Patterns of Arsenic Release in Drinking Water Distribution Systems
| Autor: | Christy Muhlen, Lili Wang, Abraham S.C. Chen, Darren A. Lytle, Simoni Triantafyllidou, Thomas J. Sorg |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
inorganic chemicals
Treated water integumentary system chemistry.chemical_element Ocean Engineering Manganese Oceanography Article Distribution system Treatment complications chemistry Source water Environmental chemistry Retrospective analysis Environmental science Waste Management and Disposal Arsenic Water Science and Technology |
| Zdroj: | AWWA Water Sci |
| Popis: | Retrospective analysis of 20 water systems from the USEPA's Arsenic Demonstration Program revealed three patterns of arsenic levels at the tap, after arsenic treatment of the source well water. Following an initial destabilization period, Pattern A systems (6/20 with low iron/manganese in source water and plastic piping) had arsenic concentrations that did not change as water traveled to consumer taps (conservative contaminant behavior). Pattern B systems (8/20 with high iron/manganese in source water and iron piping) had consistently higher arsenic concentrations at consumer taps, above the arsenic content of incoming treated water, for months to more than a year after arsenic treatment (non-conservative behavior). Pattern C systems (6/20 with additional occasional arsenic treatment complications) experienced multiple arsenic spikes at consumer taps (non-conservative and unpredictable behavior). These field observations suggest that in some water distribution systems arsenic may linger long after it has been removed at its source. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|