MEMBRANE TECHNOLOGY

HOW THE MEMBRANE SYTEM WORKS

The spiral membrane is constructed of one or more membrane envelopes wound around a perforated central tube. The permeate passes through the membrane into the envelope and spirals inward to the central tube for collection

MEMBRANE ADVANTAGE

Developed for fluid treatment in residential, commercial and industrial applications, the use of membranes to selectively remove or separate extremely small substances from water and process streams has become a technological success story. There are four types of membrane filtration and separation technologies in commercial use today, effectively removing substances ranging in size from suspended solids to ionic species.

LG CHEM NANO H20 RO MEMBRANE ELEMENTS

LG Water Solutions, part of LG Chem, Ltd., manufactures the full line of NanoH20 membranes based on innovative Thin Film Nanocomposite (TFN) technology which improves membrane performance by embedding benign nanomaterial in the surface of the membrane. Armoured with this patented nanotechnology, NanoH20 RO membranes deliver best in the class flux and salt rejection. The membranes are provided in various spiral wound configurations that fit easily into new or existing RO systems. 

Element Specifications

 

4" SPIRAL WOUND MEMBRANE

Model Permeate Flow RateGPD (m3/d)

   NaCl Rejection Stabilized/Minimum   

 Active Area ft2 (m2)
LG BW 4040 R               2,500 (9.5)            99.6% / 99.3%       85(7.9)
LG BW 4040 ES               2,500 (9.5)           99.5% / 99.2%       85 (7.9)
LG BW 4040 AFR               2,300 (8.7)            99.6% / 99.3%      80 (7.4)

Specifications are based on a 2,000 mg/L NaCl solution at 225 psig operating pressure (1,551 kPa), 77°F (25°C), pH 8, recovery 15%, after 24 hours. Individual element flux may vary ± 15%.

8" SPIRAL WOUND MEMBRANE

Element Specifications

Model Permeate Flow RateGPD (m3/d)             NaCl Rejection Stabilized/Minimum               Active Area ft2 (m2)
LG BW 400 R                      10,500 (39.7)                             99.6% / 99.5%                        400 (37)
LG BW 440 R                 11,550 (43.7)                             99.6% / 99.5%                        440 (41)
LG BW 400 ES                 10500  (39.7)                             99.6% / 99.5%                        400(37)
       

Specifications are based on a 2000 mg/L NaCl solution at 225 psig operating pressure (1,551 kPa), 77°F (25°C), pH 8, recovery 15%, after 24 hours. Individual element flux may vary ± 15%. *Element includes external permeate tube.

OPERATING & DESIGN PARAMETERS THIN-FILM NANO COMPOSITE MEMBRANE (TFN)™

  Maximum Feed Fow Rate (M3/Hr) Typical operating process flux Maximum Applied Pressure Maximum Temprature   Recommended pH Max. Chlorine Concentration
   8" = 17 / 4" = 3.6 10-20 GFD (15-35 LMH)  600 psig (4,137 kPa)  122* F 50* C Optimum Rejection pH:7.0-7.5 Operating pH range 4.0-11.0 clearing pH 2.0-11.5              < 0.1 ppm