Reverse osmosis membranes Hydranautics 8040 ESPA2 MAX manufactured by Hydranautics a Nitto Group Company (USA), provide effective treatment of water from a wide range of dissolved substances of both organic and inorganic origin (up to 99, 8%). Hydranautics 8040 ESPA2 MAX membranes are designed for demineralization of water with salt content up to 2000 mg/l. Capacity – 45.4 m3/day. Working pressure – 10 bar. Selectivity – 99.5%. Active area – 40.8 m2.
Polyamide thin film composite membrane type.
– Maximum working temperature 113 F (45? C)
– Max working pressure 600psi (41 bar )
– Maximum differential pressure 15 psig (1.0 bar )
– pH range, continuous duty 2 ? 10
– pH range, short flushing (30 min ) 1 ? 12
– Maximal index SDI SDI 5
– Permissible free chlorine < 0,1 mg/l
For continuous operation at pH above 10 the maximum temperature is 95 F (35 ? C )
Under certain conditions, the presence of free chlorine and other oxidizing agents causes premature deterioration of the membrane.
Since damage due to oxidation is not covered by the warranty, the manufacturer recommends removing residual chlorine at the pretreatment stage, before it reaches the membranes
