WEIShi-fan,TIANMao-jia,LIUYa-dong,et al.Application and Operational Effectiveness Analysis of MBBR Technology in Wastewater Treatment Plants[J].China Water & Wastewater,2025,41(21):88-95.
MBBR技术在污水处理厂中的应用及运行效果分析
- Title:
- Application and Operational Effectiveness Analysis of MBBR Technology in Wastewater Treatment Plants
- Keywords:
- MBBR; wastewater treatment plant; microbial community; nitrogen and phosphorus removal; suspended biological carrier
- 摘要:
- 贵州茅台镇第二污水处理厂采用A2OAO工艺，在好氧区投加悬浮载体填料（即MBBR填料），解决了传统工艺抗冲击负荷能力差及出水水质不稳定的难题。通过悬浮生物载体强化泥膜协同作用，在高冲击负荷条件下系统仍实现了稳定的高效脱氮除磷与有机物降解效果，出水COD、BOD5、NH3-N、TN、TP均值分别为19.12、3.44、0.18、4.23、0.13 mg/L，TN达到一级A标准，其他指标稳定达到地表水Ⅳ类标准。MBBR区微生物群落分析显示，生物膜相富集硝化菌（Nitrospira的相对丰度为11.10%），活性污泥相主导反硝化菌（Thermomonas等合计丰度为43.47%），功能基因（如narG、nirK）的高表达支撑了碳氮磷代谢网络的高效协同。该工艺抗冲击负荷能力强，COD达1 000 mg/L时仍能稳定运行，且生化段平均电耗为0.359 kW·h/m3。该项目的成功实施及稳定运行为高标准污水处理厂建设提供了示范案例。
- Abstract:
- The Second Wastewater Treatment Plant in Maotai Town adopts the A2OAO process and suspended carrier filler (MBBR filler) is added in the aerobic zone, which solves the problems of poor impact load resistance of the traditional process and unstable effluent quality. By enhancing the synergistic effect of suspended biological carriers, the system achieved stable and efficient nitrogen and phosphorus removal, as well as organic matter degradation under high impact load conditions. The average concentration of COD, BOD5, NH3-N, TN, and TP in the effluent were 19.12 mg/L, 3.44 mg/L, 0.18 mg/L, 4.23 mg/L, and 0.13 mg/L, respectively, which reached class Ⅳ standard of surface water (TN reached the first level A standard). Microbial community analysis in the MBBR area showed that the biofilm phase enriched nitrifying bacteria (Nitrospira， 11.10%), while the activated sludge phase dominated denitrifying bacteria (such as Thermomonas, 43.47%). The high expression of functional genes (such as narG, nirK) supported the efficient synergy of carbon, nitrogen, and phosphorus metabolism networks. The process has strong resistance to impact loads and can still operate stably when COD fluctuates up to 1 000 mg/L. The average power consumption of the biochemical section is 0.359 kW·h/m3. The successful implementation and stable operation of this project provide a demonstration case for the construction of high standard wastewater treatment plants.
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