Energy-Saving and Economic Analysis of Anaerobic Reactor Heating System Based on Biogas and Sewage Source Heat Pump

  • Shouwen Sheng
  • Fang WangEmail author
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


Anaerobic treatment technology is a common technology for treating starch wastewater. Relevant research shows that heating the wastewater to the optimum operating temperature can ensure the work efficiency of anaerobic reactor. However, the water from anaerobic reactor has a high temperature and generates lots of waste heat. Therefore, we propose a biogas generator set–sewage source heat pump combined heating system. Compared with the obsolete traditional heating method of single heat source (biogas boiler), this new method can not only save energy consumption, but also heat the anaerobic reactor continuously and steadily. We analyzed the energy-saving and economy of the biogas generator set–sewage source heat pump heating system through theoretical calculation. The results show that compared with the single heat source biogas boiler heating system, the system has remarkable energy-saving effect, the primary energy-saving is about 163.00–358.35 kW, and the annual cost of the combined heat source heating system is about 72% of that of the biogas boiler heating system.


Anaerobic reactor Sewage source heat pump Energy-saving Economic analysis 



The project is supported by the project “Research on Waste Heat Recovery System of Sweet Potato Starch Wastewater Anaerobic Reactor” (NDYC-KF-2017-08)


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjingPeople’s Republic of China
  2. 2.Nanjing University YanCheng Institute of Environmental Technology and EngineeringYanChengPeople’s Republic of China

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