Ultra-low pressure membrane element
"SURO ULP-8040/4040" and "SURO ULP-8040HR/4040HR (high rejection)"
· Introduction
The membrane element is made of polyamide composite membrane of ultra-low pressure special type developed and produced by ourselves. It is suitable for desalting of raw water with salt concentration less than 3000 mg/L. This type product has the characteristics of high rejection, low operating pressure and large membrane flux, and can be widely used in the desalination water treatment projects with municipal tap water and groundwater as raw water, such as direct drinking water, production water of food and beverage enterprises.
· Product specification
| Model | Effective membrane area ft2(m2) | Flux GPD (m3/d) | Stabilize Rejection (%) | Minimum Rejection (%) |
| SURO ULP-8040 | 400(37.2) | 12000(45.4) | 99.2 | 99.0 |
| SURO ULP-4040 | 85(7.9) | 2600(9.8) | 99.2 | 99.0 |
| SURO ULP-8040HR | 400(37.2) | 10500(39.7) | 99.4 | 99.2 |
| SURO ULP-4040HR | 85(7.9) | 2400(9.1) | 99.4 | 99.2 |
· Test conditions
| Test liquid | Water temperature(℃) | pH | Operating pressurepsi(MPa) | Recovery rate (%) |
| NaCl solution (1500 ppm) | 25±2 | 7.5-8.0 | 150(1.03) | 15±1 |
Notes:The permeate flow of single membrane element may vary with in±15%.
· Limit operating parameter
| Maximum operating pressure | 600psi(4.14MPa) |
| Maximum inlet temperature | 45℃ |
| Maximum inflow rate | 17.0m3/h(8040)、3.6m3/h(4040) |
| Maximum inflowSDI15 | 5.0 |
| Maximum residual chlorine concentration | 0.1mg/L |
| pH range of inlet water in continuous operation | 2-11 |
| PH range of inlet water during chemical cleaning | 1-13 |
| Maximum transmembrane pressure difference for single membrane element | 15psi(0.1MPa) |