Cau Dien, an intermediate treatment facility, ferments garbage as part of the municipal solid waste collected in Hanoi City, to create compost. Our new project under consideration introduces a modern methane fermentation system which can treat a mixture of garbage and septage, and we expect it to improve public sanitation in the surrounding areas. Recovered biogas, which can be used at the medical waste treatment facility located in the same premise, replaces fossil fuels and improves energy saving. Digested sludge after fermentation can be made into compost for agriculture.