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Development of new technology and equipment for the ultrasonic pre-treatment of various biosolids

To develop new technology and equipment for ultrasonic treatment of biosolids, to increase the capacity of biogas power stations by about 30-40%.

The project is a relevant contribution to the development of renewable energy. There are large quantities of waste biosolids produced from agriculture, the food industry and wastewater treatment. These organic materials are mainly fermented to produce biogas in anaerobic processes. The process needs huge reservoirs with high building costs, as the first step of the anaerobic degradation (hydrolysis of the cells) is rather slow. High investigation costs make renewable energy expensive. Our aim is to accelerate the degradation by pre-treating a part of the biosolids using ultrasound and destroying the resistant structures (cell walls) before fermenting. The technology has recently been applied to sewage sludge with great success. It was possible to intensify the anaerobic degradation by about 50-70%, which means a huge increase in the capacity of fermentors working with sewage sludge. (see e.g. www.untrawaves.de). We intend to outline and optimise ultrasonic treatment technology for other kinds of biosolids produced by the agriculture and forest industry where coarse grained particles contain more stable organic compounds (lignin, cellulose, etc.) than sewage sludge. This technology would considerably reduce investigation costs of biogas power stations, making alternative energies more attractive for investors, or increase the capacity of the existing units. Keywords: ultrasound, biogas.
Acronym: 
BIOUH
Project ID: 
3 775
Start date: 
01-03-2006
Project Duration: 
56months
Project costs: 
320 000.00€
Technological Area: 
Gaseous biomass
Market Area: 
Utilities and Related Firms

Raising the productivity and competitiveness of European businesses through technology. Boosting national economies on the international market, and strengthening the basis for sustainable prosperity and employment.