The RCP200-40EPP is a heavy-duty large-specification water treatment filtration product engineered with advanced Enhanced Polypropylene (EPP) membrane technology, specially optimized for 40 L/m²·h stable flux and high-precision purification in large-capacity industrial, municipal, and commercial water treatment scenarios with ultra-massive water volume demands. As an upgraded large-spec model of the EPP membrane series, it integrates an extra-expanded high-efficiency filtration area with a high-selectivity, high-load EPP membrane core, and is equipped with a reinforced heavy-duty industrial-grade anti-corrosion and pressure-resistant structural housing. This design achieves an optimal balance between ultra-large processing capacity, stable medium-high flux and reliable high-precision purification, a core advantage tailored for large-scale water treatment projects such as municipal water supply plants, large industrial parks and heavy industry production bases that pursue massive water output and consistent effluent quality standards. It is fully compatible with industrial large-diameter pressure pipeline setups, supports flexible modular parallel and series operation for on-demand system capacity expansion and precision adjustment, and features excellent anti-pollution, anti-load and broad water quality adaptability. The product enables stable long-term continuous operation with complex raw water sources (surface water, groundwater, industrial secondary water) after simple targeted pre-treatment (2 μm coarse filtration). With a humanized heavy-duty modular structure, it is easy to install, operate and maintain, and serves as a cost-effective, high-reliability core filtration solution for ultra-large-capacity water purification projects, realizing large-scale industrial process water preparation, municipal tap water deep purification, large-flow wastewater resource reuse and commercial high-standard centralized water supply with low operational energy consumption and consistent long-term performance.

The RCP200-40EPP features an ultra-high nominal filtration precision of 0.01 microns, with a nanoscale uniformly microporous EPP membrane surface formed by advanced phase inversion and high-density molding technology. The membrane pore size distribution is highly consistent, and there are no filtration blind spots even under the ultra-large load operation of 40 L/m²·h stable flux and continuous water passing. 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 Grade II ultra-pure water standards, as well as the strict purity requirements of large-scale industrial production, municipal drinking water supply and commercial high-standard water use. The filtration precision remains completely unaltered with slight fluctuations in inlet water turbidity (≤15 NTU), temperature (5℃-38℃) and impurity content within a reasonable range, avoiding micro-impurity leakage and providing a solid and reliable technical guarantee for subsequent water treatment processes or direct use in various ultra-large-flow water demand scenarios.

Under standard operating conditions (25℃, rated working pressure), the RCP200-40EPP achieves a pure water flux of 40 L/m²·h—a medium-high stable flux design exclusively tailored for its ultra-large-spec filtration area and heavy-duty operating conditions. Different from small and medium-spec models, this flux setting is optimized for long-term high-load stability, breaking the trade-off between ultra-large processing capacity and flux stability of traditional large-spec filtration products. The product’s optimized low-resistance wide-channel water flow design and high-permeability EPP membrane material effectively minimize flux attenuation caused by membrane fouling and high-load operation; within the normal operating range (water temperature 5℃-38℃, inlet water turbidity ≤15 NTU), the flux remains highly stable with a monthly attenuation rate of ≤3.8% during long-term continuous operation. This ultra-stable flux performance, combined with the extra-expanded filtration area, forms an ultra-large processing capacity of the product, fully meeting the massive water volume demand of municipal centralized water supply systems, large industrial production lines, industrial park shared water supply and large-flow wastewater treatment projects, without sacrificing purification precision for increased water output scale, and effectively ensuring the consistency of effluent quality in large-capacity operation.

The RCP200-40EPP delivers excellent and stable salt rejection performance under standard large-spec high-load operating parameters, with a 98.8% rejection rate for monovalent inorganic salt ions and a 99.5% rejection rate for divalent inorganic salt ions—performance levels that surpass conventional EPP membrane products of the same flux specification and set a high industry standard for large-spec polypropylene filtration products. The ultra-dense, high-purity selective separation layer of the enhanced EPP membrane material forms an efficient ion barrier with strong molecular selectivity, which can effectively block the passage of various salt ions, inorganic impurities and dissolved solids while ensuring the smooth and rapid penetration of water molecules even under the high-load operation of 40 L/m²·h stable flux and ultra-large water passing volume. The salt rejection rate remains highly stable (variation ≤0.3%) even with slight fluctuations in inlet water salinity (≤3000 mg/L) and operating pressure, making the product an ideal core filtration choice for large-scale pure water preparation, high-standard brackish water desalination, industrial process water softening and municipal tap water deep purification in industries with strict salt content limits such as petrochemical industry, food and beverage deep processing, electronic component manufacturing and new energy battery production bases.

