1. Brief introduction of Vontron LP21-4040 RO membrane
Vontron LP21-4040 RO membrane
Leading Vontron Reverse Osmosis Membrane
LP21-4040 VontronRO 4inch RO membrane
LP21-4040 filtration for high conductivity water.
2. Operating limits of Vontron LP21-4040 RO membrane
Max. Working Pressure……… 600psi(4.14Mpa)
Max. Feedwater Flow………… 16gpm (3.6 m3/h) (4040)
Max. Feedwater Temperature 45°C
Max. Feedwater SDI…………… 5
Residual chlorine Concentration …<0.1ppm
pH Range of Feedwater … 2~11
pH Range of Feedwater during Chemical Cleaning……… 1~13
Max. Pressure Drop of Single Membrane Element………… 15psi(0.1Mpa)
*The limitations shown here are for general use.
For specific projects, operating at more
conservative valuesmay ensure the best
performance and longest life of the membrane. See Hydranautics Technical Bulletins formore
detail on operation limits, cleaning pH, and
cleaning temperatures.
3. Specification of Vontron LP21-4040 RO membrane:
| Model | Effective Membrane Area | Water Flow | Salt Rejection, % | |
| ft²/m² | GPD/m³/d | Stable | Minimum | |
| LP21-4040 | 90/8.4 | 2400/9.1 | 99.5 | 99.3 |
4.Test condition:
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% (8040-size, 4040-size and 2540-size)
8% (4021-size and 2521-size)
5. Features of Vontron LP21-4040 RO membrane
· 99% nominal rejection
· High TOC, silica and hardness rejection
· Desalting of well waters-municipal drinking water
· Reducing TDS prior to ion exchange
· Boiler make-up water
· Ultrapure water for semi-conductor manufacture