WANGHe,PENGJin-yu,WANGQuan-yong,et al.Effect of Ozone/Biological Activated Carbon Fluidized Bed Pretreatment on Water Purification Efficiency[J].China Water & Wastewater,2023,39(5):46-52.
Effect of Ozone/Biological Activated Carbon Fluidized Bed Pretreatment on Water Purification Efficiency
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第5期
Page:
46-52
Column:
Date of publication:
2023-03-01
- Keywords:
- pre-type ozone/biological activated carbon; fluidized bed; micro-pollution raw water; bromate
- Abstract:
- The effect of pre-type ozone/biological activated carbon (O3-BAC) fluidized bed pretreatment on purification efficiency of raw water from a reservoir in Yellow River basin was investigated, and the treatment performance was compared with the terminal advanced treatment process of post-type O3-BAC. When the pre-type O3-BAC process was adopted, the total organic carbon (TOC), biodegradable dissolved organic carbon (BDOC) and ammonia nitrogen (NH3-N) in the effluent were reduced by 11.8%, 12.7% and 72.1% respectively compared with those in the effluent when the post-type O3-BAC process was adcpted, and the particle number and turbidity in the effluent were reduced to (125±8) CNT/mL and (0.16±0.03) NTU, respectively. The oxidation by-products such as bromate and formaldehyde in the effluent all met the limits specified in Standards for Drinking Water Quality (GB 5749-2022). The pre-type O3-BAC fluidized bed and conventional treatment process had a synergistic effect on pollutants removal, and all indicators in the effluent were superior to those in the effluent from the post-type O3-BAC process. The results can guide the development and engineering practice of efficient purification process for micro-polluted raw water treatment.
Last Update:
2023-03-01