期刊
BIORESOURCE TECHNOLOGY
卷 297, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.122506
关键词
Sludge reduction; Microbial metabolism; Substrate allocation; Energy conversion; Thermodynamics; Stoichiometry
资金
- National Natural Science Foundation of China [51508546, 51878091]
- Chongqing Science and Technology Commission [cstc2018jcyjAX0610]
- Fundamental Research Funds for the Central Universities [2019CDQYCH036, 2019CDXYCH0026]
Sludge reduction via microbial metabolism does not require extra energy and resource inputs and thus merits attention as an alternative approach for sustainable wastewater treatment. This review presents a summary and analysis of the existing literatures on sludge reduction based on microbial metabolism, as well as interprets these sludge reduction mechanisms using bacterial thermodynamics and stoichiometry. Future efforts should be directed toward using advanced analytical techniques to further reveal sludge reduction mechanisms. The feasibility of coupling sludge reduction and nutrient removal by microorganism metabolism needs to be further evaluated to minimize the effect of sludge reduction on nutrient removal. A comprehensive life cycle assessment of sludge reduction strategies is recommended to effectively confirm their sustainability. Full-scale research is needed to verify the results obtained from bench- and pilot-scale experiments. This review presents the future opportunities and challenges for sludge reduction based on microbial metabolism in the excess sludge disposal.
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