英語翻譯
Waste water can be a substantial source of energy.In the United Kingdom,the energy content of waste waters ranges from 2.1 kWh m–3 for domestic to 4.7 kWh m–3 for mixed-use (commercial and domestic) water.Typical wastewater treatment plants use high concentrations of bacteria supplied with oxygen,through aeration of the water,to remove the organic matter.The overall energy consumption in conventional plants with this treatment is roughly 0.6 kWh–3 with about half of that used for aeration.Some treatment plants have become energy neutral,
mostly though the production of methane gas from solids captured or produced during treatment .MFCs offer a unique approach to directly capture the energy in water,effectively turning a wastewater treatment plant into a power plant.Exoelectrogenic bacteria release protons into the waste water and transfer electrons to electrically conductive,inert and high porosity anodes — such as carbon cloth,felt and graphite fibre brushes.