Who:

University of Lausanne (UNIL), founded in 1537
7 Faculties – 12,400 students and 3,100 staff

Context:

By arrangement with the Municipal Cleaning Department of the City of Lausanne, leftover food and coffee grounds from UNIL cafeterias and restaurants are used to make biogas.
The biogas production plant is environmentally-friendly.
Approximately 60 tons of organic waste are taken each year to Les Saugealles Farm, 15 km from the UNIL, to be turned into biogas.
Previously this waste was incinerated.

Description:

The biogas production plant, integrated in Les Saugealles Farm (which belongs to the City of Lausanne), digests the farm’s organic waste (manure and slurry), as well as that from a nearby riding school, along with slops from several large public service kitchens including the UNIL, waste fruit and vegetables from a nearby wholesaler and various co-substrates supplied by local authority services (grass cuttings from the city’s sports grounds, used vegetable oil).

This natural gas is then burned by a combined heat and power (CHP) unit which produces green electricity and heats the farm in the winter.

Budget:

This project is financed by the sustainable development fund of the City of Lausanne.
For the UNIL, the cost of waste disposal is CHF 270/ton
(incineration costs CHF 405/ton)

Results:

Reduced cost of waste to be incinerated
But also:
Source of heating for the operator
Electricity guaranteed 100% green for 100 Lausanne households.

Duration:

Installation: February 2007. UNIL: introduced in April 2009

Website:

http://www.unil.ch/durable/home/menuinst/dechets/bio-methanisation.html

UGAF Best Practice Category:

Campus Management / Waste