Organisation of site visits
	Technical-economical feasibility studies: characterisation of type and quantities of manure and co-products, installation dimensioning and costs pre-calculation
	Assistance during the erection phase : organisation and regulatory aspects
	Realisation of preliminary designs, writing tender documents/ project specifications, consultation of suppliers
	Process, project survey
	Realisation of environmental impact studies
	Follow-up of the operation
	Research & Development: co-digestion, nitrogen treatment (*), pilot plant research
(*) In collaboration with local partners or specialists if the case arises.