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عمومی::
زیست گاز
Hammarby Sjöstad has three different waste-to-energy systems: the first burns combustible garbage to power a local district heating and elec- tric cogeneration plant, the second recovers heat from the sewage treatment system, and the third converts sludge to biogas for cooking (1,000 units) and to power local buses.
The city already has a system for removing the sludge and converting it to biogas by anaerobic digestion at the city's Sjölunda Wastewaster Treatment Plant.
The biogas is supplied to the city's gas grid and contributes to cooking and electric generation.
Nonetheless, since 15 percent of domestic refuse is organic food waste, it remains a significant potential source of biogas, enough to warrant further efforts to devise a system to cap- ture its embedded energy and nutrients.
Even though Bo01's experiments with collect- ing organic food waste for conversion to biogas failed, they point to the great potential this has for future development.
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