The RCP100-40EPP is a large-specification, high-performance water treatment filtration product engineered with advanced Enhanced Polypropylene (EPP) membrane technology, optimized for medium-high flux, high-precision purification in medium and large-scale industrial, commercial and municipal water treatment scenarios. This model integrates an expanded high-efficiency filtration area with a high-selectivity EPP membrane core, and a reinforced industrial-grade anti-corrosion structural housing, achieving an ideal balance between stable water treatment throughput and high purification precision. It is fully compatible with standard industrial large-diameter water treatment pipeline setups, supports flexible modular parallel and series operation for scalable system configuration, and features excellent anti-pollution and water quality adaptability to work with complex raw water after simple targeted pre-treatment. Easy to install, operate and maintain, the RCP100-40EPP serves as a cost-effective premium core filtration solution for large-scale precision water purification projects, realizing industrial process water preparation, municipal tap water deep purification and wastewater resource reuse with low energy consumption and long-term operational stability.

The RCP100-40EPP features an ultra-high nominal filtration precision of 0.01 microns, with a nanoscale uniformly microporous EPP membrane surface that ensures consistent pore size distribution and eliminates filtration blind spots even under medium-high flux continuous operation. This high-precision filtration capability can effectively intercept and remove submicron suspended solids, colloidal particles, bacteria, algae spores, micro-particle impurities and macromolecular organic pollutants in raw water, ensuring that the effluent water quality stably meets national and industrial high-standard pure water requirements (Grade II ultra-pure water standard). The filtration precision remains unaltered with slight fluctuations in inlet water turbidity, temperature and impurity content within a reasonable range, avoiding micro-impurity leakage and providing a reliable technical guarantee for subsequent water treatment processes or direct use in industrial production and commercial high-standard water supply.

Under standard operating conditions (25℃, rated working pressure), the RCP100-40EPP achieves a pure water flux of 40 L/m²·h—a medium-high flux design tailored for large-scale high-precision water treatment projects that balances water throughput and purification quality. The product’s optimized low-resistance wide water flow channel design and high-permeability EPP membrane material effectively reduce flux attenuation caused by membrane fouling; within the normal operating range (water temperature 5℃-35℃, inlet water turbidity ≤10 NTU), the flux remains highly stable with a monthly attenuation rate of ≤4% during long-term continuous operation. This medium-high and stable flux performance fully meets the large-volume high-precision water demand of medium and large-scale industrial production, municipal centralized water supply and commercial high-standard water supply systems, without compromising purification precision for increased water output.

The RCP100-40EPP delivers excellent salt rejection performance under standard operating parameters, with a 98.8% rejection rate for monovalent inorganic salt ions and a 99.5% rejection rate for divalent inorganic salt ions—surpassing conventional EPP membrane products of the same specification. The ultra-dense selective separation layer of the enhanced EPP membrane material forms an efficient ion barrier, which can effectively block the passage of various salt ions, inorganic impurities and dissolved solids while ensuring the smooth penetration of water molecules. The salt rejection rate remains stable (variation ≤0.3%) even with slight fluctuations in inlet water salinity (≤2500 mg/L) and operating pressure, making the product an ideal choice for large-scale pure water preparation, high-standard brackish water desalination and industrial process water softening in industries with strict salt content limits such as electronic manufacturing, food and beverage processing and pharmaceutical production.

During normal continuous operation at rated medium-high flux and standard water temperature, the pressure drop of the RCP100-40EPP is strictly controlled within the low range of 0.10-0.15 MPa. The product adopts a highly optimized low-resistance internal structural design, including a smooth wide-diameter water inlet/outlet channel, a high-porosity porous support layer with uniform pore distribution and a streamlined filtration core layout, which minimizes water flow resistance in the medium-high flux filtration process. This low pressure drop performance significantly reduces the energy consumption of the water treatment system’s booster pump, lowers the overall operational energy cost of the system, and fundamentally avoids membrane core damage caused by excessive pressure accumulation. The pressure drop has no obvious increase during the normal service life; a slight rise (≤0.04 MPa) is only observed when regular cleaning is required, which is easy to identify and handle, ensuring the long-term stable and energy-efficient operation of the entire large-scale water treatment system.

