TMG Series Standard Balanced High Rejection Brackish Water RO Membrane

TMG series balanced brackish RO membrane delivers stable 99.5% nominal salt rejection with balanced flux, fouling resistance and operation cost. It is the universal replacement choice for conventional BW series elements, perfectly suited for regular well water, municipal tap water and light industrial reclaimed water without special oxidant or ultra-high salinity feed water.

This section highlights industry pain points and demonstrates the core value of TMG series.

Overseas buyers face two major dilemmas when selecting RO membranes:

• Low-pressure membranes deliver high water flux but unstable salt rejection. They are prone to scaling under hard water conditions and require frequent chemical cleaning in the long run.

Heavy fouling-resistant or chlorine-modified membranes come with a significant price premium. Their enhanced features are redundant for standard clean water applications and raise overall procurement expenses.

Solution logic of TMG series:

Adopting balanced modified aromatic polyamide membrane sheets without biased single performance. It features stable salt rejection, moderate permeate flow and qualified basic anti-fouling performance at a moderate purchase price. With no functional weaknesses for standard brackish water projects, TMG serves as the optimal universal membrane for cost-balanced water treatment projects.

Technical Characteristics

Two complete sizes (4040 & 8040) aligned with universal industrial standards

• Salt rejection index: Nominal salt rejection ≥99.5%, guaranteed minimum salt rejection ≥99.3% (high standard in the industry to ensure qualified pure water output)

Size Specifications

TMG-4040: 4-inch × 40-inch, effective membrane area 78 sq.ft, standard permeate flow 2400 GPD

TMG-8040: 8-inch × 40-inch, effective membrane area 400 sq.ft, standard permeate flow 9800 GPD

Operating Compatibility

Max operating pressure: 4.1MPa; Operating temperature range: 5℃–45℃

Continuous operating pH: 2.0–11.0; Chemical cleaning pH: 1.0–13.0

Feed Water Requirements

Max feed SDI ≤5.0; Max residual chlorine ≤0.1mg/L

(Standard parameter for tap water & well water; Not recommended for feed water with high residual chlorine, HSRO series is recommended instead)

Flow Channel Design

34mil standard biostatic feed spacer, effectively mitigating concentration polarization for standard water quality.

Core Product Advantages

All advantages are converted into tangible engineering benefits for buyers for straightforward understanding

• Balanced four core performances with no drawbacks

It avoids the common trade-off between high flux & poor rejection or high rejection & low flux. Consistent water quality throughout long-term operation cuts extra costs caused by repeated system debugging due to unstable water parameters.

• Universal direct replacement with zero renovation cost

Dimensions are fully compatible with the entire BW30 series. It can be installed into existing equipment without modifying pressure vessels or pipelines, greatly shortening project renovation cycles.

• Moderate overall operation and maintenance cost

Its reliable basic anti-fouling property extends chemical cleaning intervals to 6–8 months under standard feed water, reducing recurring purchases of cleaning chemicals. Meanwhile, its unit price is lower than specially modified premium membranes to lower upfront capital investment.

• Wide chemical cleaning tolerance window

Alternating acid & alkali circulation cleaning can quickly restore membrane flux with simple operation, easy for on-site maintenance technicians overseas to master.

• Stable mass supply capacity

Mass-produced in our 100,000 ㎡ workshop with full individual inspection for every element. Consistent performance across batches for cross-border bulk orders, ideal for long-term stock-up by distributors.

Wide Application Fields

General mainstream overseas scenarios, differentiated from special-purpose membrane lines

• Advanced purification of municipal urban & rural tap water

Produce domestic purified water and centralized residential water supply for regular tap water without excessive residual chlorine

• Desalination of inland underground brackish well water

Safe drinking water projects for villages and towns treating brackish well water with TDS ranging from 3000 ppm to 10000 ppm

• Pre-desalination for small & medium industrial pure water

Primary brackish water treatment for electronic component washing, food production and boiler makeup water

• Light industrial reclaimed water recycling

Recovery of wastewater from chemical and light industry with low organic content and no oxidants

• Commercial water purification equipment
  

Matching membrane for integrated pure water machines in hotels, office buildings and schools

• Small skid-mounted standard pure water units

Standard complete water treatment systems without special complicated water quality conditions

FAQ

Q1: What's the core advantage of TMG series compared with BW30 RO membrane?

A1: TMG balances salt rejection, flux and anti-fouling performance better, with smaller flux attenuation in long-term operation, suitable for most conventional brackish water projects without extra premium cost.

Q2: Is TMG membrane fit for feed water with residual chlorine over 0.1ppm?

A2: Not recommended. If raw water contains continuous oxidants, HSRO chlorine resistant series is a better choice.

Q3: Can TMG-4040 directly replace BW30-4040?

A3: Yes, same standard dimension, compatible with all mainstream 4040 pressure vessels.

Q4: What is the service life of TMG brackish membrane under standard pretreatment?

A4: 3–5 years with qualified SDI ≤5 and regular chemical cleaning every 6–8 months.

Q5: What TDS range is TMG series applicable to?

A5: TDS ≤10000ppm standard brackish water, not for seawater over 32000ppm TDS (choose TSE/SWC seawater series instead).

Other related product links:

ESPA2-4040

TML20-400

TM8 Series