XUZi-rong,XIAOFan,CHENTie-cheng,et al.Optimization of Ozone-Activated Carbon Filtration Process Combination for 2-MIB Removal in Advanced Treatment Waterworks[J].China Water & Wastewater,2025,41(6):69-76.
Optimization of Ozone-Activated Carbon Filtration Process Combination for 2-MIB Removal in Advanced Treatment Waterworks
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第6期
Page:
69-76
Column:
Date of publication:
2025-03-17
- Keywords:
- 2-MIB; ozone-activated carbon filtration; algae; bromate
- Abstract:
- In order to put forward a solution to 2-methylisoborneol (2-MIB) problem in waterworks using ozone-activated carbon filtration process, a series of production tests and exploration of 2-MIB removal rules were carried out. The results showed that the removal rate of 2-MIB in activated carbon filtration was 50%-70%, the 2-MIB was obviously released after the main chlorination, and the effluent 2-MIB was greater than 10 ng/L. When the 2-MIB in raw water was 10-30 ng/L, the combination of post-ozonation/activated carbon filtration should be adopted. The removal rate of 2-MIB was 62%-75%, the total amount of ozone dosage was approximately 0.7-0.8 mg/L, and the effluent 2-MIB was lower than 10 ng/L. When the 2-MIB in raw water was 30-100 ng/L, the combination of pre-ozonation/post-ozonation/activated carbon filtration should be adopted. The removal rate of 2-MIB was 92%-97%, the total amount of ozone dosage was approximately 1.0-1.1 mg/L, and the effluent 2-MIB was less than 10 ng/L. The algae concentration in activated carbon filtration increased by 33.4%, which could be alleviated by shading measures. When the total amount of ozone dosage was lower than 1.4 mg/L, the coagulation sedimentation tank and activated carbon filtration had excellent effect on bromate removal, and the two?stage dosage of ozone had lower risk of exceeding the standard of bromate than that of single stage dosage.
Last Update:
2025-03-17