DOW Filmtec BW30HR-440i RO Membrane

The DOW FILMTEC™ BW30HR-440i element is a high-performing and productivity element combining the highest active membrane area available in the industry today with maximum rejection brackish water reverse osmosis (RO) membrane. It incorporates Dow’s innovative and proprietary BW30HR membrane sheet technology, designed to deliver the highest quality RO permeate. This is combined with the cleanability of a 28 mil feed spacer, to minimize capital expenses in high-purity industrial water applications, without increasing operating flux.

Advantage:

• Produces 20 percent more water compared to the BW30-400 element, and 10 percent more water compared to the BW30-440i element, at the same operating pressure and with higher rejection, enabling lower capital expense for new systems, or increased water production in an existing system.
• The BW30HR membrane sheet sustains maximum rejection over the useful life of the RO element of critical solutes, including silica, boron, ammoniumand nitrate.
• Includes iLEC™ (interlocking endcaps) technology, which reduce system operating
  costs and the risk of o-ring leaks that can cause decreased permeate water quality.
• Designed using an industry standard 1.125 inch ID permeate tube for interchangeability with other brackish water elements.

Model	Size (Diameter)		Active area		Permeate flow rate		Stabilized salt rejection	Data sheets
	mm	inch	ft²	m²	gpd	m³/d	%
BW30 PRO-4040	100	4	78	7.2	2600	9.8	99.7
LCLE-4040	100	4	78	7.2	2500	9.5	99.2
LCHR-4040	100	4	78	7.2	2900	11	99.7
HSRO-4040-FF	100	4	90	8.4	1900	7.2	99.5
BW30 PRO-400	200	8	400	37	11000	42	99.6
BW30-400	200	8	400	37	10500	40	99.5
BW30-400IG	200	8	400	37	10500	40	99.5
BW30-365	200	8	365	34	9500	36	99.5
BW30HR-440i	200	8	440	41	13650	48	99.7
BW30FR-365	200	8	365	34	9500	36	99.5
BW30FR-400	200	8	400	37	10500	40	99.5
HSRO-390-FF	200	8	390	36	9000	34	99.5
SW30HR-380	200	8	380	35	6000	23	99.7

Permeate flow rate and salt rejection based on the following test conditions: 2000 ppm NaCl, 225 psig (15.5 bar), 77°F (25°C), and 15% recovery.  Permeate flow rates for individual elements may vary +/-20%. For the purpose of improvement, specifications may be updated periodically.