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E: sales1@melko2015.com
E: sales1@melko2015.com
No.222 Xiangche Rd. Chedun Town Songjiang Dist. Shanghai China 201611
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Our 50-inch PP Wound Filter is engineered as the first line of defense for seawater desalination systems. Constructed entirely from 100% polypropylene, it offers exceptional resistance to saltwater corrosion. Its extended length and deep-bed design provide massive dirt-holding capacity, efficiently removing sand, silt, algae, and other suspended solids from seawater intake. This critical pre-filtration step is essential for protecting expensive downstream ultrafiltration (UF) membranes and reverse osmosis (RO) elements from fouling and abrasion, ensuring stable system pressure and reducing operational costs.
Critical RO Membrane Protection: Acts as a robust barrier, removing the majority of particulate matter to significantly reduce the fouling rate of delicate and costly RO membranes, extending their cleaning intervals and service life.
Superior Corrosion Resistance: Made from inert, 100% polypropylene, it withstands continuous exposure to seawater without degradation, rust, or leaching, ensuring consistent water quality and material safety.
High Capacity for Challenging Water: The 50-inch length and graded density winding are specifically designed to handle the high and variable sediment loads typical of seawater sources, offering longer service cycles than standard cartridges.
Optimized for Large-Scale Systems: A single 50-inch cartridge provides high flow rates with a low pressure drop, simplifying plumbing and reducing the number of housing vessels needed in large-capacity desalination plants.
| Material | 100% Polypropylene |
| Micron Rating | 1–50μm |
| Length | 50″ (1270 mm) |
| Diameter | 2.5″ (63mm) |
| Max. Operating Temperature | ≤ 60°C |
| Max. Differential Pressure | 0.3 MPa |
| End Cap Options | PP Plain, PP Threaded |
| Compatibility | Resistant to seawater, most acids and alkalis |
Primary Pre-filtration for seawater reverse osmosis (SWRO) desalination plants.
Intake Water Filtration for offshore platforms, ships, and coastal industrial facilities.
Pretreatment for ultrafiltration (UF) systems in desalination processes.
Protection of high-pressure pumps and energy recovery devices from particulate abrasion.
System Design: Install in multi-cartridge housings after coarse screening and before finer cartridge filters or UF systems.
Selection: For seawater, a 20μm or 50μm rating is commonly recommended as the primary pre-filter.
Monitoring: Replace the cartridge when the inlet-outlet pressure differential increases by 0.15-0.2 MPa to avoid compaction of captured contaminants and excessive loading on pumps.
Safety: Always depressurize the filter housing before opening for cartridge change-out.
Q: Why is a 50-inch PP filter recommended for seawater desalination instead of shorter ones?
A: The 50-inch length offers larger filtration area and higher dirt-holding capacity, which is crucial for handling the high and unpredictable sediment load in seawater. This translates to longer run times, fewer change-outs, and lower long-term maintenance costs for large-scale plants.
Q: Is the material suitable for continuous seawater use?
A: Yes. 100% polypropylene is highly chemically inert and is the industry-standard material for seawater pre-filtration cartridges due to its excellent resistance to saltwater corrosion and biological growth.
