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Slow Sand Filters for the 21st Century: A Review
John K Maiyo1, Sruthi Dasika1, Chad T Jafvert2
1Division of Environmental and Ecological Engineering, Purdue University, 500 Central Drive, West Lafayette, IN 47907, USA.
International Journal of Environmental Research and Public Health
|January 21, 2023
Summary
Safe drinking water is a global challenge, especially in rural areas. Slow sand filters (SSF) offer an effective, low-cost solution for improving water quality and reducing health risks.
Area of Science:
- Environmental Engineering
- Public Health
Background:
- Access to safe drinking water is a critical global issue, disproportionately affecting rural populations in developing nations.
- Unsafe water leads to significant health burdens, including water, sanitation, and hygiene (WASH)-related diseases and deaths, alongside economic challenges.
Purpose of the Study:
- To review adaptations and performance of slow sand filters (SSF) for contaminant removal.
- To specifically address the effectiveness of SSFs in removing turbidity and microbial contaminants relevant to rural populations.
Main Methods:
- Review of historical and recent literature on slow sand filter (SSF) design and application.
- Analysis of performance data concerning contaminant removal, focusing on turbidity and microbial agents.
Main Results:
- Slow sand filters (SSF) effectively reduce turbidity, dissolved organic chemicals, and associated taste/odor problems.
- The removal of contaminants by SSFs enables cost-effective disinfection methods like chlorination.
Conclusions:
- Slow sand filters (SSF) are a proven, adaptable, and low-cost technology for improving drinking water quality in resource-limited rural settings.
- Continued research and adaptation of SSFs are crucial for addressing global safe drinking water challenges.
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