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Effect of halogenated organic pollutants on anaerobic digestion capacity of waste activated sludge and its mechanisms
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Zheng-zheng ZHAO1, Yang WU1, Xiong ZHENG1, 2, 3, *, Min LONG1, Yin-guang CHEN1, 3
China Environmental Science | 2025, 45(2) : 892 - 901
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China Environmental Science | 2025, 45(2): 892-901
• Solid Waste •
Effect of halogenated organic pollutants on anaerobic digestion capacity of waste activated sludge and its mechanisms
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Zheng-zheng ZHAO1, Yang WU1, Xiong ZHENG1, 2, 3, *, Min LONG1, Yin-guang CHEN1, 3
Affiliations
  • 1.State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
  • 2.Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
  • 3.Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
Published: 2025-02-20
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Halogenated organic compounds (HOPs), as important industrial chemicals, are extensively released into the environment during their production, transportation, and usage, ultimately accumulating in waste activated sludge (WAS) from wastewater treatment plants. Anaerobic digestion is a crucial approach for resource recovery from WAS, converting organic matter into valuable products such as volatile fatty acids and methane. However, the effects of HOPs on the anaerobic digestion capacity of WAS and their underlying mechanisms have not been systematically elucidated. Through a comprehensive literature review, this study analyzed the impacts of HOPs on methane production efficiency, key processes, and microbial communities during sludge anaerobic digestion. The results revealed that most HOPs inhibit key stages of anaerobic digestion due to their high toxicity, leading to reduced methane yield, while some low-toxicity HOPs exhibit a "hormesis effect" with promotion at low concentrations and inhibition at high concentrations. HOPs primarily regulate anaerobic digestion efficiency by affecting four critical stages: solubilization, hydrolysis, acidogenesis, and methanogenesis, with the most significant impacts on acidogenesis and methanogenesis. HOPs can influence the function of anaerobic microorganisms by altering microbial community structure, inhibiting key enzyme activities, and interfering with metabolic pathways. This study unveils the mechanisms of HOPs’ effects on sludge anaerobic digestion and proposes future research directions addressing current knowledge gaps, providing a theoretical foundation for resource recovery and safe disposal of WAS.

halogenated organic pollutants  /  waste activated sludge  /  anaerobic digestion  /  microorganism
Zheng-zheng ZHAO, Yang WU, Xiong ZHENG, Min LONG, Yin-guang CHEN. Effect of halogenated organic pollutants on anaerobic digestion capacity of waste activated sludge and its mechanisms[J]. China Environmental Science, 2025 , 45 (2) : 892 -901 .
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Year 2025 volume 45 Issue 2
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Article Info
  • Receive Date：2024-07-30
  • Online Date：2026-03-17
  • Published：2025-02-20
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  • Received：2024-07-30
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Affiliations
    1.State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
    2.Key Laboratory of Yangtze River Water Environment, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
    3.Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
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表12种不同金属材料的力学参数
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Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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