Core Structure & Filtration PrincipleThe cartridge adopts a gradient winding structure design of "outer loose and inner dense". By precisely controlling the yarn thickness and winding density, it forms a step-by-step filtration channel from large outer pores to small inner pores, where......
Core Structure & Filtration Principle
The cartridge adopts a gradient winding structure design of "outer loose and inner dense". By precisely controlling the yarn thickness and winding density, it forms a step-by-step filtration channel from large outer pores to small inner pores, where the size of inner diamond pores directly determines the filtration accuracy grade. When seawater is pressed in from the filter inlet and flows through the cartridge, the outer loose filter layer first achieves preliminary interception of large-particle impurities (such as sediment and shell fragments). Then the water flows inward to intercept medium-sized suspended solids and tiny colloidal particles in sequence. Finally, the clean water flows through the porous skeleton, converges and discharges from the outlet. Meanwhile, this structure can promote demulsification and separation of emulsions in seawater; tiny water droplets coalesce and settle, then discharge through the blowdown valve to further improve the purity of filtered water. The double O-ring sealing system ensures perfect fit between the cartridge and filter, almost eliminating bypass leakage risk and guaranteeing stable filtration effect.
Key Performance Advantages
High-efficiency Impurity Interception: Filtration accuracy covers multiple grades from 1μm to 100μm optional. The removal rate of suspended solids, particles, rust and other impurities in seawater reaches over 95%, which can control the effluent turbidity ≤1NTU, meeting the strict requirement of SDI ≤5 for inlet water of subsequent reverse osmosis membranes, and effectively reducing membrane fouling rate by more than 60%.
Strong Corrosion Resistance & Stability: The main body is made of fully polypropylene, glass fiber and other chemically inert materials, with excellent corrosion resistance to seawater. It is compatible with salts in seawater and common pretreatment chemicals, free of binders and surfactants, with extremely low eluate, avoiding secondary pollution to seawater. It maintains structural stability without deformation under the inlet-outlet pressure difference of 0.4MPa, withstands seawater temperature fluctuation of 5-40℃, and adapts to water temperature changes in different sea areas and seasons.
High Dirt Holding Capacity & Long Service Life: The gradient filtration structure greatly improves the dirt holding capacity of the filter layer, realizes selective interception of pollutants, reduces the probability of filter layer blockage, and extends the service life by more than 30% compared with ordinary cartridges,effectively reducing cartridge replacement frequency and operation and maintenance costs. It also has the characteristics of low pressure difference and high flow rate, with pressure loss ≤0.03MPa and single cartridge flow rate up to 10-15m³/h, ensuring high-efficiency operation of seawater treatment systems.
Excellent Adaptability & Safety: Universal external dimensions, covering standard lengths of 10", 20", 30", 40" and outer diameter specifications of 50-115mm, which can directly adapt to various standard filter housings. Customized production is also supported according to the flow demand and installation space of seawater treatment systems. The food-grade polypropylene raw material meets FDA standards with high cleanliness, suitable for scenarios directly related to drinking water safety such as island domestic water production and marine water supply.
Typical Application Scenarios
Widely used in the pretreatment link of various seawater treatment scenarios, including but not limited to: seawater desalination projects in islands and coastal areas, marine ballast water filtration systems, pretreatment of domestic drinking water for ocean-going ships, seawater purification of offshore oil platforms, pretreatment of mariculture water, seawater circulation treatment systems in tropical and temperate sea areas, etc. Especially in marine and island scenarios with limited space, it realizes high-flow treatment in limited space with compact structure design; the floor area of filter housing is reduced by 40% compared with traditional cartridges, with convenient installation and maintenance.
Core Technical Parameters (Standard Model)
Filtration Accuracy: 1μm, 5μm, 10μm, 20μm, 50μm, 100μmFilter Material: Polypropylene (PP), Glass Fiber, Absorbent CottonSkeleton Material: Polypropylene, Stainless SteelOperating Temperature: 5-40℃Maximum Working Pressure Difference: 0.4MPaStandard Dimensions: Length: 10"-40" (Customizable); Outer Diameter: 50-115mm (Customizable)Single Cartridge Flow Rate: 10-15m³/h (Slightly different according to accuracy and working conditions)
This product has passed rigorous seawater working condition simulation tests, and can stably exert filtration performance in complex marine environments. It not only significantly reduces the operating cost of subsequent treatment systems, but also effectively protects core components such as reverse osmosis membranes and extends the service life of the whole system, providing a reliable filtration solution for the efficient utilization of seawater resources.