During normal continuous operation at rated 40 L/m²·h stable flux and standard water temperature (25℃), the pressure drop of the RCP200-40EPP is strictly controlled within the low range of 0.10-0.15 MPa. Aiming at the ultra-large-spec filtration area and large water passing volume, the product adopts a highly optimized heavy-duty low-resistance internal structural design, including a smooth large-diameter water inlet/outlet channel, a high-porosity high-strength porous support layer with uniform pore distribution and a streamlined multi-channel filtration core layout, which minimizes water flow resistance in the filtration process to the greatest extent and avoids local pressure loss caused by large water volume passing. This low pressure drop performance for large-spec high-load operation significantly reduces the energy consumption of the water treatment system’s booster pump and water delivery pump, lowers the overall operational energy cost of the ultra-large-capacity water treatment system, and fundamentally avoids membrane core damage and structural deformation caused by excessive pressure accumulation in the pipeline and filtration core under large-flow operation. The pressure drop has no obvious increase during the normal service life; a slight rise (≤0.035 MPa) is only observed when regular cleaning is required, which is easy to identify and handle, ensuring the long-term stable, energy-efficient and low-loss operation of the entire ultra-large-capacity water treatment system.

The Molecular Weight Cutoff of the RCP200-40EPP is accurately calibrated at 850 Da (Daltons), a precise setting tailored for its ultra-large-spec filtration area, 40 L/m²·h stable flux and large-capacity water treatment scenarios. This MWCO value 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 continuous high-load operation with ultra-large water passing volume. This optimized MWCO performance can effectively block organic medium molecules, colloidal substances, medium-molecular-weight polymers, protein impurities, polysaccharides and other micro-pollutants with a molecular weight higher than 850 Da, and is specially suitable for the high-precision separation and purification of water containing medium-molecular-weight organic pollutants in large-scale industrial production, municipal centralized water supply and large-flow wastewater treatment. The accurate MWCO design perfectly combines large-spec high-load operation, stable flux and high purification precision, ensures high-standard and consistent effluent water quality, and meets the differentiated ultra-large-capacity high-precision water quality requirements of various industrial, commercial and municipal application scenarios.

The core filtration membrane of the RCP200-40EPP is a heavy-duty multi-layer composite enhanced EPP membrane with a total thickness of 175 μm, scientifically composed of three functional layers that are exclusively optimized for its ultra-large-spec, 40 L/m²·h stable flux and high-load long-term operation: a 32 μm ultra-dense selective separation layer (the core functional layer for high-precision filtration and high salt rejection, made of high-purity high-strength EPP material with advanced nanoscale pore formation technology, ensuring uncompromised purification performance under high water flow velocity and long-term load operation); a 113 μm high-strength porous support layer (providing super strong mechanical support and pressure resistance for the membrane under high-load and large-flow working conditions, adopting a reinforced cross-linked polypropylene structure with optimized porosity and pore size distribution to avoid membrane deformation and damage caused by high water flow impact and long-term load); and a 30 μm anti-fouling protective layer (modified with special hydrophilic and anti-adhesion heavy-duty technology, reducing membrane surface pollution and mechanical wear, and inhibiting the adsorption of organic pollutants and microorganisms to slow down fouling rate under high-load large-flow operation). The three-layer thickness and material optimization design, combined with heavy-duty molding technology, ensure the membrane’s long-term structural stability, high purification efficiency and anti-load performance while maintaining excellent water permeability, which is the key to realizing the balance between ultra-large processing capacity, stable flux and high precision of the product.

