DuPont™ TapTec™ LC HF-4040 is a product that is specially developed for commercial segments, such as drinking water applications that require high flow rate. DuPont’s quality process enables the most consistent products in the industry that minimize the total cost of ownership of water treatment systems.
Tech Desc LC HF-4040
Technical data
- Operating pressure: 10.3 bar
- Permeate volume: 10.6 m³/day
- Stabilized salt rejection: 99.0 %
- Permeate consumption and salt (NaCl) rejection are indicated for the following test conditions: 1500 mg/L NaCl, 25°C.
Operating conditions
- Maximum operating water temperature: 35 °С
- Maximum operating pressure: 41 °С
- Maximum pressure drop: 1.0 bar
- pH range, operational mode: 3...10
- pH range, chemical cleaning mode: 2...12
- Maximum feed silt density index SDI: < 5
- Free chlorine tolerance: <0.1 mg/L
Maintenance
Before launch of the reverse osmosis system preliminary preparation of the membrane, refill of the elements, adjustment of the devices and other system checks should be performed.
Avoid any major pressure or flow surges inside the spiral-wound elements in the middle of launch, stop, cleaning etc. to avoid risk of damage infliction to the membrane. During the launch it is recommended to gradually switch the system from standstill to operational mode following the steps:
- gradually increase feed water pressure during 30-60 seconds
- operational rate of the flows should be developed gradually during 15-20 seconds
- permeate obtained within the first hour of operation is discharged
Important information
- After the initial soaking always keep the elements wet.
- To prevent biofouling during long operation breaks it is recommended to submerge the membrane elements into preservative solutions.
- Maximum pressure drop along the full length of the housing makes 3.4 bar.
