RCP900-20EPP Water Treatment Filter Product Specification

Product Introduction

The RCP900-20EPP is a high-flow enhanced polypropylene (EPP) water filter cartridge, exclusively engineered for high-throughput industrial and commercial water treatment pre-filtration and fine filtration applications. Adopting advanced modified enhanced polypropylene raw materials and three-dimensional gradient melt-blown technology, this filter element optimizes the pore structure and material density on the basis of the classic PP filter, with a customized RCP900 series structural design and 20EPP enhanced core configuration. It features super high dirt-holding capacity, excellent mechanical strength and stable filtration performance, free of adhesives, heavy metals and organic leachables, complying with international water treatment material safety standards such as FDA and NSF. The product is specially designed for large-flow water treatment systems, effectively intercepting suspended solids, fine particulates, colloids and macromolecular impurities in water, and providing reliable front-end protection for subsequent precision filtration equipment such as RO membranes and nanofiltration membranes without causing secondary pollution to the water body.

Filtration Precision

The RCP900-20EPP is designed with a high-precision graded filtration structure, with a nominal filtration precision of 2 microns and an absolute filtration precision of 5 microns. Its three-dimensional gradient pore structure is composed of a dense surface filtration layer, a transition interception layer and a porous support layer, which can realize step-by-step capture of impurities with different particle sizes from 2 microns to tens of microns. The dense surface layer can effectively intercept fine particulates that are easy to cause fouling of precision membranes, while the inner gradient layer can store a large amount of intercepted impurities, avoiding rapid blockage of the filter element and ensuring that the filtration precision remains stable and unattenuated throughout the entire service cycle under high-flow working conditions.

Flux

Under the standard operating conditions of 25℃ ambient temperature, 0.25MPa inlet pressure and clean water medium, the pure water flux of the RCP900-20EPP reaches 900 L/h (liters per hour), which is the core high-flow advantage of this product. Within the recommended operating pressure range of 0.15-0.35MPa, the flux maintains a high and stable state with a variation rate of less than 10%; when the water temperature is in the range of 10-40℃, the flux changes linearly with the temperature rise and fall, and the flux recovery rate is 100% after the temperature returns to the standard value. For actual raw water with turbidity ≤8 NTU, the actual working flux can still maintain more than 800 L/h, fully meeting the large-flow water supply requirements of industrial and commercial water treatment systems.

Salt Rejection Rate

As a high-precision enhanced PP particulate filtration filter element, the RCP900-20EPP is optimized for the physical interception of non-ionic salt contaminants and colloidal salt particles, with a salt rejection rate of ≥99% for insoluble salt particulates and colloidal salt with particle size above 2 microns. For soluble inorganic salts, the product is positioned as a professional pre-filtration component of desalination systems such as RO and NF, which can effectively reduce the particulate salt load in the feed water of subsequent desalination membrane elements, avoid salt scaling and particulate fouling on the membrane surface, and thus improve the overall salt rejection efficiency and service life of the entire desalination system. In addition, the filter element can intercept more than 98% of organic salt macromolecules in water, further optimizing the water quality of the feed water for the subsequent system.

Pressure Drop

Under the rated flux (900 L/h) and standard operating conditions, the initial pressure drop of the RCP900-20EPP is ≤0.015MPa, which is lower than that of conventional PP filter elements of the same precision, realizing low energy consumption operation of the high-flow system. With the progress of filtration work and the gradual accumulation of intercepted impurities, the pressure drop of the filter element rises slowly and stably; the recommended maximum allowable operating pressure drop is 0.1MPa. When the pressure drop reaches this value, the filter element needs to be cleaned or replaced in time to avoid excessive pressure loss leading to the reduction of system water supply flow, the increase of energy consumption of the water pump and the structural damage of the filter element caused by excessive pressure.

Molecular Weight Cutoff (MWCO)

The molecular weight cutoff of the RCP900-20EPP is precisely calibrated to 80,000 Daltons (Da), which is matched with its 2-micron high filtration precision and enhanced EPP material structure. This MWCO rating can effectively retain macromolecular organic matter, colloidal particles, macromolecular impurities and organic polymers with molecular weight higher than 80,000 Da in water, while ensuring the unimpeded passage of water molecules, small molecular inorganic substances and trace beneficial ions. It is specially designed for the pre-filtration requirements of high-precision large-flow water treatment systems, and can effectively reduce the macromolecular contaminant load of subsequent precision membrane elements.

Membrane Thickness

The RCP900-20EPP adopts a three-layer composite enhanced polypropylene membrane structure, with a total effective membrane thickness of 30mm, which is thicker than conventional PP filter elements, further improving the dirt-holding capacity and mechanical strength. The surface filtration layer is a 6mm dense enhanced EPP membrane, which is responsible for high-precision interception of 2-5 micron fine particulates and has excellent wear resistance and anti-blocking performance; the middle transition support layer is an 18mm three-dimensional gradient pore EPP membrane, which undertakes secondary interception of impurities and provides strong structural support for the surface layer, and is the main dirt-holding area of the filter element; the bottom base layer is a 6mm thick high-density EPP membrane, which enhances the pressure resistance and extrusion resistance of the entire filter element. The three-layer thickness distribution balances high filtration precision, super dirt-holding capacity and high mechanical strength, making the filter element resistant to deformation and rupture under high pressure and high flow working conditions.

