As a professional manufacturer delivering comprehensive industrial water treatment solutions centered on Liquid Filters, we supply full-performance spiral wound membrane elements tailored for large-scale brackish water purification, commercial centralized water supply and factory process water production. The BW30MAX-400/34i is the flagship model of our MAX series, specially engineered with optimized high-flux internal structure, and its complete RO membrane flow rate test data becomes the core reference for customers to cut long-term system operation expense. As clearly marked in product specification sheets, the MAX series features outstanding high throughput and obvious system cost advantages compared with conventional standard RO membranes, perfectly matching the water production demands of projects pursuing high water yield and controllable overall investment.
As a professional manufacturer delivering comprehensive industrial water treatment solutions centered on Liquid Filters, we supply full-performance spiral wound membrane elements tailored for large-scale brackish water purification, commercial centralized water supply and factory process water production. The BW30MAX-400/34i is the flagship model of our MAX series, specially engineered with optimized high-flux internal structure, and its complete RO membrane flow rate test data becomes the core reference for customers to cut long-term system operation expense. As clearly marked in product specification sheets, the MAX series features outstanding high throughput and obvious system cost advantages compared with conventional standard RO membranes, perfectly matching the water production demands of projects pursuing high water yield and controllable overall investment.
Classified as a premium high-flux brackish water RO membrane, BW30MAX-400/34i adopts a standard 400 sq. ft membrane area paired with widened 34mil feed spacers, which fundamentally lifts the stable permeate output recorded in RO membrane flow rate indexes. Most traditional water treatment projects have to deploy more membrane elements, larger booster pumps and bigger pressure vessels to reach target water yield, pushing up equipment procurement and daily power costs. This high-flux membrane solves such pain points effectively: its upgraded separation layer and flow channel design deliver far higher single-element flow rate, allowing designers to reduce the total number of membrane elements and lower pump power configuration, thus greatly cutting the overall system expense from construction to daily operation. The universal 8040 standard size of this RO membrane element is compatible with all mainstream fiberglass and stainless steel pressure vessels on the market, supporting direct replacement of old low-flux membranes without large-scale pipeline reconstruction.
The superior RO membrane flow rate of BW30MAX-400/34i originates from two core structural upgrades targeting high flux and cost reduction. First, the product adopts ultra-hydrophilic cross-linked polyamide thin-film composite material, which drastically reduces the penetration resistance of water molecules; under identical operating pressure, more pure water can pass through the membrane surface to form stable permeate, directly lifting the single-element flow rate. Second, the widened 34i streamline feed spacer eliminates local water flow dead zones, lowers overall fluid resistance inside the element, and avoids flow rate attenuation caused by concentration polarization during long continuous operation.
When raw brackish water flows into the membrane element, water molecules quickly penetrate the hydrophilic membrane layer while scale ions, heavy metals and organic pollutants are intercepted and discharged with concentrated water. Unlike ordinary industrial RO membrane that balances flux and interception performance conservatively, BW30MAX-400/34i prioritizes high stable flow rate without sacrificing basic salt rejection performance. The smooth membrane surface also weakens organic colloid adhesion, slowing down flux decline caused by fouling, so the high RO membrane flow rate can be maintained for a longer service cycle, further reducing maintenance frequency and related chemical and labor costs to cut total system expense.
All data below are authentic standardized test records of BW30MAX-400/34i, focusing on high-flux indicators that help lower overall system expense:
Full Model: BW30MAX-400/34i High Flux Brackish Water RO Membrane
Structural Form: Standard 8040 spiral wound RO membrane with 34mil wide feed spacer
Effective Membrane Area: 400 sq. ft
Standard Test Environment: 25°C, 150 psi operating pressure, 2000 ppm NaCl feed water
Rated Stable RO Membrane Flow Rate: 12,500 – 14,200 GPD per element
Stabilized Salt Rejection Rate: 99.1% ~ 99.4%
Continuous Operating Pressure Range: 110 – 160 psi
Permissible Long-Term Operating pH: 2.0 – 11.0
Short-Term Chemical Cleaning pH Range: 1.0 – 13.0
Maximum Tolerable Feed Water SDI: ≤5
Single Element Pressure Drop: ≤14 psig
Core Cost-Saving Feature: Ultra-high single-element flow rate reduces required membrane quantity and pump power, cutting overall system investment and power consumption
Besides the core RO membrane flow rate index, the complete product datasheet also includes pressure resistance, temperature adaptability, anti-fouling simulation test data and cleaning recovery performance, providing full parameter support for engineers to design low-cost water treatment systems.
Every cost-cutting advantage of BW30MAX-400/34i can be fully verified by its outstanding RO membrane flow rate test data. The ultra-high single-element permeate output is its most prominent strength; to reach the same daily water production volume, projects using this high-flux membrane require fewer membrane elements compared with conventional standard RO membranes, which directly lowers the upfront procurement cost of membrane components and matching pressure vessels. Thanks to the boosted flow rate per element, the overall system can adopt lower-power booster pumps instead of high-power models, leading to significant daily electricity savings and slashing long-term energy expenditure that accounts for the largest share of system operating expense. The optimized 34i wide flow channel structure slows down the accumulation of suspended solids and organic fouling on the membrane surface, extending the interval between acid and alkali chemical cleaning cycles, which reduces the consumption of cleaning agents and cuts labor maintenance costs for system operators. In addition, the universal standard 8040 size realizes seamless replacement of outdated low-flux membrane elements on existing water equipment, without the need to modify pipelines, pump stations or control cabinets, minimizing the renovation investment of old water treatment stations. Even under long-term 24-hour continuous operation, its hydrophilic membrane layer maintains stable high flow rate without obvious performance attenuation, effectively extending the overall RO membrane lifespan and delaying the frequency of full membrane replacement to further control total system cost.
