TMG20-400 RO Membrane Performance Data – Stable Flux & Salt Rejection Technical Index

Product Introduction

As a professional manufacturer supplying comprehensive water purification solutions centered on Liquid Filters, we deliver reliable filtration components for commercial drinking water stations, hotel water supply systems and municipal brackish water treatment projects. Our TMG20-400, a classic standard rejection RO membrane, is a mature spiral wound RO membrane designed for daily tap water and shallow groundwater purification, with complete standardized RO membrane performance data recording its stable flux and consistent salt rejection under long-running working conditions.

Classified as universal brackish water RO membrane according to product classification forms, the TMG series features balanced overall performance without excessive operating pressure or strict pretreatment thresholds. Many small and medium-sized water treatment operators favor this element because its fixed technical indexes will not fluctuate drastically with slight changes in raw water turbidity. All core running indicators are fully recorded in complete RO membrane performance data, covering rated water yield, desalination rate, pressure loss and temperature adaptability. The standard 8040 size matches all mainstream pressure vessels on the market, allowing direct replacement of old RO membrane element without modifying supporting pumps or pipeline layouts, greatly lowering equipment upgrade costs for project owners.

Working Principle

The stable running performance reflected in TMG20-400’s RO membrane performance data originates from its optimized cross-linked polyamide thin-film composite layer and streamlined internal flow channels. This balanced-performance reverse osmosis membrane relies on pressure-driven molecular interception, separating dissolved salts, heavy metals and organic colloids from water molecules through uniform compact separation pores.

When raw brackish water flows into the membrane element under conventional working pressure, pure water penetrates the hydrophilic membrane surface to form qualified permeate, while scaling ions and impurities are concentrated and discharged through the concentrated water channel. The evenly distributed surface charge avoids local concentration polarization, which is the key reason for its steady flux and salt rejection shown in technical indexes. Different from high-pressure or ultra-low energy special membranes, this general-purpose industrial RO membrane adopts medium fluid resistance spacers to balance water production efficiency and anti-fouling capacity, presenting mild and stable operation data in long-cycle tests and serving as a cost-effective anti-fouling RO membrane for regular water sources.

Technical Performance Indexes

All the following verified figures are official standardized RO membrane performance data of TMG20-400, forming the core technical reference for system design:

• Full Model: TMG20-400 Standard Rejection RO Membrane

• Structural Type: Standard 8040 spiral wound RO membrane

• Effective Membrane Area: 400 sq. ft

• Stable Permeate Flux: 9,800 – 11,200 GPD under standard test conditions

• Stabilized Salt Rejection Index: 99.2% ~ 99.5%

• Standard Operating Pressure: 120 – 160 psi

• Maximum Tolerable Pressure: 600 psi

• Continuous Operating Temperature Range: 5 – 45°C

• Permissible Working pH: 2.0 – 11.0 for long-term operation; 1.0 – 13.0 for chemical cleaning

• Maximum Allowable Feed SDI: 5

• Single Element Pressure Drop Index: ≤15 psig

• Core Performance Features: Constant daily flux output, non-declining stable salt rejection, moderate fouling tendency

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Product Advantages

1. Highly consistent stable flux recorded in full performance data

   All batches of TMG20-400 pass unified flux testing, with narrow numerical fluctuation range in RO membrane performance data. Under continuous 24-hour operation, daily water yield will not drop sharply, avoiding unstable water supply troubles for commercial water vending equipment and centralized water systems.

2. Long-term stable salt rejection technical index

   As a qualified standard rejection brackish water RO membrane, its desalination rate maintains steady 99.2%–99.5% throughout the whole service cycle. Even after months of continuous operation, the salt rejection index has no obvious attenuation, ensuring consistent drinking water quality for end users.

3. Balanced anti-fouling performance to stabilize long-term running data

   The smooth hydrophilic membrane surface reduces organic adhesion, effectively slowing down flux decline caused by fouling. Operators can keep stable RO membrane performance data for a longer period between two chemical cleaning cycles and cut daily maintenance labor.

4. Universal 8040 size with high compatibility

   This mainstream RO membrane element fits all common fiberglass and stainless steel pressure vessels. Engineering teams can quickly finish membrane replacement without redesigning supporting facilities, and the original system’s pressure and flux indexes can remain stable after replacement.

5. Wide pH adaptability to restore performance indexes easily

   Strong acid and alkaline cleaning agents are applicable to eliminate inorganic scale and organic dirt. After regular maintenance, flux and salt rejection technical indexes can be fully restored, effectively extending overall RO membrane lifespan.

Application Fields

The TMG20-400 membrane with reliable and stable RO membrane performance data is widely deployed in various commercial and municipal water treatment scenarios. It acts as the core filter element for community automatic water vending machines, delivering steady daily water yield and consistent desalination index to meet residents’ daily drinking needs. For hotels, schools and office buildings equipped with centralized pure water supply equipment, its non-fluctuating flux and salt rejection data reduce frequent parameter adjustment work for management staff. It is also suitable for small bakeries, coffee shops and beverage workshops to produce qualified auxiliary purified water with stable water quality indicators. In suburban shallow groundwater purification and small municipal tap water deep treatment projects, this universal brackish water element maintains balanced performance even when raw water mineral content fluctuates moderately, and its complete set of technical performance data provides clear parameter reference for engineering design and equipment matching.

Quality Standards

Every batch of TMG20-400 elements undergoes strict offline testing to record complete RO membrane performance data, including flux, salt rejection, pressure resistance and temperature adaptability. The whole production line follows ISO 9001 quality management system. All contact raw materials comply with FDA food contact standards, and finished products pass NSF drinking water safety certification. Complete test datasheets with full performance indexes, material traceability records and factory inspection certificates are provided for project filing and customer factory audits. Finished membranes are vacuum-sealed with protective liquid to prevent dry film damage and surface pollution during transportation, so the original performance technical indexes will not be affected after installation.

Future Prospects

With the booming demand for small and medium-sized commercial drinking water treatment, more engineering purchasers prioritize membrane elements with complete, stable RO membrane performance data. Ultra-high rejection or ultra-low pressure specialty membranes come with higher system matching costs, while the TMG20-400 standard rejection element balances running stability and procurement cost. Our R&D team will keep optimizing the polyamide membrane formula to further narrow the fluctuation range of flux and salt rejection technical indexes, and extend the effective service cycle of stable performance data. The long service life and low maintenance cost also make this product fit global low-carbon operation trends, and it will gain wider application in new commercial water station construction and old equipment renovation projects.

Summary

TMG20-400 RO Membrane with complete standardized RO membrane performance data is a balanced universal brackish water RO membrane focusing on stable flux and long-lasting salt rejection technical indexes. Through mature spiral wound structure and balanced hydrophilic separation layer design, it avoids severe parameter fluctuation caused by raw water and long-time operation.

Compared with special high-performance membrane products with high matching thresholds, this standard rejection reverse osmosis membrane provides stable, predictable running data at lower overall project cost, becoming the preferred selection for most conventional commercial tap water and underground brackish water treatment projects. For water treatment engineers and station operators who require clear, stable technical performance indexes for daily operation, TMG20-400 delivers reliable long-term water purification value.

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