Product Advantages: RO filter membrane Element for Low-TDS Brackish Water feature high water flux and excellent salt rejection, offering low operating costs and outstanding economic efficiency. For membrane type, it is spiral wound ro filter membrane. For cost, both 8040 ro filter membrane (8 inch ro filter membrane) and 40 40 ro filter membrane price (40 inch ro filter membrane) are competitive to the big brands.
Maintenance and Preservation
When you use membrane ro water filter, during short-term shutdowns, the system should be flushed every five days. After flushing, close all valves properly.
For long-term shutdowns (over 30 days), add a 1% sodium bisulfite solution to the system to prevent bacterial growth.
After a period of normal operation, the ultra-low pressure ro filter membrane may become fouled by suspended solids or sparingly soluble substances present in the feed water. When system performance decreases by 10% under standard conditions, or obvious scaling or fouling occurs, timely cleaning is required.
Regular water flushing and chemical cleaning can restore the performance of the ro filter membrane and extend its service life.
Operating Conditions Specifications:
- Maximum operating pressure is 41 bar (600 psi), pH range extends from 1 to 13.
- Maximum operating temperature is 45°C (113°F), and maximum feed water SDI (SDI15) is 5.0.
- The maximum pressure drop per membrane element is 1.0 bar (15 psi), and the allowable free chlorine content is less than 0.1 ppm.
- The continuous operating pH range is from 2 to 11.
APPLICATION
In the context of rising energy costs and increasingly strict low-carbon environmental requirements worldwide, the “ultra-low pressure”operation of this ro filter membrane Element for Low-TDS Brackish Water (<1000 ppm) means significant operational cost savings over the entire lifecycle and a substantial reduction in the system’s carbon footprint. The ultra-low pressure ro filter membrane precisely meets the dual demands of the medium- to low-salinity water treatment market for extreme energy efficiency and optimal lifecycle cost.
It is ideal for applications such as:
- Community water supply
- Hotels
- Hospitals
- Food & beverage industry
This ro filter membrane efficiently purifies ordinary surface water or tap water into high-quality process water or drinking water. Its ultra-low pressure characteristic also provides unique advantages for distributed water supply systems and mobile water treatment units.
MODEL
| Type | Membrane Model | Active Area Ft(m3) | Flux gpd(m3/d) | Minimum Rejection | Stablized Rejection Rate(%) | Pressure psi(MPa) | Solution NaCL(ppm) | Recovery |
|---|---|---|---|---|---|---|---|---|
XLP |
XLP-4040-82 |
82(7.6) |
2,250(8.7) |
98 |
99.0 |
100(0.69) |
500 |
15 |
XLP |
XLP-8040-400 |
400(37) |
10,500(40) |
98 |
99.0 |
100(0.69) |
500 |
15 |
XLP |
XLP-8040-440 |
440(41) |
12,650(48) |
98 |
99.0 |
100(0.69) |
500 |
15 |
Test Conditions: 0.69 MPa (100 psi), 25°C (77°F), 500 ppm NaCl, pH = 8, Recovery rate: 15%
DETAILS
CHINA SUPPLIERS STATUS
- Breakthrough in Core Performance
Chinese extra low pressure ro filter membranes have reached performance levels close to leading international brands in terms of salt rejection and permeate flux. For example, under a 2000 ppm NaCl solution test, a domestic brand achieved a 99.7% salt rejection rate and a water flux exceeding 20 LMH/bar. Its operating pressure is 20% lower than that of similar international products, resulting in 18–23% energy savings. - Cost Advantage
The initial investment cost is 30–40% lower than imported brands, and operation & maintenance costs are reduced by 25–30%, achieving a lower total lifecycle cost compared with foreign ro filter membrane - Technological Development
Through material modification and process optimization, domestic manufacturers are steadily narrowing the gap with international brands. As of 2025, domestic ro filter membranes account for over 60% of applications in industrial wastewater treatment.
