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.
Application and Operational Effectiveness Analysis of MBBR Technology in Wastewater Treatment Plants
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第21期
Page:
88-95
Column:
Date of publication:
2025-11-01
- Keywords:
- MBBR; wastewater treatment plant; microbial community; nitrogen and phosphorus removal; suspended biological carrier
- 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.
Last Update:
2025-11-01