LIUWei-yuan,DENGBo-yuan,ZHUHai-long,et al.Efficacy of Pre?BAC Process for Pollutant Removal Based on Molecular Biology[J].China Water & Wastewater,2023,39(21):21-26.
Efficacy of Pre?BAC Process for Pollutant Removal Based on Molecular Biology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第21期
Page:
21-26
Column:
Date of publication:
2023-11-01
- Keywords:
- pre?BAC; molecular biology; pollutant removal; total number of bacteria; microbial community structure
- Abstract:
- The similarities and differences in the removal of turbidity, ammonia nitrogen, CODMn, UV254, BDOC and other pollutants, as well as the surface biomass of activated carbon, microbial diversity, community structure, and the total number of bacteria in the corresponding effluent were investigated by combining the pre-BAC process (PBAC) and the conventional BAC process (CBAC) with sand filtration in a small-scale test. Compared to the CBAC process, when PBAC was combined with sand filtration, the removal rates of ammonia nitrogen, CODMn and BDOC were increased by 5.79%, 5.04% and 16.07%, respectively, and the removal rates of turbidity and UV254 were similar. The total number of bacteria in the effluent decreased by 53.82% when the PBAC process was combined with sand filtration. Compared with the CBAC process, the biomass of the PBAC increased by 31.11%. The specificity of the community structure was significant, and the dominant species played a better role in the degradation of organic matter, indicating that the PBAC process had a better effect in ensuring the chemical safety and biological stability of drinking water.
Last Update:
2023-11-01