Description
- Proper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved.
- Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.
| Operating and Cleaning Limits | |
|---|---|
| Membrane Type | Polyamide Thin-Film Composite |
| Maximum Operating Temperature | 113°F (45°C) |
| Maximum Operating Pressure | 600 psig (41 bar) |
| Maximum Element Pressure Drop | 15 psig (1.0 bar) |
| pH Range Continuous Operation Short-Term Cleaning (30 min) |
2 – 11 1 – 13 |
Maximum Feed Silt Density Index (SDI | SDI 5 |
| Free Chlorine Tolerance | < 0.1 ppm |
