Katia Deng/ Shanghai Daily news

A Shanghai-based beer company has run a 100-day operation to generate electricity by recycled marsh gas and save energy. The daily capacity reaches 1,000 kilowatt-hours.

The company, in Jinshan District, used technologies developed by a research institute to keep the gas into a 40-cubic-meter storage bag. It is then transmitted to three desulfurization tanks to remove water and toxic materials. Finally, the gas is poured into an 80-kilowatt power generator.

The generator has run 2,400 hours and produced nearly 100,000 kilowatt-hours of electricity. The estimated annual capacity may hit 300,000 kilowatt-hours, reducing 200,000-cubic-meters of greenhouse gases.

Beer companies produce large amounts of wastewater during production, especially in the summer. Discharge may cause pollution such as an algae outbreak.

Experts said wine and sugar producers could also use the energy-saving technology.

France-based Veolia, an environmental solutions company, was interested in the project. Veolia has signed a 20-year contract with the Shanghai government to deal with the rubbish at the city’s ports.