Description
Domestic reverse osmosis membrane.
RO Reverse osmosis is a process in which the flow rate is decreased by means of a semi-permeable membrane and a pushing force greater than the osmotic pressure is applied in the opposite direction to the osmosis process. In this way the substances in the water are divided on one side of the membrane (concentrate) and on the other side a dilute solution low in dissolved rigids is received.
KeenSen 50 GPD (gallons per day) reverse osmosis membrane is widely applicable to domestic water purification, direct consumption in buildings or offices and other small water purification equipment, etc.
Specifications.
Model |
Active membrane area ft2 (m2) |
Permeation flow GPD(m3/d) |
Stable rejection rate of test method A (%) |
Stable rejection rate of test method B (%) |
RO-1812-50 |
4.2(0.39) |
50 (0.19) |
96.00 |
98.50 |
Standard reverse osmosis membrane test condition.
Test method |
Solution concentration |
Temperature (℃) |
pH value |
Operational pressure psi (MPa) |
Recovery rate (%) |
A |
500mg/L (NaHCO3、CaCl2、NaCl) |
25 |
7.5 – 8 |
60 (0.41) |
50 |
B |
250mg/L NaCl |
25 |
7.5 – 8 |
60 (0.41) |
20 – 30 |
Notes: The permeate flux of a single membrane element may vary by ± 15%.
Limits and operating conditions of the membrane element:
Max. Working pressure |
300 psi (2.07MPa) |
Max. Feed water temperature |
45 ℃ |
Max. Feedwater SDI15 |
5.0 |
Free chlorine concentration in feedwater |
0.1 mg/L |
pH range of feed water during continuous operation |
3 – 10 |
pH range of feed water during chemical cleaning |
2 – 12 |
Max. Pressure drop of a single diaphragm element |
10 psi (0.07Mpa) |
Related articles: What is reverse osmosis?
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