With the cost-saving high-flux RO membrane flow rate as its core competitiveness, BW30MAX-400/34i is widely adopted in all kinds of medium and large-scale brackish water treatment projects that aim to lower overall system expense. It serves as the core filter element for industrial factory underground brackish water desalination systems, delivering large-volume qualified process water with fewer membrane elements and lower power consumption to control factory daily operation costs. For large commercial water vending industrial parks and centralized drinking water supply systems serving communities, hotels and campuses, its ultra-high single-element flow rate satisfies massive daily water demand while cutting equipment investment and electricity bills. Medium and large food, beverage and dairy production factories also select this membrane to produce purified auxiliary production water; the high-flux design simplifies system layout and reduces the floor space occupied by water treatment equipment, saving plant construction and space costs. In suburban municipal tap water deep purification and small town brackish water centralized treatment projects, engineering designers rely on its superior RO membrane flow rate data to optimize system configuration, reasonably reduce supporting equipment specifications and deliver economical, stable long-running water purification solutions for public water supply projects.
Each batch of BW30MAX-400/34i membrane elements undergoes full offline sampling testing before delivery, with independent test reports recording complete RO membrane flow rate, salt rejection, pressure resistance and anti-fouling performance data. The whole production process strictly complies with the ISO 9001 quality management system, all raw materials in contact with water meet FDA food contact safety standards, and core performance indicators pass NSF drinking water safety certification. Complete technical datasheets, batch test reports and material traceability documents are provided together with goods for engineering design reference, project bidding filing and third-party factory acceptance inspection. Finished membranes are vacuum-sealed with special protective liquid to avoid dry film damage and surface pollution during transportation and storage, ensuring that the actual on-site RO membrane flow rate after installation stays consistent with the standard high-flux test data and maintains the expected system cost-saving effect.
Against the backdrop of rising raw material and electricity prices, more water treatment project owners and engineering companies prioritize membrane elements that can reduce overall system expense, bringing steady market growth demand for high-flux RO elements like BW30MAX-400/34i. Conventional standard flux membranes need more supporting equipment to reach target water yield, while ultra-high rejection specialty membranes carry higher unit procurement costs, making the MAX series high-flux model occupy a unique cost-performance market segment. Our R&D team will continue to optimize the hydrophilic polyamide formula and internal flow channel structure of BW30MAX-400/34i, further lift stable RO membrane flow rate and strengthen anti-fouling performance, so as to deliver stronger system cost reduction benefits and extend effective service life. Its energy-saving, low-investment characteristics also align with global low-carbon manufacturing and energy-saving policy trends, and this high-flux membrane will gain wider application in new large-scale water treatment project construction and old system energy-saving renovation work.
BW30MAX-400/34i RO Membrane, with verified superior RO membrane flow rate as its core feature, is a high-throughput brackish water RO membranespecially developed to lower the overall expense of water treatment systems. Through upgraded hydrophilic separation layer and widened 34mil flow spacer design, it achieves much higher single-element permeate output than ordinary standard RO membranes, cutting costs in three key links: upfront equipment procurement, daily power consumption and regular maintenance.
Compared with conventional medium-flux brackish water membrane products, BW30MAX-400/34i optimizes system configuration by relying on its outstanding flow rate index, reducing the total quantity of membranes and supporting pumps required for projects, and bringing long-term stable cost-saving returns to operators. For engineering designers, factory water station managers and equipment suppliers who pursue high water yield and controllable full-cycle system expenditure, BW30MAX-400/34i high-flux RO element is a reliable economical solution.
Q1: How does BW30MAX-400/34i’s high RO membrane flow rate reduce overall system expense?
A1: Its ultra-high single-element permeate output reduces the total number of membrane elements and pressure vessels required for the project, cutting initial procurement costs. Meanwhile, higher flow rate under medium operating pressure allows matching lower-power booster pumps to lower daily electricity expenditure, and its anti-fouling structure extends cleaning cycles to save labor and chemical costs, comprehensively slashing total system expense.
Q2: Can BW30MAX-400/34i directly replace old 8040 membrane elements on existing water treatment equipment?
A2: Yes. It adopts universal 8-inch 8040 standard size compatible with all mainstream pressure vessels. After replacement, the system’s overall water yield will be significantly improved thanks to the boosted RO membrane flow rate, and users can adjust pump operating parameters to cut power consumption without pipeline reconstruction.
Q3: Will the high-flux design lead to obvious decline in salt rejection performance?
A3: No. Although BW30MAX-400/34i prioritizes high flow rate, it still maintains stable 99.1%~99.4% salt rejection, fully meeting the purification standards of commercial and industrial brackish water projects, and the water quality will not be sacrificed to achieve higher permeate output.
Q4: What pretreatment equipment needs to be matched to keep stable high RO membrane flow rate?
A4: Standard multi-media filter, activated carbon filter and 5μm security filter must be equipped to control feed water SDI below 5, preventing solid particles from scratching the membrane surface and causing permanent attenuation of the high-flux performance that supports system cost savings.
Q5: What scenarios are not suitable for BW30MAX-400/34i high-flux membrane?
A5: It is designed for municipal tap water and low-pollution shallow brackish water. For heavily polluted industrial wastewater recycling projects with high organic content, professional heavy anti-fouling RO membrane series are recommended to maintain long-term stable flow rate performance.
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