• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Scientific Reports >Energy use and carbon footprints differ dramatically for diverse wastewater-derived carbonaceous substrates: An integrated exploration of biokinetics and life-cycle assessment
【2h】

Energy use and carbon footprints differ dramatically for diverse wastewater-derived carbonaceous substrates: An integrated exploration of biokinetics and life-cycle assessment

机译：各种废水来源的碳质底物的能源使用和碳足迹差异显着：生物动力学和生命周期评估的综合探索

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Energy neutrality and reduction of carbon emissions are significant challenges to the enhanced sustainability of wastewater treatment plants (WWTPs). Harvesting energy from wastewater carbonaceous substrates can offset energy demands and enable net power generation; yet, there is limited research about how carbonaceous substrates influence energy and carbon implications of WWTPs with integrated energy recovery at systems-level. Consequently, this research uses biokinetics modelling and life cycle assessment philology to explore this notion, by tracing and assessing the quantitative flows of energy embodied or captured, and by exploring the carbon footprint throughout an energy-intensive activated sludge process with integrated energy recovery facilities. The results indicate that energy use and carbon footprint per cubic meter of wastewater treated, varies markedly with the carbon substrate. Compared with systems driven with proteins, carbohydrates or other short-chain fatty acids, systems fed with acetic acid realized energy neutrality with maximal net gain of power from methane combustion (0.198 kWh) and incineration of residual biosolids (0.153 kWh); and also achieved a negative carbon footprint (72.6 g CO2). The findings from this work help us to better understand and develop new technical schemes for improving the energy efficiency of WWTPs by repurposing the stream of carbon substrates across systems.
机译：能源中立和减少碳排放量是提高废水处理厂（WWTP）可持续性的重大挑战。从废水含碳底物中收集能量可以抵消能源需求并实现净发电；然而，关于碳质底物如何影响污水处理厂的能量和碳影响以及系统级综合能量回收的研究还很有限。因此，这项研究通过跟踪和评估所体现或捕获的能量的定量流，并通过集成了能量回收设施的高能耗活性污泥过程中的碳足迹，利用生物动力学模型和生命周期评估语言学来探索这一概念。结果表明，所处理的废水的能耗和每立方米碳足迹随碳基质的变化而显着变化。与以蛋白质，碳水化合物或其他短链脂肪酸驱动的系统相比，以乙酸为原料的系统实现了能量中立，甲烷燃烧（0.198 netkWh）和剩余生物固体焚化（0.153 kWh）的最大净纯功率得以实现；并且实现了负碳足迹（72.6µg CO2）。这项工作的发现有助于我们通过重新利用跨系统的碳底物流来更好地理解和开发新技术方案，以提高污水处理厂的能源效率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号