Centre for Energy and Environment, Malaviya National Institute of Technology, Jaipur 302017, Rajasthan, India.
Department of Civil Engineering, Malaviya National Institute of Technology, Jaipur 302017, Rajasthan, India.
Bioresour Technol. 2020 Aug;309:123373. doi: 10.1016/j.biortech.2020.123373. Epub 2020 Apr 11.
The aim of this work was to study the life-cycle assessment (LCA) and impact of a biogas plant based on the municipal sewage sludge (6000 m capacity biogas plant at Wastewater Treatment Plant (WWTP), Delawas, Jaipur - Rajasthan, India), analyzing the environmental effects instigated due to basic systems of biogas production and also to examine the impact of using biogas as an alternate fuel using ReCiPe and midpoint methods. The results indicatedthat the construction of plant was insignificant to the whole life cycle impacts. Biogas plant showed negative GHG emissions (-0.2385 kg CO eq/m) compared to coal-based electricity plants and digestate produced could be a good option to replace chemical fertilizer. Biogas production and agricultural spreading contributed -3.059E-08 kg CFC-11 eq/m towards beneficial effects which may be attributed to the avoidance of electricity and artificial fertilizers. The results indicated that sewage sludge-based biogas plant showed beneficial impact on the environment.
本研究旨在对基于城市污水污泥的沼气厂（印度斋浦尔德拉瓦斯污水处理厂的 6000 立方米沼气厂）进行生命周期评估（LCA）和影响分析，分析沼气生产基本系统引起的环境影响，并使用 ReCiPe 和中点方法检查使用沼气作为替代燃料的影响。结果表明，工厂的建设对整个生命周期的影响微不足道。与基于煤炭的发电厂相比，沼气厂表现出负的温室气体排放（-0.2385kg CO eq/m），并且产生的消化物可以是替代化肥的良好选择。沼气生产和农业传播对有利影响的贡献为-3.059E-08kg CFC-11eq/m，这可能归因于避免使用电力和人工肥料。结果表明，基于污水污泥的沼气厂对环境具有有益的影响。
