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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
  • 210 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

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.

Keywords

Anaerobic reactor Sewage source heat pump Energy-saving Economic analysis 

Notes

Acknowledgements

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

References

  1. 1.
    Deng, S.B., Bai, R.B., Hu, X.M., et al.: Characteristics of a bioflocculant produced by Bacillus mucilaginosus and its use in starch wastewater treatment. Appl. Microbiol. Biotechnol. 60(5), 588–593 (2003)CrossRefGoogle Scholar
  2. 2.
    Guo, X.Y., Nian, Y.G., Yan, H.H., et al.: Current status and application prospect of resource utilization of starch wastewater. Acta Environ. Eng. 6(2), 117–126 (2016)Google Scholar
  3. 3.
    Zhu, G., Li, J., Liu, C., et al.: Simultaneous production of bio-hydrogen and methane from soybean protein processing wastewater treatment using anaerobic baffled reactor (ABR). Desalination Water Treat. 53(10), 2675–2685 (2015)CrossRefGoogle Scholar
  4. 4.
    Ariunbaatar, J., Panico, A., Esposito, G., et al.: Pretreatment methods to enhance anaerobic digestion of organic solid waste. Appl. Energy 123, 143–156 (2014)CrossRefGoogle Scholar
  5. 5.
    Zhou, D.F, Jin, Y.A., Yang, C.H., et al.: Heating biogas slurry with waste heat of boiler to improve gas production. Biogas, China, 27(6), 28–30 (2009)Google Scholar
  6. 6.
    Frijns, J., Hofman, J., Nederlof, M.: The potential of (waste) water as energy carrier. Energy Convers. Manag. 65(1), 357–363 (2013)CrossRefGoogle Scholar
  7. 7.
    Gao, C.M.: Biogas power generation and waste heat utilization. Urban Manag. Technol. 7(5), 217–219 (2005)Google Scholar
  8. 8.
    Lübken, M., Wichern, M., Schlattmann, M., et al.: Modelling the energy balance of an anaerobic digester fed with cattle manure and renewable energy crops. Water Res. 41(18), 4085–4096 (2007)CrossRefGoogle Scholar
  9. 9.
    Wu, X.H., Sun, D.X.: Energy efficiency analysis of urban primary sewage heat exchanger. Renew. Energy 25(02), 73–75 (2007)Google Scholar

Copyright information

© 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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