Production de biogaz

Partner with experts in biogas production

Alfa Laval experts can help biogas operators improve resource efficiency and reduce, reuse, and recycle waste so that you optimize your production processes and achieve more sustainable results. Whether it’s the establishment of new biogas plants or the expansion of existing ones, our expertise in heat transfer and separation technologies, along with a global service and support network, enables quick and efficient set up.

Partnering with Alfa Laval also means you get access to our global presence and network as we take care of the lifecycle of your critical heat transfer and separation equipment.  

"Alfa Laval’s spiral heat exchangers are vital equipment for stable operation of our digester and overall plant economy as it saves a lot of money through heat recovery," - Lars Albak Kristensen, Plant Manager, Lemvig Biogas Plant

AGSM (Azienda Generale dei Servizi Municipalizzati) in Verona, Italy, uses an ALDRUM MegaDuo to thicken solid waste from 5% to 13% DS without using polymers. The sludge is then transferred to an anaerobic digester to produce biogas.

Pre-treatment in the biogas production process

When treating municipal solid waste in a wet system before anaerobic digestion, several steps take place, including milling, magnetic separation, pulping, inert separation, thickening, and hygienization. Thickening the pulp using Alfa Laval drum thickeners and decanter centrifuges offers benefits such as reducing the load on downstream processes, lowering energy consumption, and increasing biogas yield. The water from the pulp can also be recycled. Regulations often require hygienization and can be achieved through pasteurization using efficient spiral heat exchangers, which help maintain stable anaerobic digestion by controlling the sludge temperature closely.