Under standard operating conditions and strict adherence to the regular maintenance and cleaning schedule, the recommended replacement cycle of the RCP200-40EPP is 30-42 months—an extended service life specially designed for its ultra-large-spec, 40 L/m²·h stable flux and high-load large-capacity operating scenarios, far longer than conventional small and medium-spec EPP membrane filtration products and ordinary large-spec polypropylene membrane models. 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 42 months; for raw water with moderate impurity content and 24-hour continuous high-load operation, the recommended replacement cycle is 30 months to ensure the stable operation of high filtration precision, flux and salt rejection performance; for raw water with relatively high impurity content, the cycle can be appropriately shortened to 26-30 months based on real-time detection data of water quality and operating parameters. The main quantitative 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 (≥0.5%); the product’s heavy-duty modular integrated design makes the replacement process simple and fast, requiring no professional special tools, and a small operating team can complete the entire replacement operation within 45 minutes, minimizing the downtime of the ultra-large-capacity water treatment system and ensuring the continuous operation of large-scale industrial production and municipal centralized water supply.

The RCP200-40EPP has a number of outstanding core features that make it a highly competitive choice in the ultra-large-spec water treatment market, combining advanced enhanced EPP membrane technology with heavy-duty large-spec structural design for professional 40 L/m²·h stable flux and ultra-large-capacity high-precision water purification scenarios. 1. Ultra-large-spec filtration area & 40 L/m²·h stable flux dual optimization: Realizes the perfect balance between ultra-massive water processing capacity and stable medium-high flux, breaking the trade-off between large capacity and flux stability of traditional large-spec filtration products, and meeting the ultra-large-volume high-precision water demand of large-scale projects. 2. Food & industrial dual-certified heavy-duty EPP membrane material: Adopts food-grade and industrial-grade dual-certified enhanced EPP membrane materials with heavy-duty molding technology, non-toxic, odorless, free of heavy metal leaching and organic matter precipitation, no secondary pollution to water quality, and has excellent anti-load and anti-fouling performance, fully meeting the strict safety, purity and long-term operation requirements of large-scale industrial production, municipal drinking water supply and commercial high-standard water use. 3. Excellent salt rejection & calibrated MWCO performance: 98.8% monovalent and 99.5% divalent salt rejection rate, combined with 850 Da accurately calibrated MWCO, ensures high-standard and consistent effluent water quality and stable selective interception of impurities, meeting the pure water requirements of various ultra-large-capacity industrial, commercial and municipal scenarios. 4. Low pressure drop & high energy efficiency for large-spec high-load operation: The 0.10-0.15 MPa low operating pressure drop under 40 L/m²·h stable flux and large-capacity operation significantly reduces the energy consumption of the system’s water delivery and booster equipment, realizing energy-saving and environmentally friendly operation of ultra-large-capacity water treatment systems and effectively cutting down users’ long-term operational costs. 5. Superior heavy-duty structural stability & broad water quality adaptability: The reinforced heavy-duty engineering plastic housing and high-strength EPP membrane material enable stable operation under a wide working pressure range of 0.6-1.3 MPa, resistant to short-term pressure fluctuations and large water flow impact without membrane deformation and structural damage; with a pH adaptation range of 3-10, it can adapt to the treatment of surface water, groundwater, tap water and various industrial secondary water with different quality characteristics after simple 2 μm pre-filtration. 6. Heavy-duty modular design & flexible on-demand expansion: Extra-expanded filtration area design meets the ultra-massive water demand of large-scale projects; multiple units can be connected in parallel or series to realize flexible expansion of system processing capacity and purification precision, adapting to different scale requirements of various water treatment projects from large to ultra-large without changing the core pipeline layout, and the modular structure is easy for centralized management and maintenance. 7. Enhanced anti-fouling performance & extended service life: Membrane surface hydrophilic and anti-adhesion heavy-duty modification technology reduces pollutant adsorption by more than 30%, and optimized low-resistance multi-channel flow channel design slows down membrane fouling rate under high-load large-flow operation; the 30-42 months extended replacement cycle effectively reduces the system’s maintenance and replacement costs, and improves the overall operation efficiency of the large-capacity water treatment system. 8. Heavy-duty integrated modular structure & easy maintenance: The whole machine adopts an integrated heavy-duty modular design that matches industrial large-diameter pressure pipeline accessories, no complex secondary modification required for installation; disassembly, online cleaning and core replacement processes are simple and fast, and regular daily maintenance does not require professional technical personnel, greatly reducing the labor cost and maintenance difficulty of system operation and maintenance.

