Sand and Multi Media Filters
Sand and Multi Media Filters
Sand and Multi-Media filters are used to remove particles from water. Although Sand and Multi-Media are used interchangeably, Sand typically is a single component while Multi-Media is 5 components comprising the bed in the tank.
Sand and Multi-Media Filters can be single tank as well as Duplex and even Triplex depending on requirements.
Sand and Multi-Media Filters can be either Fiberglass, Steel or even Stainless Steel.
Multi-Media Service and Reconditioning Values
Multi-Media Filters – Particle Removal:
- Service Flow Rates 5 to 15 GPM/SF – Standard 10
- Backwash – 10 to 15 Minutes @ 15 GPM/SF
- Forward Rinse – 2 Minutes @ 10 GPM/SF
Multi-Media Service and Reconditioning Values.
Multi-Media Filters – Particle Removal:
- Service Flow Rates 5 to 15 GPM/SF – Standard 10
- Backwash – 10 to 15 Minutes @ 15 GPM/SF
- Forward Rinse – 2 Minutes @ 10 GPM/SF
We use the Tank Flow Rate Table above and the Service & Reconditioning Values to estimate how a Tank Based Water System will work. You can first determine how large a tank based system you will need by looking at the Service Flow Rates and then checking for Tank Size in the table.
For example, for City Water particle removal at 50 GPM use 10 GPM/SF as the Standard Service flow rate. To get to 50 gpm in the table, at 10 GPM/SF we see a 30 inch tank will work.
Finally, we also determine from the table, how much water the softener will use for regeneration.
- Backwash – 10 Minutes @ 10 GPM/SF
10 X 49.1 = 491 Gallons - Forward Rinse – 2 Minutes @ 10 GPM/SF
2 X 49.1 = 98.2 Gallons - Total Gallons Used = 589.2
Other tank based water treatment systems include:
- Greensand Filters
- Water Softeners
- Sand and Multi-Media Filters
- Tank Based Carbon Filters
- Carbon Filters for Dechlorination
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