Membrane elements ULP-4040 are intended for purification of brackish water in low pressure systems. Large active surface area together with high rejection rates allows to use these membranes in variable pressure and flow conditions without deterioration of permeate quality.
ULP-4040 membranes are spiral wound membrane elements for reverse osmosis systems.
High energy efficiency due to the low operating pressure
The high active surface area of the element allows for greater productivity
Before starting the reverse osmosis system the membrane must be pre-prepared, the elements loaded, the instruments calibrated and other system checks.
Avoid any spasmodic changes in pressure or flow within the roll elements during startup, shutdown, rinsing, etc. to avoid possible damage to the membrane. During startup, it is recommended to gradually transfer the system from standstill to operational state as follows:
The inlet water pressure should be raised gradually within 30-60 seconds.
The operating flow rate should be achieved gradually over a period of 15-20 seconds.
Permeate obtained during the first hour of operation is discarded.
After starting, wetting always keep the elements wet
To prevent biofouling during long breaks in work it is recommended to immerse the membrane elements in preservative solutions.
The maximum pressure drop is 2.1 bar.
Active area, m2
Operating pressure, bar
Flow rate, m3/day
Stabilized salt rejection, %
Permeate flow and salt (NaCl) rejection based on the following standard test conditions: 2.000 mg/L NaCl, 25 °C, 15% recovery.
Flow rates for individual elements may vary but will be no more than 15% below the value shown.