Product Overview
Power‑plant boiler feed‑water and new‑energy battery‑manufacturing production‑line require strict ultrapure‑water index, two‑stage RO + EDI process is widely‑adopted solution. reverse osmosis membrane element LF‑BW‑8040‑440PRO belongs to Water Filter Element product‑line. It is high‑performance brackish‑water RO membrane with enlarged 440 sq.ft effective membrane‑area, stable 99.6% salt‑rejection rate, excellent SiO₂ removal‑capacity. It serves for two‑stage RO system, cooperate with EDI module to produce high‑quality ultrapure‑water satisfying power‑industry boiler‑make‑up‑water requirements.
Basic Technical Parameters
| Model | LF‑BW‑8040‑440PRO |
| Effective membrane area | 440 ft² (40.9 ㎡) |
| Average water‑production | 12500 GPD (47.3 m³/d) |
| Stable salt‑rejection rate | 99.6% |
| Test‑condition | 225 psi, 2000ppm NaCl, 25℃, pH7.5‑8.0, recovery‑rate15% |
| Max operating pressure | 600 psi (4.14MPa) |
| Operating‑temperature | 0‑45℃ |
| Max feed‑water SDI15 | 5.0 |
Project‑Oriented Application Working‑Condition
LF‑BW‑8040‑440PRO is core membrane for power‑plant boiler feed‑water preparation and lithium‑battery new‑energy factory ultrapure‑water system. In two‑stage RO+EDI flow‑chart: first‑stage RO removes most salt‑ion; second‑stage adopts LF‑BW‑8040‑440PRO for further desalination, then enter EDI equipment, final‑product‑water resistivity meets boiler‑make‑up‑water requirement. Large membrane‑area reduces quantity of membrane‑elements under same system water‑yield, saving pressure‑vessel and frame investment. Must be equipped with complete pre‑treatment including multimedia filter, activated‑carbon and security‑filter. Matching pre‑filtration consumable can select High Flow Filter Cartridge. This model targets conventional medium‑TDS brackish‑water source; for high‑pollution raw‑water please select BW‑FR anti‑pollution‑series RO‑membrane. For reference of whole‑set fluid‑filtration‑equipment QC‑standard, please refer to Industrial Oil Purification Equipment quality‑control‑system.
Core Product Advantages
440 sq.ft enlarged membrane‑area, higher single‑element water‑output, decreasing total membrane‑quantity for large‑tonnage ultrapure‑water‑project. Excellent silicate removal‑performance, avoid silicon‑scale precipitation harming boiler‑system. High‑density polyamide composite‑layer keeps stable salt‑rejection in long‑time continuous‑operation. Standard 8040 dimension fits universal 8‑inch RO pressure‑vessel housing. Every membrane‑element passes flux, salt‑rejection and integrity‑test before shipment. Suitable for large‑scale EPC water‑treatment‑project bulk‑supply.
Manufacturer & Factory Strength
Xinxiang Lifeierte Filter Corp.,Ltd (Stock Code:837936) has independent membrane‑element‑testing‑workshop. We provide full BW‑series product‑matrix: BW‑4021 / BW‑4040 / BW‑8040 / BW‑8040‑440 / BW‑8040‑440PRO. We can cooperate with EPC‑contractor for power‑industry and new‑energy‑industry water‑treatment‑project, supply membrane‑element plus supporting filter‑cartridge one‑stop‑supply. For technical‑consulting please contact our engineering team.
FAQ
Q1：What main‑project does LF‑BW‑8040‑440PRO apply to?
A1：Mainly for power‑plant boiler feed‑water, lithium‑battery new‑energy factory ultrapure‑water production, used for second‑stage membrane‑element of two‑stage RO+EDI system.
Q2：Can LF‑BW‑8040‑440PRO be used for seawater‑desalination?
A2：Not suggested, seawater‑high‑salinity‑scenario should select SW‑series special seawater‑desalination RO‑membrane‑element.
Q3：What pre‑treatment index requirement for feed‑water?
A3：Feed‑water SDI15 ≤5.0, free‑chlorine＜0.1mg/L, temperature 0‑45℃.
Q4：What is the difference between BW‑8040‑440 and BW‑8040‑440PRO?
A4：PRO‑version optimizes composite‑separation‑layer formula, improves stability under long‑term continuous‑running for industrial‑large‑flow‑system.
Q5：Can you provide complete‑set two‑stage RO+EDI membrane‑selection‑calculation‑sheet?
A5：Yes, provide raw‑water‑quality‑report, system design‑water‑yield for us to finish matching‑calculation and proposal.
Reference standard: ASTM D4516 Reverse‑osmosis membrane‑element performance‑test specification
contact our engineering team
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