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Anaerobic digestion and future energy

机译：厌氧消化和未来的能量

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Anaerobic digestion (AD) principally uses existing waste feedstocks, sometimes in conjunction with purpose-grown crops, helping to reduce emissions from waste, heat, electricity, transport and agriculture. So AD is a key part of a future low-carbon, circular economy that turns wastes into renewable resources. AD has a potentially important role to play in the production of low-carbon heat; according to the Anaerobic Digestion and Bioresources Association (ADBA), biomethane - produced when biogas is upgraded - could meet 30 per cent of the UK's domestic gas demand and abate 50m tonnes of CO_2-equivalent over the next 25 years, as well as helping to provide energy and food security. In the past 10 years, the AD industry has grown from a capacity of 170 megawatts electrical-equivalent (MWe-e) in 2008, to 899MWe-e today. There are now 648 AD plants across the country, producing renewable energy and natural fertiliser. AD growth is currently most notable in biomethane, where around 30 new facilities are due to connect to the gas grid within the next couple of years, on the back of tariffs under the government's Renewable Heat Incentive. These new facilities should add around 233m cubic metres of capacity - enough to power almost 200,000 homes each year. Production of biomethane as a transport fuel is also being facilitated by the Renewable Transport Fuel Obligation. In addition, the number of AD facilities recycling inedible food waste is likely to grow over the next decade, as more local authorities in England introduce separate food-waste collections in the wake of legislation proposed in the resources and waste strategy. ADBA estimates that the amount of food waste diverted from landfill as a result could lead to 80 new food-waste AD facilities. This would increase industry capacity by around 187MWe-e (the equivalent of Fellside Power Station), reducing UK GHG emissions by 1.5m tonnes of CO_2-equivalent - or 2.4 per cent.
机译：Anaerobic Digestion（广告）主要使用现有的废料原料，有时与目的种植的作物结合，有助于减少废物，热电，电力，运输和农业的排放。因此，广告是未来低碳，循环经济的关键部分，转向可再生资源的废物。广告在低碳热量中发挥潜在的重要作用;根据厌氧消化和生物化癖者协会（Adba），沼气升级时产生的生物甲烷 - 可以满足英国国内燃气需求的30％，并在未来25年内减少50米吨的CO_2相同，以及帮助提供能源和粮食安全。在过去的10年里，广告行业已从2008年的170兆瓦的电量（MWE-E）的能力增加到899mme-e。全国范围内有648种广告植物，生产可再生能源和天然肥料。 AD增长目前在生物甲烷中最值得注意的是，大约30个新设施是由于在未来几年内连接到煤气网，在政府可再生热激励下的关税后面。这些新设施应增加大约23300万立方米的能力 - 足以每年为近20万家的供电。通过可再生运输燃料迫使，还促进了作为运输燃料作为运输燃料的生物甲烷的生产。此外，随着英格兰的更多地方当局在下一年内，可在未知的食物垃圾中回收不可食用的食物垃圾的次数可能会在资源和废物策略提出的立法之后引入单独的食品废物收藏品。 Adba估计，由于垃圾填埋场转移的食物废物量可能导致80个新的食品废物广告设施。这将在187米威-E（相当于谷底发电站），将工业能力提高到大约187毫克），减少了英国温室气体排放量1.5亿吨CO_2相当 - 或2.4％。

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    《Wastes Management》 |2019年第3期|39-40|共2页
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