ZHANGJing,TIANYu,QITian-tian,et al.Activated Carbon Filter for Adsorption and Desorption of Trichloromethane and Its Microbial Effects[J].China Water & Wastewater,2024,40(13):43-48.
Activated Carbon Filter for Adsorption and Desorption of Trichloromethane and Its Microbial Effects
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第13期
Page:
43-48
Column:
Date of publication:
2024-07-01
- Keywords:
- waterworks; activated carbon filter; trichloromethane; adsorption; desorption; microbial effect
- Abstract:
- Clarifying the impact of activated carbon filter (ACF) on trichloromethane (TCM) is beneficial for waterworks to control the effluent TCM concentration. The pilot ACF system combined with gas and gas-water backwashing was utilized to analyze the adsorption and desorption of TCM. The impact of ACF on TCM precursors was assessed by measuring the fromation potential of disinfection by-products from algae, bacteria, and dissolved organic matters. The activated carbon in the ACF exhibited adsorption and desorption effects on the TCM generated by pre-chlorination. Following backwashing, the adsorption capacity of activated carbon for TCM tended to reach saturation within 1 day. However, the saturated activated carbon could rapidly release TCM when the influent TCM concentration is low. This led to an increase in the effluent TCM concentration from the ACF. Furthermore, algae and bacteria made minimal contributions to the formation potential of disinfection by-products. Additionally, activated carbon exhibited a significant adsorption effect on TCM precursors. Therefore, restoring the adsorption capacity of ACF was beneficial for controlling effluent TCM concentration from waterworks.
Last Update:
2024-07-01