Winter Maintenance Wash-Water Heavy Metal Removal Pilot Scale Evaluation
| Autor: | Mufuta J. Tshimanga, William H. Schneider, Philip B Custer, Christopher M. Miller |
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| Rok vydání: | 2016 |
| Předmět: |
Article Subject
Maximum flow rate Waste management Chemistry 010401 analytical chemistry Pilot scale chemistry.chemical_element General Chemistry Zinc 010501 environmental sciences 01 natural sciences 0104 chemical sciences lcsh:Chemistry Metal Brine lcsh:QD1-999 Settling Wash water visual_art visual_art.visual_art_medium Winter maintenance 0105 earth and related environmental sciences |
| Zdroj: | Journal of Chemistry, Vol 2016 (2016) |
| ISSN: | 2090-9071 2090-9063 |
| DOI: | 10.1155/2016/5347154 |
| Popis: | To encourage sustainable engineering practices, departments of transportation are interested in reusing winter maintenance truck wash water as part of their brine production and future road application. Traffic-related metals in the wash water, however, could limit this option. The objective of this work was to conduct a pilot scale evaluation of heavy metal (copper, zinc, iron, and lead) removal in a filtration unit (maximum flow rate of 45 L/minute) containing proprietary (MAR Systems Sorbster®) media. Three different trials were conducted and approximately 10,000 L of wash water collected from a winter maintenance facility in Ohio was treated with the pilot unit. Lab studies were also performed on six wash-water samples from multiple facilities to assess particle size removal and estimate settling time as a potential removal mechanism during wash-water storage. Pilot unit total metal removal efficiencies were 79%, 77%, 63%, and 94% for copper, zinc, iron, and lead, respectively. Particle settling calculation estimates for copper and zinc show that 10 hours in storage can also effectively reduce heavy metal concentrations in winter maintenance wash water in excess of 70%. These pilot scale results show promise for reducing heavy metal concentrations to an acceptable level for reuse. |
| Databáze: | OpenAIRE |
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