The Molecular Weight Cutoff of the RCP100-40EPP is accurately calibrated at 800 Da (Daltons), a precise setting that enables the selective interception of medium and large molecular weight impurities in water while allowing water molecules and beneficial small inorganic molecules to pass through smoothly—even under medium-high flux operating conditions. This optimized MWCO performance can effectively block organic medium molecules, colloidal substances, medium-molecular-weight polymers, protein impurities and polysaccharides with a molecular weight higher than 800 Da, and is specially suitable for the high-precision separation and purification of water containing medium-molecular-weight organic pollutants in large-scale industrial and municipal water treatment scenarios. The accurate MWCO design perfectly combines medium-high flux operation with high purification precision, ensuring high-standard effluent quality and meeting the differentiated large-scale high-precision water quality requirements of various industrial and commercial application scenarios.

The core filtration membrane of the RCP100-40EPP is a multi-layer composite enhanced EPP membrane with a total thickness of 165 μm, consisting of a 28 μm ultra-dense selective separation layer (the core functional layer for high-precision filtration and high salt rejection), a 107 μm high-strength porous support layer (providing super strong mechanical support for the membrane under medium-high flux and pressure-stable working conditions) and a 30 μm anti-fouling protective layer (reducing membrane surface pollution and mechanical wear). The multi-layer thickness and material optimization design are exclusively tailored for medium-high flux, high-precision operation: the ultra-dense selective separation layer is made of high-purity EPP material with advanced nanoscale pore formation technology, ensuring uncompromised high filtration and salt rejection performance under high water flow velocity; the high-strength porous support layer adopts a reinforced cross-linked polypropylene structure, enhancing the membrane’s resistance to pressure and water flow impact, and avoiding membrane deformation or damage during long-term continuous medium-high flux operation; the anti-fouling protective layer is modified with special hydrophilic and anti-adhesion technology, which effectively reduces the adsorption of pollutants on the membrane surface and maintains the long-term high permeability and purification efficiency of the membrane core.

Under standard operating conditions and strict adherence to the regular maintenance and cleaning schedule, the recommended replacement cycle of the RCP100-40EPP is 30-48 months—an extended service life designed for medium-high flux, large-scale operating scenarios, far longer than conventional medium-flux EPP membrane filtration products. The actual replacement cycle can be flexibly adjusted according to the actual inlet water quality and operating frequency: for raw water with low impurity content, low salinity and regular professional deep cleaning (1-2 times per quarter), the replacement cycle can be extended to 48 months; for raw water with moderate impurity content and 24-hour continuous medium-high flux operation, the recommended replacement cycle is 30 months to ensure the stable operation of high filtration precision, flux and salt rejection performance. The main indicators for replacement include a significant decrease in flux (≥18%), a sharp rise in pressure drop (≥0.06 MPa) or a noticeable decline in salt rejection rate (≥0.6%); the product’s modular integrated design makes the replacement process simple and fast, requiring no professional special tools, and a single operator can complete the entire replacement operation within 40 minutes, minimizing the downtime of the large-scale water treatment system and ensuring the continuous operation of industrial production and municipal water supply.