Benefiting from its core advantages of ultra-large-spec filtration area, 40 L/m²·h stable flux, high precision, heavy-duty stable performance and broad adaptability, the RCP200-40EPP is widely applicable to various ultra-large-capacity industrial, commercial, municipal and environmental protection water treatment fields that require both massive water volume output and high purification quality. In the large-scale industrial field, it is the core filtration product for large-scale pure water preparation in petrochemical production bases, food and beverage deep processing industrial parks, electronic component manufacturing clusters, new energy battery production bases and heavy industry production lines, realizing large-scale industrial process water supply and large-flow industrial wastewater resource reuse, reducing enterprise water consumption costs and meeting national environmental protection emission standards. In the municipal water supply field, it is the core filtration equipment for municipal tap water deep purification in large and medium-sized cities, new urban areas and central business districts with massive water demand, improving municipal drinking water quality to meet high-standard pure water requirements, and ensuring the safe and high-quality water supply for urban residents and commercial areas. In the commercial and industrial park field, it is applied to large-scale central water purification systems in super large industrial parks, high-tech development zones, large logistics parks and commercial complexes, providing high-standard pure water for park enterprises and commercial facilities, and realizing the shared and efficient utilization of water resources in the park. In the environmental protection field, it is applied to large-scale brackish water desalination in coastal and arid saline-alkali areas with large population, rural centralized drinking water treatment for large towns, large-flow landscape water quality improvement and municipal sewage centralized treatment, realizing the efficient utilization of water resources and the improvement of regional water ecological environment. In addition, this model is also suitable for the large-scale high-capacity water treatment of mobile water supply equipment in large construction sites, large-scale field operation bases and emergency water supply scenarios, as well as the process water preparation in aerospace, shipbuilding and marine engineering bases with large water volume demand and high pure water requirements.

In summary, the RCP200-40EPP is a heavy-duty ultra-large-specification, high-performance and multi-scenario applicable water treatment filtration product that integrates advanced enhanced EPP membrane technology, optimized 40 L/m²·h stable flux design and heavy-duty large-spec structural design for ultra-large-capacity high-precision water purification scenarios. As a flagship ultra-large-spec model of the EPP membrane series, it breaks the traditional performance limit between ultra-large processing capacity and flux stability, purification precision of polypropylene membrane products, realizing an ultra-large filtration area, 40 L/m²·h stable flux, 0.01 micron ultra-high filtration precision, 99.5% divalent salt rejection rate and 850 Da calibrated MWCO while maintaining a low pressure drop of 0.10-0.15 MPa under high-load large-capacity operation. Its outstanding advantages including ultra-large-capacity and stable flux dual optimization, excellent salt rejection performance, low energy consumption for large-spec high-load operation, superior heavy-duty structural stability, broad water quality adaptability, flexible modular configuration and easy installation and maintenance not only ensure the high-standard and consistent effluent quality for ultra-large-capacity water treatment projects, but also effectively reduce the overall operation, maintenance and energy consumption costs of the system. The product’s ultra-large-spec design and 40 L/m²·h stable flux perfectly meet the ultra-massive high-precision water demand of large-scale industrial production, municipal centralized water supply, commercial park shared water supply and environmental protection treatment, and its excellent compatibility with various mainstream large-capacity water treatment processes (RO, EDI, UF, UV disinfection, ozone oxidation, coagulation and sedimentation) makes it a versatile, high-reliability core filtration component for ultra-large-capacity water treatment systems. Whether it is for large-scale pure water preparation in industrial production bases, municipal tap water deep purification in large and medium-sized cities, commercial park high-standard centralized water supply, large-scale brackish water desalination in special areas or large-flow wastewater resource reuse, the RCP200-40EPP can provide a customized, efficient and reliable one-stop ultra-large-capacity high-precision filtration solution. Adhering to the design concept of large capacity, high stability, energy conservation and durability, this product can help users optimize ultra-large-capacity water treatment processes, improve water resource utilization efficiency on a large scale, reduce environmental protection investment and operational costs, and realize the sustainable development of water treatment projects, making it an ideal core filtration choice for various ultra-large-capacity high-precision water treatment application scenarios.

