HR-4040 High rejection reverse osmosis membrane element Ecosoft

Specifications
Throughput flow rate* – 11.2 m³/day
Minimum salt rejection** – 99.0%
Stabilized salt rejection** – 99.3%
Nominal active area – 9.3 m²
Feed liner thickness – 28 mm
Working water temperature – 45°C
Maximum operating pressure – 41.0 bar
Maximum pressure drop – 1.0 bar
pH range, operating mode – 3–10
pH range, dry cleaning mode – 2–12
Maximum feed flow – 3.6 m³/h
Maximum feed sludge density index – SDI 5
Free chlorine tolerance – <0.1 ppb./min.

* The throughput for a single element may vary by ±15% from the specified value.
** Permeate flux and salt rejection are based on standard test conditions: 1500 mg/L NaCl, 25 °C, 15% permeate yield and 10.3 bar applied pressure.

Product specifications may be slightly changed due to product improvements.

Source water requirements
Specification
Operating water temperature – 45°C
pH range, operating mode – 3-10
pH range, dry cleaning mode – 2-12
Maximum feed sludge density index – SDI 5
Free chlorine tolerance – <0.1 ppb.

Before start-up, ensure that the membrane is properly prepared for operation. Check membrane pretreatment, membrane element installation, instrument calibration and general system condition.

Avoid large pressure surges and flow fluctuations inside the spiral elements during start-up, shut-down, cleaning and other maintenance procedures, as they can damage the membrane.

During start-up, it is recommended to gradually switch the system from idle to operating mode by performing the following steps:

Gradually increase the feed water pressure over 30-60 seconds,
Gradually put the system into operating flow over 15-20 seconds,
The permeate produced during the first hour of operation must be drained.

After the initial wetting, keep the membrane wet.
To prevent biological contamination during prolonged shutdown, store the membrane elements in a preservative solution. The pressure drop across the entire length of the housing must not exceed 3.4 bar.