Sand and multi-media filters
Sand and multi-media filters
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Overview
Sand and multi-media filters are the first step of water pretreatment: water passes through graded layers of filter media that hold back suspended solids and turbidity before they reach the fine filters and the reverse osmosis membranes.
They are used ahead of RO desalination plants, in well and surface water treatment, and in industrial water lines. The number and size of the filters and the media are chosen from the water analysis and the required flow.
ALPHA® for Environmental Technologies carries out the site survey and water analysis, then the design, supply, installation and commissioning, with a warranty on the plant components and spare parts and technical support 24 hours a day, seven days a week.
Features
- Lower turbidity and suspended solids: protection for fine filters and membranes
- Longer membrane life: less fouling and fewer chemical cleanings
- Backwash: the media is cleaned periodically instead of replaced
- Designed from the water analysis: media and sizes chosen from the technical study
- Easy maintenance and available spare parts