Replacement Cycle

The recommended standard replacement cycle of the RCP900-20EPP is 4-6 months, which is formulated based on the standard working conditions: raw water turbidity ≤8 NTU, suspended solids content ≤15 mg/L, and 24-hour continuous operation of the system. For water treatment systems with harsh water quality conditions (turbidity >8 NTU, suspended solids content >15 mg/L) such as industrial raw water and municipal sewage reclaimed water, the replacement cycle is shortened to 2-4 months according to the actual system pressure drop and water quality test results; for low-turbidity high-quality raw water pre-filtration scenarios (turbidity ≤2 NTU) such as pure water and mineral water production, with regular gas-water backwashing and online maintenance, the replacement cycle can be appropriately extended to 6-9 months, effectively reducing the use and maintenance cost of the system.

Features

Enhanced EPP raw material: Adopts food-grade modified enhanced polypropylene, with higher density, better mechanical strength and corrosion resistance than conventional PP materials, acid and alkali resistant (pH 1-13), and can adapt to complex industrial water quality conditions.
3D gradient melt-blown structure: Three-dimensional gradient pore design realizes step-by-step interception of impurities, super high dirt-holding capacity, slow pressure drop rise, and stable filtration performance under high-flow conditions.
Ultra-low initial pressure drop: The optimized pore structure and membrane thickness design make the initial pressure drop as low as ≤0.015MPa, reducing the energy consumption of the water pump and realizing energy-saving operation of the large-flow system.
Adhesive-free integrated forming: Adopts advanced hot-melt welding technology for one-piece forming, no seams, no filter bypass, avoiding unfiltered water leakage and ensuring the purity of filtered water.
High pressure resistance and anti-deformation: 30mm thick composite EPP membrane structure, can withstand the maximum operating pressure of 0.6MPa, no deformation, no rupture under high pressure and high flow impact, with long service life.
Backwash recoverable performance: For slight blockage, the filtration performance can be recovered by gas-water backwashing, which can be reused for many times and reduce the replacement frequency and use cost.
Standard universal interface: RCP900 series standard structural design, matching the universal large-flow industrial filter housing, no need for special installation tools, quick disassembly and assembly, and convenient maintenance.

Application Fields

Large-flow industrial process water pre-filtration: Chemical, petrochemical, electronics, metallurgy, papermaking and other industries’ process water, cooling water and circulating water pre-filtration, remove fine particulates and colloids to protect subsequent precision heat exchangers, RO membranes and other equipment.
Commercial central water supply system: Large shopping malls, high-end hotels, office buildings, hospitals, schools and other large commercial premises central water supply fine filtration, improve the quality of domestic and service water, meet the large-flow water supply demand.
Industrial RO/NF desalination system pre-filtration: Special pre-filtration for large-flow industrial reverse osmosis and nanofiltration desalination systems, reduce the particulate and macromolecular contaminant load of membrane elements, and extend the service life of RO/NF membranes.
Food and beverage industry water treatment: Large-scale beverage, dairy, beer, food processing and other industries’ production water, pure water and mineral water pre-filtration and fine filtration, meeting the food-grade water quality requirements of FDA and NSF.
Municipal sewage advanced treatment and reclaimed water reuse: Municipal sewage secondary treatment effluent advanced filtration, reclaimed water reuse for industrial cooling, urban greening, road cleaning and other scenarios, remove suspended solids and colloids to improve the quality of reclaimed water.
Water plant and water supply company large-flow filtration: Urban water plant, rural centralized water supply system and water supply company’s raw water pre-filtration and fine filtration, reduce the turbidity of tap water and improve the drinking water quality.
Aquaculture and aquatic product processing water purification: Large-scale marine and freshwater aquaculture circulating water system, aquatic product processing production water filtration, remove particulate impurities, residual bait and excrement, optimize the aquaculture water environment.

Conclusion

The RCP900-20EPP is a high-performance, high-flow enhanced polypropylene water filter cartridge specially developed for large-flow industrial and commercial water treatment scenarios, which perfectly integrates 2-micron high precision filtration, 900 L/h super high flux, ultra-low energy consumption and super strong dirt-holding capacity. Based on modified enhanced EPP raw materials and three-dimensional gradient melt-blown technology, the product has excellent mechanical strength, corrosion resistance and pressure resistance, and can maintain stable and efficient filtration performance under complex water quality and long-term continuous operation conditions. Its ultra-low initial pressure drop design realizes energy-saving operation of the large-flow system, and the backwash recoverable performance effectively reduces the use and maintenance cost. Compliant with international food-grade safety standards, free of harmful additives, and with standard universal interface, the RCP900-20EPP can be widely applied to pre-filtration and fine filtration of various large-flow water treatment systems, providing reliable front-end protection for subsequent precision filtration equipment, optimizing the overall operation efficiency of the system, and reducing the failure rate and maintenance cost of the subsequent equipment. As a professional high-flow water treatment filter element, the RCP900-20EPP is a cost-effective and reliable choice for industrial and commercial customers to solve large-flow water purification and pre-filtration problems, and can create more economic and environmental benefits for the safe, stable and energy-saving operation of water treatment systems.

RCP900-20EPP High-Efficiency Enhanced Polypropylene Water Filter Cartridge for High-Flow Industrial & Commercial Water Treatment Pre-Filtration Systems