Lanxess Lewabrane

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Lanxess has developed a novel feed spacer based on an alternating thick-thin strand structure, designated ASD. This spacer has been designed to lower pressure drop, and reduce bio accumulation. This feed spacer has been incorporated into an FR (fouling resistant) membrane element, and an LE (low energy) membrane element. These innovative RO elements offer reduced operating costs, and longer membrane life.

Lower pressure drop results in lower power consumption
Reduced low flow areas results in less bioaccumulation
Lower fouling results in longer membrane life
Higher porosity means better cleanability
Smooth strands mean less biofouling, less damage during winding

Lewabrane – B400 Series Reverse Osmosis Elements

Model No.	Size (Dia.”× L”)	Permeate Flow		Salt Rejection (%)	Test Pressure (psi)	Membrane Area		Feed Spacer
Model No.	Size (Dia.”× L”)	gpd	m³/d	Salt Rejection (%)	Test Pressure (psi)	(ft²)	(m²)	mil	mm
B400 FR	8 × 40	10,500	39.9	99.5	225	400	37.2	34	0.86
B400 FR ASD	8 × 40	11,000	41.7	99.7	225	400	37.2	34 ASD	0.86 ASD

B400 LE	8 × 40	9,200	34.8	99.5	150	400	37.2	34	0.86
B400 LE ASD	8 × 40	9,600	36.2	99.5	150	400	37.2	34 ASD	0.86 ASD