The RCP100-40EPP has a number of outstanding product features that make it a competitive choice in the large-specification medium-high flux water treatment market, combining advanced enhanced EPP membrane technology with large-scale structural design for professional high-precision water purification scenarios. First, it adopts food-grade and industrial-grade dual-certified enhanced EPP membrane materials, which are non-toxic, odorless, free of heavy metal leaching and have no secondary pollution to water quality, fully meeting the safety and purity requirements of industrial production, commercial water supply and municipal drinking water treatment. Second, it features medium-high flux & high-precision dual optimization: the 40 L/m²·h stable medium-high flux and 0.01 micron ultra-high filtration precision realize the perfect balance between large water treatment throughput and high purification quality, breaking the traditional trade-off between flux and precision of conventional filtration products. Third, it has excellent salt rejection & stable MWCO performance: the 98.8% monovalent and 99.5% divalent salt rejection rate, combined with the 800 Da calibrated MWCO, ensures high-standard effluent water quality and meets the pure water requirements of various large-scale industrial and commercial scenarios. Fourth, it features low pressure drop & high energy efficiency: the 0.10-0.15 MPa low operating pressure drop significantly reduces the system’s booster pump energy consumption, realizing energy-saving and environmentally friendly operation of large-scale water treatment systems and reducing long-term operational costs. Fifth, the product has superior structural stability & water quality adaptability: it can operate stably under a wide working pressure range of 0.6-1.2 MPa, resistant to short-term pressure fluctuations and water flow impact without membrane deformation; with a pH adaptation range of 3-10, it can adapt to the treatment of surface water, groundwater, tap water and industrial secondary water with different quality characteristics after simple pre-treatment. Sixth, it supports large-specification modular design & flexible expansion: the expanded filtration area design meets the large-volume high-precision water demand, and multiple units can be connected in parallel or series to realize flexible expansion of system processing capacity and purification precision, adapting to the different scale requirements of various large-scale water treatment projects from medium to ultra-large. Seventh, it has enhanced anti-fouling performance & extended service life: the membrane surface hydrophilic modification technology reduces pollutant adsorption, and the optimized flow channel design slows down membrane fouling rate, realizing a 30-48 months extended replacement cycle and effectively reducing the system’s maintenance and replacement costs. Eighth, it features easy installation & maintenance: the modular integrated structural design matches standard industrial pipeline accessories, requiring no complex secondary modification, and the disassembly and replacement process is simple and fast, reducing the labor cost of system operation and maintenance.

Benefiting from its core advantages of large specification, medium-high flux, high precision and stable performance, the RCP100-40EPP is widely applicable to various medium and large-scale industrial, commercial, municipal and environmental protection water treatment fields that require both large water volume and high purification quality. In the industrial field, it is the core filtration product for large-scale pure water preparation in electronic component manufacturing, food and beverage deep processing, pharmaceutical bulk drug production and chemical process water treatment; it is also used for large-flow industrial wastewater recycling treatment (printing and dyeing, food processing, electroplating wastewater) to realize water resource reuse and reduce enterprise water consumption costs. In the commercial field, it is applied to large-scale central water purification systems in high-end hotel clusters, super shopping malls, large office building complexes and university campuses, as well as high-standard pure water supply systems in large-scale catering parks and bottled water production lines with high daily water demand. In the municipal water supply field, it is used for large-scale tap water deep purification in new urban areas, central business districts and large residential quarters, improving municipal drinking water quality to meet high-standard pure water requirements and upgrading residents’ water use experience. In the environmental protection field, it is applied to large-scale brackish water desalination in coastal and arid saline-alkali areas, rural centralized drinking water treatment for large villages and towns, and large-flow landscape water quality improvement and domestic sewage centralized treatment in industrial parks, realizing the efficient utilization of water resources and environmental protection emission standards. In addition, this model is also suitable for the large-scale high-precision water treatment of mobile water supply equipment in large construction sites, and the process water preparation in aerospace, new energy battery manufacturing and other emerging high-end manufacturing fields with high pure water demand.

In summary, the RCP100-40EPP is a high-quality, large-specification, multi-scenario applicable water treatment filtration product that integrates advanced enhanced EPP membrane technology, optimized medium-high flux structural design and humanized functional design for large-scale high-precision water purification scenarios. As a flagship large-specification model of the EPP membrane series for medium-high flux high-precision applications, it breaks the traditional trade-off between water treatment throughput and purification precision, realizing a 40 L/m²·h stable medium-high flux, 0.01 micron ultra-high filtration precision, 99.5% divalent salt rejection rate and 800 Da calibrated MWCO while maintaining a 0.10-0.15 MPa low pressure drop. Its outstanding advantages such as high purification precision, stable medium-high flux, excellent salt rejection performance, low energy consumption, extended service life (30-48 months) and flexible modular configuration not only ensure the high-standard effluent quality for large-scale water treatment projects, but also effectively reduce the overall operation, maintenance and energy consumption costs of the system. The product’s large-specification design meets the medium and large-scale high-precision water demand of industrial production, municipal supply and commercial operation, and its excellent compatibility with various water treatment processes (RO, EDI, UF, etc.) makes it a versatile and reliable core filtration component for large-scale water treatment systems. Whether it is for large-scale pure water preparation in industrial production, municipal tap water deep purification, commercial high-standard centralized water supply or environmental protection wastewater resource reuse, the RCP100-40EPP can provide a customized, efficient and reliable one-stop large-scale high-precision filtration solution. Adhering to the design concept of efficiency, precision, energy conservation and durability, this product can help users optimize large-scale water treatment processes, improve water resource utilization efficiency, reduce environmental protection investment and realize the sustainable development of water treatment projects, making it an ideal core filtration choice for various medium and large-scale medium-high flux high-precision water treatment application scenarios.

