Filmtec TW30-1812-100 100 GPD Filmtec Residential RO Membrane

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Price: $34.99 $28.25   

Product Feature

• New - Retail
• Filmtec TW30-1812-100
• Dow Filmtec Tw30-1812-100 Reverse Osmosis Membrane

Product Description

Dow Filmtec TW30-1812-100 Reverse Osmosis Membrane Specs: Dimensions: 1. 75" W X 11. 75" L Maximum Operating Temperature: 113?F (45?C) TW30-1812-36 ΔP (psig) at Flow Rate (gpd): 50 psig at 100 gpd (Permeate flows for individual elements may vary +/- 20%) Maximum Operating Pressure: 300 psig (21 bar) Maximum Feed Flow Rate: 2. 0 gpm (7. 6 lpm) Maximum Feed Silt Density Index (SDI): 5 Free Chlorine Tolerance: (Maximum temperature for continuous operation above pH 10 is 95?F (35?C)) pH Range, Short Term Cleaning (30 min. ): 1-12 Dow Filmtec TW30-1812-100 Reverse Osmosis Membrane Materials of Construction: Membrane Type: Polyamide Thin-Film Composite.

Filmtec TW30-1812-100 100 GPD Filmtec Residential RO Membrane Review

Remember that any RO membrane must be operated at a ratio of 5:1 for best performance.
That means that the cross flow is 5 x the permeate flow per membrane.
If your membrane is permeating 100GPD (263ml/minute)then the correct restrictor would be 1500ml/minute) or a 15% recovery
you can however, increase your system recovery by adding membranes in series (up to 3)feeding the consecutive membrane with the concentrate of the previous and then placing the same 1500ml/minute restrictor at the tail end. The permeate would be trippled to 789, the concentrate would still be 1500ml/minute so the recovery would be 35%

Larger, industrial units operate at up to 80% recovery, emulating the 1:5 by recirculating part of the concentrate back to the inlet of the first membrane. This requires the incorporation of a pump, valves and flow meters in the circuit.

Feeding the RO softened water will allow the RO to be operated at less than 5:1, even as low as 3:1 depending on the feed water. The recovery can therefore be pushed.

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