Xing Fei, Duan Liang, Zhang Haiya, Zhang Hengliang, Li Shilong
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Toxics. 2024 Feb 24;12(3):173. doi: 10.3390/toxics12030173.
A biological treatment is the core process for removing organic pollutants from industrial wastewater. However, industrial wastewater often contains large amounts of toxic and harmful pollutants, which can inhibit the activity of microorganisms in a treatment system, precipitate the deterioration of effluent quality, and threaten water ecological security from time to time. In most of the existing anaerobic biological treatment processes, toxic effects on microorganisms are determined according to the amounts of end-products of the biochemical reactions, and the evaluation results are relatively lacking. When microorganisms contact toxic substances, changes in biological metabolic activity precede the accumulation of reaction products. As sensitive units, electroactive microorganisms can generate electrical signals, a change in which can directly reflect the toxicity level. The applications of electroactive microorganisms for the toxicity monitoring of wastewater are very promising. Further attention needs to be paid to considering the appropriate evaluation index, the influence of the environment on test results, mechanisms, and other aspects. Therefore, we reviewed the literature regarding the above aspects in order to provide a research foundation for the practical application of electroactive microorganisms in toxicant monitoring.
生物处理是去除工业废水中有机污染物的核心工艺。然而，工业废水通常含有大量有毒有害污染物，这些污染物会抑制处理系统中微生物的活性，导致出水水质恶化，时刻威胁着水生态安全。在大多数现有的厌氧生物处理工艺中，对微生物的毒性影响是根据生化反应终产物的量来确定的，评估结果相对较少。当微生物接触有毒物质时，生物代谢活性的变化先于反应产物的积累。作为敏感单元，电活性微生物能够产生电信号，其变化可以直接反映毒性水平。电活性微生物在废水毒性监测中的应用前景广阔。需要进一步关注考虑合适的评估指标、环境对测试结果的影响、作用机制等方面。因此，我们综述了关于上述方面的文献，以便为电活性微生物在毒物监测中的实际应用提供研究基础。
