ArticleEnvironmental science & technology2026
Control of Brominated and Iodinated DBPs within a Drinking Water Distribution System with Granular Activated Carbon and Biological Filtration.
Article in Environmental science & technology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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11 authors.
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Abstract
This study evaluated the effectiveness of parallel field-scale granular activated carbon (GAC) and biological activated carbon (BAC) filters for removing brominated and iodinated disinfection byproducts (Br-/I-DBPs) from a drinking water distribution system and associated changes in calculated additive toxicity (CAT). Over an 11 month period, 23 of 37 monitored DBP species were detected in the feedwater, with Br-/I-DBPs constituting 72% of trihalomethanes (THMs), 20% of haloaldehydes (HALs), 67% of haloacetonitriles (HANs), and 48% of haloacetic acids (HAAs). GAC effectively decreased all ambient HANs, HALs, and HAAs to below method reporting limits and completely removed THMs up to 3000 bed volumes, resulting in a 99% reduction in CAT. BAC removed all HANs, HALs, and HAAs but showed limited THM removal; however, CAT was reduced by 99%. Following GAC or BAC treatments, supplemental chlorination led to the formation of THMs, HALs, and HAAs─though no HANs─restoring 30-55% of the original CAT, primarily driven by brominated HALs. Microbial analysis revealed taxa, (e.g.,
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