LIWei,HANPanting,GAOMingjie,et al.Mechanism of Micro-electrolysis Enhancing Nitrogen and Phosphorus Removal Performance in Sequencing Batch Reactor under Low Temperature[J].China Water & Wastewater,2026,42(3):85-94.
低温下微电解强化SBR脱氮除磷机制研究
- Title:
- Mechanism of Micro-electrolysis Enhancing Nitrogen and Phosphorus Removal Performance in Sequencing Batch Reactor under Low Temperature
- Keywords:
- iron-carbon micro-electrolysis; SBR; low-temperature wastewater treatment; microbial enhancer; nitrogen and phosphorus removal
- 摘要:
- 针对低温生物法处理污水效率低的问题，采用微电解颗粒作为微生物强化剂，建立微电解耦合序批式活性污泥污水处理系统（ICME-SBR），分析ICME-SBR系统低温污水处理效果，揭示微电解强化生物低温脱氮除磷机制。结果表明，微电解颗粒具有巨大的比表面积和超高活性位点，且其含有大量的铁、碳元素。ICME-SBR系统低温运行最佳工艺条件如下：微电解颗粒投加量为2.6 g/gMLSS、pH为7.0、DO为2.84~3.22 mg/L，对COD、TP、NH4+-N和TN的去除率分别达到80.57%、94.88%、70.61%和58.12%，微电解有效强化了低温污水处理效果。此外，微电解显著促进了反硝化聚磷菌代谢速率和功能酶活性。ICME-SBR系统的厌氧释磷量是进水的2.76倍，聚羟基烷酸酯（PHB）积累量和好氧分解量分别达到78.93和82.74 mg/gVSS。在好氧30 min时，系统中脱氢酶（DHA）和电子转运体（ETS）活性分别达到最大值13.34和102.88 μg/（mgVSS·h）。ICME-SBR活性污泥系统中脱氮除磷功能菌群的优势菌门为变形菌门（Proteobacteria，48.80%），优势菌属为Candidatus_Accumulibacter（8.19%），相比低温SBR分别提高了17.20%和4.65%，改善了低温污水活性污泥菌群结构。总之，ICME-SBR系统有效提高了低温污水处理效果。
- Abstract:
- Micro-electrolysis particles were employed as microbial enhancers to develop a micro-electrolysis coupled sequencing batch reactor (ICME-SBR) system to address the inefficiency of wastewater treatment using biological processes under low temperature. The performance of the ICME-SBR system in treating wastewater under low temperature conditions was evaluated, and the mechanism by which micro-electrolysis enhanced biological nitrogen and phosphorus removal under low temperature was elucidated. Micro-electrolysis particles exhibited a high specific surface area and an exceptionally high density of active sites, along with a significant content of iron and carbon elements. The optimal process conditions for the low-temperature operation of the ICME-SBR system were determined as follows: micro-electrolysis particle dosage of 2.6 g/gMLSS, pH maintained at 7.0, and dissolved oxygen (DO) ranging from 2.84 mg/L to 3.22 mg/L. Under these conditions, the removal efficiencies of COD, TP, NH4+-N, and TN reached 80.57%, 94.88%, 70.61%, and 58.12%, respectively. The application of micro-electrolysis significantly enhanced the treatment performance of wastewater under low temperature conditions. In addition, micro?electrolysis significantly enhanced the metabolic activity and functional enzyme activity of denitrifying phosphorus-accumulating organisms. The anaerobic phosphorus release in the ICME-SBR system was 2.76 times higher than that of the influent, while the accumulation of polyhydroxyalkanoates (PHB) and aerobic degradation reached 78.93 mg/gVSS and 82.74 mg/gVSS, respectively. After 30 minutes of aerobic treatment, the maximum activities of dehydrogenase (DHA) and electron transport system (ETS) in the system were recorded at 13.34 μg/(mgVSS·h) and 102.88 μg/(mgVSS·h), respectively. In the ICME-SBR activated sludge system， the dominant phylum for nitrogen and phosphorus removal functional microbial communities was Proteobacteria (48.80%)， and the dominant genus was Candidatus_Accumulibacter (8.19%), respectively. Compared with the conventional low-temperature SBR system, their relative abundances increased by 17.20% and 4.65%, respectively, indicating an improved microbial community structure in the activated sludge under low temperature. Therefore, the ICME-SBR system demonstrated enhanced performance in the treatment of low-temperature sewage.
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[1]王东琦,柴国栋,钱一石,等.特种化工废水处理工艺设计实例[J].中国给水排水,2018,34(20):87.
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