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首页> 外文期刊>Proceedings of the Institution of Civil Engineers >Domestic food waste - the carbon and financial costs of the options
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Domestic food waste - the carbon and financial costs of the options

机译：家庭食物垃圾-选项的碳和财务成本

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Food waste is the most difficult waste fraction of household waste to manage because it is wet and putrescible. It becomes odorous and it attracts flies and scavengers. When it sticks to other wastes, it reduces the yield of dry recyclables. Home composting has the benefit of proximity but many are unwilling or unable to practise it. Source segregation and storage for kerbside collection and treatment works for many households but not for all, participation is especially low among households in flatted properties. The in-sink food waste disposer (FWD) is used extensively in Australia, New Zealand and the USA but it has been relatively underutilised in Europe. Using data from the published literature, the global warming potentials for landfill, incineration and centralised composting were calculated to be respectively +743, +13 and -14 kgCO_2e/t food waste; anaerobic digestion was approximately -170 kgCO_2e/t food waste irrespective of whether the food waste is delivered by truck or by FWD and the public sewer. Surahammar in Sweden has provided a unique opportunity to assess the impacts of FWD at community scale and compare them with results from laboratory studies and field trials. Over 14 years, FWD installation went from zero to 50% of households voluntarily; 4-weekly influent monitoring data from the wastewater treatment works of the town show that biogas increased by 46% but flow (water use) and chemical and biological load did not change significantly.
机译：食物垃圾是家庭垃圾中最难处理的垃圾，因为它是湿的且易腐烂的。它变得有气味，并吸引苍蝇和清道夫。当它粘在其他废物上时，会降低干燥可回收物的产量。家庭堆肥具有接近的好处，但许多人不愿意或无法实践。用于许多家庭的路边收集和处理工作的源头隔离和存储，但并非所有家庭都这样，在家庭中使用扁平资产的家庭参与率特别低。嵌入式食物垃圾处理器（FWD）在澳大利亚，新西兰和美国得到了广泛的使用，但在欧洲却没有得到充分利用。利用已发表文献的数据，填埋，焚化和集中堆肥的全球升温潜能分别为+ 743，+ 13和-14 kgCO_2e / t食物垃圾；无论食物垃圾是通过卡车还是由FWD和公共下水道提供，厌氧消化大约为-170 kgCO_2e / t食物垃圾。瑞典的Surahammar提供了独特的机会来评估FWD在社区范围内的影响，并将其与实验室研究和现场试验的结果进行比较。在过去的14年中，FWD的安装自愿从零增加到50％的家庭；来自该镇废水处理厂的每周4次进水监测数据显示，沼气增加了46％，但流量（用水量）以及化学和生物负荷没有明显变化。

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