Toray RO Membrane 8040 - Model - TMG20D 400 - Brackish Water

Toray 8040 Membrane is Reverse osmosis (RO) membrane used in the water purification process, these are semi-permeable membranes that separate ions, unwanted molecules, and larger particles from processed water. Permeate water is forced through these membranes with the use of pressure built-in with the help of a pumping system.

8040 Membrane Technical Specifications:- 

TM720-400

Type - Cross-Linked Fully Aromatic Polyamide Composite

Model - TM720-400

Diameter  Inch - 8”

Membrane Area  - 400(37) ft2(m2)

Salt Rejection - 99.7%

Product Flow Rate - 10,200 (38.6) gpd (m3/d)

Membrane Type - Cross-Linked Fully Aromatic Polyamide Composite

Test Conditions:-

Feed Water Pressure - 225 psi(1.55MPa)

Feed Water Temperature - 77°F(25℃)

Feed Water Concentration - 2,000 mg/l Nacl

Recovery Rate - 15%

Feed Water pH - 7

Minimum Salt Rejection - 99.0%

Operating Limits:-

Maximum Operating Pressure - 600psi (4.1 MPa)

Maximum Feed Water Temperature  - 113ËšF (45 ËšC)

Feed Water pH Range, Continuous Operation - 2-11

Feed Water pH Range, Chemical Cleaning - 1-12

Maximum Pressure Drop per Element - 20psi (0.14 MPa)

Maximum Pressure Drop per Vessel - 60psi (0.4 MPa)

This Industrial 8040 RO Membrane is designed for large flows and high quality permeate water, being a critical component in the Industrial RO systems these are designed for long life and efficiency and manufactured from spiral wound sheets of semi-permeable material cross-linked polyamide composite membranes are manufactured as per ISO-9001 certification system.

8” membranes can be easily used in multiple membrane systems for treating municipal & industrial water, process water, as well as commercial applications. 

Application areas:-

TM720D-400 membranes are ideal for the flow capacity of 1000 LPH RO Plant, these are also used in other water applications like Municipal Water Treatment, DM Plants, etc. Due to its high efficiency and economical pricing, Torray 8040 membranes are used in Industries like

• Pharma
• Ink & dyes
• Hospitality 
• Food Industry as well
• Water treatment plants

• Flow Rate Capacity - 1000 LPH

• Permeate from the first hour of operation shall be discarded 

• The customer shall be fully responsible for the effects of chemicals that are incompatible with the elements. Their use will void the element of the Limited Warranty.

• Product Warranty 1 Year against Manufacturing Defects Only

All elements of TM720D-400  are wet tested, treated with a 1% by weight percent sodium bisulfite storage solution, and then vacuum packed in oxygen barrier bags, or treated with a tested feed water solution, and then vacuum packed in oxygen barrier bags with deoxidant inside. To prevent biological growth during short-term storage, shipment, or system shutdown, it is recommended that Toray elements be immersed in a protective solution containing 500 - 1,000 ppm of sodium bisulfate (food grade) dissolved in permeate.

1. What is the Toray TMG20D-400 membrane used for?
It's a low-pressure brackish water RO membrane designed for municipal, industrial, and commercial water treatment, suited to feed water with moderate salinity (2,000–10,000 ppm).

2. What is the flow rate and salt rejection of the TMG20D-400?
12,100 GPD (45.8 m³/d) nominal product flow rate, with 99.7% nominal salt rejection and a minimum guaranteed rejection of 99.5%.

3. What size is this membrane?
Standard 8040 format, with 400 sq. ft (37 m²) of active membrane area.

4. What is this membrane made of?
Cross-linked, fully aromatic polyamide composite — Toray's standard high-rejection membrane material.

5. What are the operating limits for this membrane?
Maximum operating pressure of 600 psi (4.1 MPa), maximum feed water temperature of 113°F (45°C), and a continuous-operation pH range of 2–11 (extending to 1–13 for chemical cleaning).

6. What feed water quality does this membrane require?
Maximum feed Silt Density Index (SDI) of 5, and chlorine concentration below 0.1 ppm — proper pre-treatment protects the membrane from fouling.

7. What's the maximum pressure drop this membrane can handle?
15 psi per element, and 50 psi per pressure vessel.

8. Is this different from the Toray TM720D-400?
Yes — although both are 8040-format, 400 sq. ft membranes with similar rejection rates, the TMG20D-400 has a higher rated flow (12,100 GPD vs 10,200 GPD) and different pressure-drop tolerances. They are not interchangeable specifications, even though they look similar on paper.