A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comparing Plant‐Scale Dual‐ and Mixed‐Media Filters
Full‐scale dual‐ and mixed‐media filters were compared side by side at nominal loadings of 3, 4, 5, and 6 gpm/sq ft for eight months using flocculation and sedimentation pretreatment. Both media produced an effluent of <0.5 ntu at all loadings. The mixed‐media filter was more successful than the dual‐media filter for attaining a potential 0.1 ntu effluent standard using the plant's current pretreatment. The media performed equally in removing residual aluminum and would require about the same initial filter to waste, roughly 0.5 percent of the run. Neither media showed turbidity breakthrough when subjected to a 33 percent flow surge or showed significant media loss. The mixed media showed slightly higher energy costs, which were not considered significant. For replacing media in the eight remaining filters, the mixed media was estimated to cost $48,000 more for the media itself and installation and to cost between $4,000 and $17,000/year more for backwash water.
Comparing Plant‐Scale Dual‐ and Mixed‐Media Filters
Full‐scale dual‐ and mixed‐media filters were compared side by side at nominal loadings of 3, 4, 5, and 6 gpm/sq ft for eight months using flocculation and sedimentation pretreatment. Both media produced an effluent of <0.5 ntu at all loadings. The mixed‐media filter was more successful than the dual‐media filter for attaining a potential 0.1 ntu effluent standard using the plant's current pretreatment. The media performed equally in removing residual aluminum and would require about the same initial filter to waste, roughly 0.5 percent of the run. Neither media showed turbidity breakthrough when subjected to a 33 percent flow surge or showed significant media loss. The mixed media showed slightly higher energy costs, which were not considered significant. For replacing media in the eight remaining filters, the mixed media was estimated to cost $48,000 more for the media itself and installation and to cost between $4,000 and $17,000/year more for backwash water.
Comparing Plant‐Scale Dual‐ and Mixed‐Media Filters
Barnett, Elliott (author) / Robinson, R. Bruce (author) / Loveday, D. Wayne (author) / Snyder, Joe (author)
Journal ‐ American Water Works Association ; 84 ; 76-81
1992-06-01
6 pages
Article (Journal)
Electronic Resource
English
Dual Media Filters , Flocculation , Turbidity , Aluminum , Costs , Research , Filter Media , Sedimentation , Performance
Comparative performance of dual‐ and mixed‐media filters
| Wiley | 1981
Comparing Mixed-Media and Conventional Slow-Sand Filters for Arsenic Removal from Groundwater
| DOAJ | 2018
Intermixing of Dual Media and Multimedia Granular Filters
| Wiley | 1975