Introduciton
The use of reverse osmosis membranes in the water treatment industry is standardized practice, due to the requirement of filtration to take place in removing unwanted impurities from water. Membrane water treatment is done through the use of barriers that allow only specific substances to pass through the small pores of the membrane while not allowing other types of contaminants. There are a variety of membranes in use throughout the market which act as processes in treating groundwater, surface water, and wastewater to a level that is acceptable for industries and especially consumption. It is a rapidly growing industry, as a result of the need to combat low quality water sources such as rivers, lakes, wells, streams, and the ocean, in order to provide more alternative methods in supplying healthy, safe, steady, and accessible water to the masses. As per mentioned, there are different types of membranes which can be utilized for water treatment. The factors that necessitate which membrane would be more effective relies upon the types of contaminants existing in the water, and the desired water quality by the user.
Features
LEFILTER is a proud supplier of high quality membranes from top-rated reverse osmosis membrane manufacturing brands such as Dupont/Dow Filmtec, Hydranautics, Toray, CSM, GE, and VONTRON.These membranes come in sizes ranging from 2″, 4″, and 8″ for brackish water and seawater applications. They offer important features necessary for efficient performance, including low pressure and high rejection.
Technical data
Performance Parameters
Effective membrane area: 400ft² (37m²)
Water production capacity: 11,500GPD (43m³/d)
Stable salt rejection rate: 99.65%
Minimum salt rejection rate: 99.4%
Stable removal rate of solutes: NH₄⁺ is 98.8%, NO₃⁻ is 98.2%, SiO₂ is 99.8%, and boron is 80.0%
Operation Parameters
Maximum operating temperature: 113°F (45°C). When the pH > 10, the allowable continuous operating temperature is 95°F (35°C)
Maximum operating pressure: 600psi (41bar)
Maximum pressure difference: 15psi (1.0bar)
Continuous operating pH range: 2 – 11
Short-term cleaning pH range (30 minutes): 1 – 13
Maximum feed water flow rate: 85gpm (19m³/h)
Maximum feed water fouling index: SDI 5
Allowable free chlorine content: < 0.1ppm
Other Parameters
Product structure: Spiral wound membrane
Membrane material: Polyamide composite membrance
Feed water flow channel width: 34mil
Suggested operating conditions
TemperatureMax: 113°F (45°C); when pH > 10, continuous op: 95°F (35°C)
PressureMax op: 600psi (41bar); max ΔP: 15psi (1.0bar)
pH RangeContinuous: 2 – 11; short – term cleaning (30 min): 1 – 13
Flow RateMax feed water: 85gpm (19m³/h)
Fouling IndexMax SDI: 5
Chlorine Content Allowable free chlorine < 0.1ppm
Application
Other optional models
| Model | Flow Rate (m³/hr) | Raw Water Pump | Sand Filter Size (mm) | Carbon Filter Size (mm) | Anti-Scale Dosing System | Security Filter | High Pressure Pump | RO System |
|---|---|---|---|---|---|---|---|---|
| LFRO-0.5 | 0.5 | BW2-4 (0.55KW) | 250×1400 | 250×1400 | 40L | 3×20″ | BL2-11 (1.1KW) | 2×RO membrane 4040 |
| LFRO-1 | 1 | BJZ100 (0.75KW) | 300×1400 | 300×1400 | 40L | 5×20″ | BL2-13 (1.5KW) | 4×RO membrane 4040 |
| LFRO-2 | 2 | BJZ150 (1KW) | 400×1650 | 400×1650 | 40L | 5×20″ | BL4-12 (2.2KW) | 8×RO membrane 4040 |
| LFRO-3 | 3 | CMF4-60 (1.1KW) | 500×1750 | 500×1750 | 40L | 5×40″ | BL4-14 (3KW) | 12×RO membrane 4040 |
| LFRO-4 | 4 | CMF8-25 (1.5KW) | 600×1900 | 600×1900 | 40L | 5×40″ | CDL8-12 (4KW) | 4×RO membrane 8040 |
| LFRO-5 | 5 | CMF8-30 (1.85KW) | 750×1900 | 750×1900 | 60L | 7×40″ | CDL8-14 (5.5KW) | 5×RO membrane 8040 |
| LFRO-6 | 6 | CMF8-30 (1.85KW) | 900×1900 | 900×1900 | 60L | 7×40″ | CDL8-14 (5.5KW) | 6×RO membrane 8040 |
| LFRO-10 | 10 | CMF16-30 (2.2KW) | 1000×2200 | 1000×2200 | 60L | 10×40″ | CDL16-12 (11KW) | 10×RO membrane 8040 |
| LFRO-15 | 15 | CMF32-20 (4KW) | 1200×2300 | 1200×2300 | 100L | 15×40″ | CDL32-80 (15KW) | 15×RO membrane 8040 |
| LFRO-20 | 20 | CMF45-20 (7.5KW) | 1500×2400 | 1500×2400 | 100L | 20×40″ | CDL42-50 (18.5KW) | 20×RO membrane 8040 |
| LFRO-25 | 25 | CMF45-30 (11KW) | 1800×2600 | 1800×2600 | 150L | 25×40″ | CDL42-60 (22KW) | 25×RO membrane 8040 |
| LFRO-30 | 30 | CMF64-20 (11KW) | 2200×3400 | 2200×3400 | 200L | 42×40″ | CDL64-50 (30KW) | 30×RO membrane 8040 |
| LFRO-40 | 40 | CMF85-20 (15KW) | 2600×3450 | 2600×3450 | 500L | 52×40″ | CDM85-50 (37KW) | 40×RO membrane 8040 |
| LFRO-50 | 50 | CMF85-30 (18.5KW) | 3000×4500 | 3000×4500 | 500L | 65×40″ | CDM85-60 (45KW) | 50×RO membrane 804 |
