YAOWei-hao.Stress Response of Membrane Bioreactor to Disinfectants during the Commissioning Period[J].China Water & Wastewater,2025,41(5):81-87.
调试启动期膜生物反应器对消毒剂的应激响应
- Title:
- Stress Response of Membrane Bioreactor to Disinfectants during the Commissioning Period
- 摘要:
- 采用白羽鸡孵化场含消毒液的冲洗废水为进水，考察了调试启动期AO-MBR系统中好氧污泥对于消毒剂冲击的应激响应。结果表明，水质与工况同步出现了对冲击的应激响应现象。系统在第3天出现了恶化（污泥絮体破碎，跨膜压差TMP和产水溶解性有机物DOM升高等），在第7天后逐步恢复。进一步使用16S rRNA与ITS手段对不同时序的活性污泥进行测序和相关性分析，筛选出了与此变化强相关的细菌和真菌。初步验证了采用一体化MBR设备处理白羽鸡孵化场废水的可行性，并从降低浓度、增加营养物质和间歇运行三个方面提出了应对消毒剂冲击的建议和措施。
- Abstract:
- The stress response of aerobic sludge to disinfectant exposure in an AO-MBR system during the commissioning period was investigated using washing wastewater containing disinfectant from a white feather chicken hatchery as the influent. The water quality and working conditions exhibited a synchronous stress response to the impact. The system performance deteriorated on Day 3, marked by the issues such as disintegration of sludge flocs, a rise in transmembrane pressure (TMP), and an increase in dissolved organic matter (DOM), and it began to gradually recover after Day 7. 16S rRNA and ITS sequencing methods were employed to conduct correlation analysis on activated sludge samples collected at different time series. Bacteria and fungi that exhibited strong associations with these changes were subsequently identified. This experiment preliminarily validated the feasibility of utilizing integrated MBR for treating wastewater from white feather chicken hatcheries. Furthermore, it proposed strategies in three key aspects to deal with disinfectants: reducing pollutant concentrations, enhancing nutrient levels, and implementing intermittent operation modes.
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