The RCP200-40EPP is a flagship ultra-large-specification 40 L/m²·h stable flux model in the professional enhanced EPP membrane water treatment series, and the matching related products cover core filtration series models, special heavy-duty pre-filtration protection, professional cleaning agents, high-precision intelligent control systems and customized heavy-duty installation accessories, fully meeting the differentiated ultra-large-capacity high-precision water treatment needs of different users and various application scenarios. For the same series core filtration products, there are four complementary models to meet different large-scale project demands: RCP150-40EPP (medium-large-specification 40 L/m²·h stable flux model with reduced filtration area, suitable for medium-large-scale water treatment projects such as medium-sized industrial parks, county-level municipal water supply plants and large food processing enterprises with daily water demand of 500-1000 tons); RCP250-40EPP (super-large-specification 40 L/m²·h stable flux model with expanded filtration area, designed for ultra-large-scale water treatment projects such as municipal central water supply plants, national-level industrial parks and coastal large-scale brackish water desalination projects with daily water demand ≥2000 tons); RCP200-60EPP (ultra-large-specification high-flux model with 60 L/m²·h pure water flux, suitable for ultra-large-capacity water treatment projects with higher water output efficiency requirements); RCP200-30EPP (ultra-large-specification low-flux high-precision model with 30 L/m²·h pure water flux, suitable for ultra-large-capacity water treatment projects with higher purification precision requirements such as large electronic component manufacturing bases). In terms of matching pre-filtration products, the RCP-PRE15 EPP Heavy-Duty Special Pre-Filter is specially designed for the ultra-large-spec high-load EPP series, with a 2 μm ultra-fine coarse filtration precision and a heavy-duty large-flow water channel design optimized for 40 L/m²·h stable flux operation, which can effectively remove fine particle impurities, sand, colloid and suspended solids in raw water, avoid membrane fouling and damage caused by fine particles under high-load large-flow operation, and extend the service life of the ultra-large-spec EPP membrane core by 25-30%. For professional cleaning products, the RCP-CLE15 EPP Heavy-Duty Membrane Special Cleaning Agent is a two-component high-efficiency cleaning agent (acidic + alkaline) specially formulated for the pollution characteristics of EPP membranes under ultra-large-spec high-load operation and complex raw water quality conditions, 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 to more than 95% of the original state, and reduce the frequency of core replacement. In terms of intelligent control accessories, the RCP-CONT15 Ultra-Large-Spec EPP Intelligent Operation and Monitoring Unit is perfectly matched with the ultra-large-spec EPP series, which can realize real-time and high-precision monitoring of key operating parameters (flux, pressure drop, inlet/outlet water salinity, TDS, turbidity, temperature, water flow, etc.) 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 ultra-large-capacity water treatment systems and reducing manual operation and maintenance costs by more than 35%. In addition, the key supporting accessories also include two exclusive heavy-duty products for ultra-large-spec high-load operation: RCP-ACC14 Ultra-Large-Spec EPP Heavy-Duty Installation Accessory Kit (providing heavy-duty high-pressure anti-leakage connectors, industrial-grade/food-grade anti-aging gaskets, reinforced fixed brackets and pressure-resistant sealing parts that are resistant to large water flow impact, supporting quick installation with industrial large-diameter pressure pipelines and ensuring connection airtightness to avoid secondary pollution and pressure loss under large-flow operation) and RCP-BR13 Medium-Pressure EPP Heavy-Duty Membrane Backwashing Pump (special matching accessory for ultra-large-spec EPP filtration products, realizing efficient variable-pressure reverse backwashing of the membrane core with adjustable pressure and large backwashing flow, further reducing membrane fouling under high-load large-flow operation, restoring membrane permeability, and extending the service life of the EPP membrane core by an additional 20-25%). The RCP-MON12 Ultra-Large-Spec EPP High-Precision Water Quality Analyzer is a high-precision matching accessory for the RCP-CONT15 unit, which can realize real-time and accurate detection of multi-dimensional water quality parameters (TDS, conductivity, pH, ORP, turbidity, water flow, etc.) with a wide detection range and high response speed, and transmit data to the intelligent control unit in real time, realizing closed-loop high-precision monitoring and intelligent control of the entire ultra-large-capacity water treatment system.