The RCP100-40EPP is a flagship large-specification medium-high flux model in the professional enhanced EPP membrane water treatment series, and the matching related products cover core filtration series models, special pre-filtration protection, professional cleaning agents, high-precision intelligent control systems and customized installation accessories, fully meeting the differentiated large-scale high-precision water treatment needs of different users and various medium-high flux application scenarios. For the same series core filtration products, the RCP080-40EPP is a medium-specification medium-high flux model with a reduced filtration area, suitable for medium-scale high-precision water treatment projects such as medium-sized industrial workshops and regional commercial water supply systems; the RCP120-40EPP is an extra-large-specification medium-high flux model with an expanded filtration area, designed for ultra-large-scale high-precision water treatment projects such as large industrial parks and municipal central water supply plants. The RCP100-30EPP is a low-medium flux high-precision model with a 30 L/m²·h pure water flux, prioritizing higher purification precision for large-scale water treatment projects with strict effluent quality requirements; the RCP100-50EPP is a high-flux upgraded model with a 50 L/m²·h pure water flux, designed for ultra-large-flow industrial production and municipal water supply projects with slightly higher water volume demands. In terms of matching pre-filtration products, the RCP-PRE08 EPP Large-Spec Special Pre-Filter is specially designed for the large-specification EPP series, with a 2 μm ultra-fine coarse filtration precision and a large-flow water channel design, which can effectively remove fine particle impurities, sand and colloid in raw water, avoiding membrane fouling and damage caused by fine particles and extending the service life of the large-spec EPP membrane core by 20-25%. For professional cleaning products, the RCP-CLE08 EPP Medium-High Flux Membrane Special Cleaning Agent is a two-component high-efficiency cleaning agent, specially formulated for the pollution characteristics of EPP membranes under medium-high flux operation, which can quickly and effectively remove organic fouling, scale, microbial slime and inorganic salt deposits on the membrane surface without damaging the dense separation layer, restore the filtration flux and salt rejection performance of the EPP membrane, and reduce the frequency of core replacement. In terms of intelligent control accessories, the RCP-CONT08 Large-Spec Intelligent Operation and Monitoring Unit is perfectly matched with the large-specification EPP series, which can realize real-time and high-precision monitoring of key operating parameters such as flux, pressure drop, inlet/outlet water salinity, TDS, turbidity and temperature for single or multiple parallel units, and support automatic alarm, automatic low-pressure backwashing, intelligent cleaning reminder and remote data transmission, greatly improving the automation level and operational stability of large-scale water treatment systems and reducing manual operation and maintenance costs. In addition, the RCP-ACC07 Large-Spec EPP Special Installation Accessory Kit provides all the necessary high-pressure anti-leakage connectors, industrial-grade and food-grade gaskets and fixed brackets for the RCP100-40EPP and other large-spec EPP series products, supporting quick installation and connection with different standard large-diameter industrial and municipal water treatment pipelines, and ensuring the airtightness and stability of pipeline connection to avoid secondary pollution. The RCP-BR06 Medium-Pressure Membrane Backwashing Pump is a special matching accessory for medium-high flux EPP filtration products, which can realize efficient variable-pressure reverse backwashing of the membrane core, further reduce membrane fouling, restore membrane permeability and extend the service life of the EPP membrane core by an additional 15-20%. The RCP-MON05 Large-Scale Multi-Parameter Water Quality Analyzer is a matching accessory for the RCP-CONT08 unit, which can realize real-time and accurate detection of inlet and outlet water quality parameters such as TDS, conductivity, pH, ORP and turbidity with a wide detection range, and transmit data to the intelligent control unit in real time, realizing closed-loop monitoring and intelligent control of the entire large-scale water treatment system.