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Brief Introduction
Desalination membranes are widely used in seawater desalination and high concentration brackish water desalination systems to produce various industrial and domestic water uses such as boiler make-up water for power plants. Desalination membranes are suitable for the feed of seawater and highly concentrated brackish water, especially for seawater and highly concentrated brackish water desalination systems with strict pre-treatment such as UF/MF.
Specifications and Major Properties
Model | Average Permeated Flow GPD (m3/d) | Stable Rejection Rate (%) | Minimum Rejection Rate (%) |
IWL 21-8040 | 10000(37.8) | 99.5 | 99.2 |
IML 22-8040 | 1 1000(41.5) | 99.5 | 99.2 |
IWL 21-4040 | 2500(9.4) | 99.5 | 99.2 |
Testing Conditions:
Testing Pressure: 225 psi (1.55Mpa)
Temperature of Testing Solution: 25°C
Concentration of Testing Solution (NaCl): 2000ppm
pH Value of Testing Solution: 7.5
Recovery Rate of Single Membrane Element: 15%
Extreme Operation Conditions
Max. Working Pressure: 600psi(4. 14Mpa)
Max. Feedwater Flow: 75gpm(17 m3/h) (8040)
16gpm (3.6 m3/h) (4040)
Max. Feedwater T emperature: 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)
Dimensions of Membrane Element
All dimensions are shown in: millimeter (inch)
Key points of reverse osmosis membrane installation
1. Before installing the membrane element, ensure that the system has been cleaned.
2. When installing the membrane element into the system, properly lubricate the O-ring and concentrated water seal, either with a silicone-based adhesive or a 50% aqueous solution of glycerin, prohibiting the use of oil, grease, petroleum jelly or petroleum-based compounds.
3. When installing the Dow reverse osmosis membrane into the pressure vessel one by one, eliminate the gap at the end plate of the pressure vessel by adding a gasket to prevent the membrane element from leaping in the pressure vessel when the system starts and stops, and to reduce the possibility of leakage at the outer connection of the membrane element.
Brief Introduction
Desalination membranes are widely used in seawater desalination and high concentration brackish water desalination systems to produce various industrial and domestic water uses such as boiler make-up water for power plants. Desalination membranes are suitable for the feed of seawater and highly concentrated brackish water, especially for seawater and highly concentrated brackish water desalination systems with strict pre-treatment such as UF/MF.
Specifications and Major Properties
Model | Average Permeated Flow GPD (m3/d) | Stable Rejection Rate (%) | Minimum Rejection Rate (%) |
IWL 21-8040 | 10000(37.8) | 99.5 | 99.2 |
IML 22-8040 | 1 1000(41.5) | 99.5 | 99.2 |
IWL 21-4040 | 2500(9.4) | 99.5 | 99.2 |
Testing Conditions:
Testing Pressure: 225 psi (1.55Mpa)
Temperature of Testing Solution: 25°C
Concentration of Testing Solution (NaCl): 2000ppm
pH Value of Testing Solution: 7.5
Recovery Rate of Single Membrane Element: 15%
Extreme Operation Conditions
Max. Working Pressure: 600psi(4. 14Mpa)
Max. Feedwater Flow: 75gpm(17 m3/h) (8040)
16gpm (3.6 m3/h) (4040)
Max. Feedwater T emperature: 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)
Dimensions of Membrane Element
All dimensions are shown in: millimeter (inch)
Key points of reverse osmosis membrane installation
1. Before installing the membrane element, ensure that the system has been cleaned.
2. When installing the membrane element into the system, properly lubricate the O-ring and concentrated water seal, either with a silicone-based adhesive or a 50% aqueous solution of glycerin, prohibiting the use of oil, grease, petroleum jelly or petroleum-based compounds.
3. When installing the Dow reverse osmosis membrane into the pressure vessel one by one, eliminate the gap at the end plate of the pressure vessel by adding a gasket to prevent the membrane element from leaping in the pressure vessel when the system starts and stops, and to reduce the possibility of leakage at the outer connection of the membrane element.
First of all, you should have a water pressure meter, you test the pressure of the waste water, if the pressure value is above 6KG, it means that the RO membrane may be blocked. Or you have a TDS or conductivity meter, you test the water quality if the TDS value of the water is very high, then the d
China Commodities Expo Nigeria was held as scheduled from November 8, 2022 - November 11, 2020.During the exhibition, our team members answered questions from a professional perspective for many customers and provided diverse solutions for the industry.Exhibition Overview The show was packed with ex
Time: 8 Nov.-11 Nov.2022Exhibition Address: Landmark Centre, Lagos, NigeriaBooth : A27-A28 We will be in Nigeria from November 6th to December 10th to prepare for the Exhibition. Looking forward to our meeting! WeChat/WhatsApp: +86-13393211007 à Email: sales@cnumek.com