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AWWA ACE58257
- Design and Construction of Packaged Slow Sand Filtration with Preozonation and Roughing Filtration - a Case Study
- Conference Proceeding by American Water Works Association, 06/15/2003
- Publisher: AWWA
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Effective conventional slow sand filter use is typically limited to good quality raw watersources that are low in color, turbidity, and algal content. Conventional slow sand filterplants are also typically custom-engineered and constructed with cast-in-place concretethat can make this treatment option relatively high in capital cost for small systems(<0.5 MGD capacity). This paper presents recent pretreatment enhancementsthat have been proven effective in the field for extending the slow sand filtration processfor marginal water supply sources, along with a case study of a pre-fabricatedozone/roughing filter/slow sand filter installation in North Haven, Maine. Includes 7 references, tables, figure.
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