期刊
PROCESSES
卷 10, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/pr10040788
关键词
sewage water; anaerobic digestion; biogas; sewage-sludge treatment; biogas combined cycle; waste management
资金
- Petrobras S/A [5850.0107386.18.9]
- CNPq-Brazil [311076/2017-3]
This study mainly explores the improvement of bioenergy production and economic performance in sewage treatment plants, the use of technology alternatives for energy self-sufficiency, new techniques for sewage sludge management aiming at bioenergy production, and the implementation of sewage treatment with bioenergy production and carbon capture and storage.
Sewage-water treatment comprehends primary, secondary, and tertiary steps to produce reusable water after removing sewage contaminants. However, a sewage-water treatment plant is typically a power and energy consumer and produces high volumes of sewage sludge mainly generated in the primary and secondary steps. The use of more efficient anaerobic digestion of sewage water with sewage sludge can produce reasonable flowrates of biogas, which is shown to be a consolidated strategy towards the energy self-sufficiency and economic feasibility of sewage-water treatment plants. Anaerobic digestion can also reduce the carbon footprint of energy sources since the biogas produced can replace fossil fuels for electricity generation. In summary, since the socioeconomic importance of sewage treatment is high, this review examined works that contemplate: (i) improvements of sewage-water treatment plant bioenergy production and economic performances; (ii) the exploitation of technology alternatives for the energy self-sufficiency of sewage-water treatment plants; (iii) the implementation of new techniques for sewage-sludge management aiming at bioenergy production; and (iv) the implementation of sewage-water treatment with bioenergy production and carbon capture and storage.
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