污水处理厂（WWTP）两种不同沼气三联发电方案的经济、环境和可持续性分析

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-04-17 DOI:10.1016/j.energy.2025.136096

Siamak Mirmasoumi , Rahim Khoshbakhti Saray , Nima Asgari

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引用次数: 0

摘要

本研究的目的是评估污水处理厂（WWTPs）中两个CCHP系统的性能：一个由微型燃气轮机（AD-CCHP-MGT）驱动，另一个由内燃机（AD-CCHP-ICE）驱动。污水处理厂厌氧消化（AD）单元提供沼气，并通过实验消化试验对沼气进行了分析。这两种沼气燃料系统都将余热用于各种应用，包括原料预处理。AD条件为55°C的亲热过程，90°C的热预处理0.5 h。结果表明，AD- cchp - ice系统的功率自给率为43.41%，AD- cchp - mgt系统的功率自给率为30.90%。此外，AD-CCHP-ICE系统提供了低成本的能源产品和更多的电力输出，从而缩短了投资回收期。此外，除去AD投资成本，系统的投资回收期几乎缩短了一半。基于火用的环境和可持续性分析表明，AD-CCHP-ICE的CO2比排放率低于AD-CCHP-MGT。AD-CCHP-ICE的环境改善指数提高了1.5倍，更加环保。此外，AD-CCHP-ICE比AD-CCHP-MGT表现出更大的可持续性指数，因为系统之间的火用破坏和损失率不同，遵循相同的趋势。

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Exergy-based economic, environmental, and sustainability analysis of two different biogas-fueled trigeneration proposals for a wastewater treatment plant (WWTP)

The objective of this study is to assess the performance of two CCHP systems in wastewater treatment plants (WWTPs): one powered by a micro gas turbine (AD-CCHP-MGT) and the other by an internal combustion engine (AD-CCHP-ICE). The anaerobic digestion (AD) unit of the WWTP provides biogas, which is analyzed through experimental digestion tests. Both the biogas fueled systems use the waste heat for various applications including feedstock pretreatment. The AD condition is thermophilic process (55 °C) with thermal pretreatment at 90 °C for 0.5 h. The results indicate that the self-sufficiency of power for AD-CCHP-ICE system is 43.41 %, whereas it is 30.90 % for AD-CCHP-MGT system. Furthermore, AD-CCHP-ICE system provides low-cost energy products and more electric power output, resulting in a shorter payback period. Additionally, excluding the AD investment cost, the payback period of systems are almost halved. The exergy-based environmental and sustainability analyses indicate that the specific CO₂ emission rate of AD-CCHP-ICE is lower than that of AD-CCHP-MGT. With an environmental improvement index 1.5 times higher, the AD-CCHP-ICE is more environmentally friendly. Moreover, AD-CCHP-ICE demonstrates a larger sustainability index than AD-CCHP-MGT, as the exergy destruction and loss rates differ between the systems, following the same trend.

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.