RO
Special membrane and element production process allows the element to withstand temperatures of up to 80°C. The unique housing design and removable encaps prevent the element from fouling and bacterial growth, making it the best choice for applications with hygienic design requirements. The elements are widely used in the recovery of hot condensate from evaporators, in the concentration of materials for the food and pharmaceutical industries and in the preparation of pure water for the pharmaceutical industry.
Product Parameters
| Element Model | Stabilized Salt Rejection | Permeate Flow Rate | Active Area | Feed Spacer Thickness | Feed Concentration | Feed Pressure | |||
| % | GPD | m³/d | ft² | m² | mil | mg/L | psi | MPa | |
| HS–400 | 98.5 | 9000 | 34 | 400 | 37.2 | 34 | 2000 | 150 | 1.03 |
| HS–4040 | 98.5 | 2100 | 7.9 | 90 | 8.4 | 28 | 2000 | 150 | 1.03 |
Permeate flow and salt rejection based on the following standard conditions: NaCl solution, 25°C, pH 7.5-8 and 15% recovery. Flow performance variation: ±20%
Heat Sanitization Protocol
New heat sanitizable RO elements must be pre-conditioned by exposure to hot water prior to initial use, to achieve optimal performance. Suitable quality water that is chlorine-free, and no scaling or fouling potential must be used during all pre-conditioning steps. RO permeate is preferred. An appropriate conditioning procedure is described below.
1. Flush to drain with suitable quality water for ~30 min at very low pressure (< 25 psi trans-membrane pressure) with maximum feed pressure of 45 psi.
2. Recirculate warm water through the elemental at very low pressure (< 25 psi trans-membrane pressure) with maximum feed pressure of 45 psi until the system warms up to no more than 45°C. Maximum pressure drop through a single element is 1.5 psi.
3. Introduce hot water to the system to increase temperature to 80 °C. Recommended ramp rate is 1–2 °C/min, and no more than 5 °C/min.
4. Keep trans-membrane pressure below 25 psi when warm or hot water (45 °C or higher) is being fed to the membranes.
5. Maintain temperature for 60 – 90 minutes.
6. Allow system to cool to 45 °C or below. Recommended down ramp rate is 1-2 °C /min, and no more than 5°C/min.
7. Flush to drain with suitable quality water for ~30 min at very low pressure (< 25 psi trans-membrane pressure) with maximum feed pressure of 45 psi.
Operating Instructions
| Maximum Operating Pressure | 600psi(4.14MPa) |
| Maximum Continuous Operating Temperature | 45°C |
| Maximum Heat-sanitizable Temperature (25 psi) | 85°C |
| Maximum Feed Flow | 17.0m³/h(8040), 3.6m³/h(4040) |
| Maximum Pressure Drop Per Element | 15psi(0.1MPa) |
| Short-Term Cleaning (30 min.) pH Range | 1–12 |
| Continuous Operation pH Range | 2–11.5 |
| Free Chlorine Tolerance | 0.1mg/L |
| Maximum Feed Silt Density Index (SDI₁₅) | 5.0 |
