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VONTRON VNF-8040HL.Water Treatment Nanofiltration Membrane Elements -VNF Series
Product Presentation:
The rejection rate for monovalent ions is relatively low , and the rejection rate for monovalent ions isrelatively high .
VNF series nanofiltration membrane element is used to remove organic substances , microorganisms ,viruses and most of the divalent and multivalent metal ions in water .
Application:
The production of drinking water , such as:municipal waterworks , rural area drinking waterprojects , etc .
Product Performance:
1、Operating pressure 70 psi (0 .48 MPa) 2000 mg/L MgSO4 solution Temperature at 25℃ pH 7.0 ± 0.5 Recovery rate at 15%.
2、Each membrane element may have ±20% variation of permeate flow .
Operating Conditions & Limits:
Maximum operating pressure psi(MPa) -------- 600(4 .14)
Maximum feedwater temperature ℃ --------- 45
Maximum inlet flow rate m3/h ---------- 17
Maximum concentration of free chlorine mg/L --------- 0.1
Maximum pressure drop per element psi(MPa) -------15(0 .1)
Allowed pH range for feedwater in operation ---------- 3-10
Allowed pH range for chemical cleaning ----------- 2-12
Maximum feedwater flow SDI15 ----------- 5
Important information:
Before the membrane element leaves the factory , The dry membrane element has nopreservation solution , The wet membrane element has 1.0% sodium bisulfite (in winter ,add 10% of propylene glycol antifreeze) as the preservation solution for storage treatmentand use vacuum packaging .
Dry membrane elements should always be maintained wet after Soaking; when wetmembrane elements are not used for a long time , preservation solution is needed to soakthe elements .
When the membrane element is used for the first time , it is recommended to flush it firstfor 15-25 minutes at low pressure (not suitable for soaking or soaking overnight), and thenflush it for 60-90 minutes at high pressure (the water flow should not be less than 50% ofthe system design water flow).
The permeate water and concentrated water within the first hour of the initial operationof the membrane element should all be discharged .
The operating limits and operational guidelines given in this technical information arepart of the limitations of the three-year warranty on the membrane element .
The addition of any chemicals that may affect the membrane element during storageand operation is prohibited , and Vontron Technology will not be liable for anyconsequences arising from the use of such chemicals .
Please refer to the Product Manual for details on installation , commissioning , storage ,and transportation of membrane elements .
Dimensions and Packaging:
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