Brief Introduction
ULP series of ultra-low pressure aromatic polyamide compound membrane element newly developed by
US. can work under ultra low pressure to reach as high permeate flow
and rejection same as regular low-pressure membrane element, and is applicable to desalination of surface
water and underground water.
It operates under approximately two thirds of the operating pressure of regular low-pressure composite
membranes, which can decrease the investment costs for such relevant facilities as pumps, pipelines, and containers,etc.and the operating cost for the RO system,thus increasing the economic efficiency.
Applicable to desalination treatment of those water sources with NaCl lower than 2000 ppm, such as surface
water, underground water, tap water and municipal water, ULP series membrane elements are mainly
applicable to such as pure water, boiler water replenishment, food stuff processing,and pharmaceutical
production.
Specifications and Major Properties
|
Model
|
Active Membrane Areaft2(m2)
|
Average Permeated Flow GPD (m3/d)
|
Stable Rejection Rate (%)
|
Minimum Rejection Rate (%)
|
|
ULP21-8040
|
365(33.9)
|
11000(41.6)
|
99.0
|
98.5
|
|
ULP12-8040
|
400(37.0)
|
13200(49.9)
|
98.0
|
97.5
|
|
ULP22-8040
|
400(37.0)
|
12100(45.7)
|
99.0
|
98.5
|
|
ULP32-8040
|
400(37.0)
|
10500(39.7)
|
99.5
|
99.0
|
|
ULP11-4040
|
90(8.4)
|
2700(10.2)
|
98.0
|
97.5
|
|
ULP21-4040
|
90(8.4)
|
2400(9.1)
|
99.0
|
98.5
|
|
ULP31-4040
|
90(8.4)
|
1900(7.2)
|
99.4
|
99.0
|
|
ULP11-4021
|
36(3.3)
|
1000(3.78)
|
98.0
|
97.5
|
|
ULP21-4021
|
36(3.3)
|
950(3.6)
|
99.0
|
98.5
|
|
ULP31-4021
|
36(3.3)
|
850(3.2)
|
99.4
|
99.0
|
|
ULP21-2540
|
30(2.8)
|
750(2.84)
|
99.0
|
98.5
|
|
ULP21-2521
|
14(1.3)
|
300(1.13)
|
99.0
|
98.5
|
Testing Conditions
Testing Pressure…………………………………150 psi (1.03Mpa)
Temperature of Testing Solution ………………25 °C
Concentration of Testing Solution (NaCl)…… 1500ppm
PH Value of Testing Solution …………………7.5
Recovery Rate of Single Membrane Element…15% (8040-size, 4040-size and 2540-size)
8% (4021-size and 2521-size)
Operation limits and Conditions
Max. Working Pressure…………………………………………………… 600psi(4.14Mpa)
Max. Feedwater Flow…………………………………………………………75gpm (17 m3/h) (8040)
16gpm (3.6 m3/h) (4040)
Max. Feedwater Temperature…………………………………………… 45°C
Max. Feedwater SDI………………………………………………………… 5
Residual chlorine Concentration of Feedwater……………… <0.1ppm
pH Range of Feedwater during Continuous Operation… 3~10
pH Range of Feedwater during Chemical Cleaning……… 2~12
Max. Pressure Drop of Single Membrane Element………… 15psi(0.1Mpa)
