SW Series – Seawater Desalination RO Membranes
HR – High Rejection SWRO Membranes
SW-HR series are membrane elements with high rejection rate developed for seawater desalination, which can ensure long-term stable high rejection rate while reaching the standard flux.
- High boron removal rate and high rejection rate
- Increased sheet thickness and cross-linking degree to ensure the service life and chemical resistance of membranes
- Adopt the short membrane sheet length design to increase the utilization rate of effective area and reduce the fouling rate of membranes
Product Dimensions
Model
A inch (mm)
B inch (mm)
C inch (mm)
D inch (mm)
SW-8040-400HR
40(1,016)
/
1.125(29)
7.9(201)
SW-4040-82HR
37.9(963)
1.05 (26.7)
0.75(19)
3.9(99)
Product Specifications
Model
Effective Membrane ft² (㎡)
Stabilized Rejection Rate(%)
Minimum Rejection Rate(%)
Stabilized Boron Rate(%)
Flux, gpd (m³/d)
SW-8040-400HR
400(37.2)
99.80
99.65
92.0
6500(24.5)
SW-4040-82HR
82(7.6)
99.75
99.60
/
1320(5)
Operating and Cleaning Limits
- Maximum Operating Pressure 83 bar (1200 psi)
- Maximum Operating Temperature 45°C (113°F )
- Maximum Element Pressure Drop 1.0 bar (15psi)
- pH Range Continuous Operation 2-11
- pH Range Short-Term Cleaning 1-13
- Maximum Feed SDI(SDI ) 5.0
- Free Chlorine Tolerance < 0.1 ppm
Notes
- Permeate flow for individual elements may vary ±15 percent from the value specified.
- Active membrane area guaranteed ±4%.
- Stabilized salt rejection is generally achieved within 24-48 hours of continuous use; depending upon feedwater characteristics and operating conditions.