30 - 50 % less electricity cost

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The reverse osmosis unit is used for the desalination of water with a salinity of up to 1,000 mg/l and is operated with dosing of antiscale instead of upstream softening. It is equipped with a high-quality centrifugal pump with variable-speed drive (VSD = FU). Frequency-controlled operation reduces electricity cost by 30 - 50 %, extends the lifespan of the unit and keeps permeate production constant irrespective of operation pressure. The RO digital microprocessor controller enables fully automatic operation with logging of all relevant operating data and freely adjustable limit values. The unit can be connected to the central control system via optional interfaces.

Benefits

• No additional salt load in wastewater
• Equipment with VSD (FU) saves 30 - 50 % electricity cost, maintains permeate production constant and enables a longer lifespan as well as particularly quiet operation
• Versatile RO digital controller with logging of operation data and many parametrisation options
• Optionally with PLC Siemens S7-1200
• Concentrate flushing device KSE and connection kit ARA for manual cleaning unit MRA already included

Applications

• Desalination of hardness-stabilised water
• Suitable for all industrial applications
• Suitable for reduction of electricity cost

Controller :

RO digital (PLC optional)

Desalination rate min.:

97 %

Permeate recovery:

75 – 80 %

Permeate back pressure max.:

0.3 bar

pH value operation:

6.5 – 9.5

pH value cleaning:

2 – 12

Ambient temperature:

5 – 40 °C

Conditions of use:

The unit may only be used for the desalination of hardness-stabilized feed water with drinking water quality or appropriately pre-treated well or surface water.

For unit sizes from 450 to 1650 l/h, it might be necessary dilute antiscale before use to ensure constant dosing and thus stable operation.

The unit is designed for a salinity (TDS) of 1,000 mg/l and a temperature of 15 °C. Under these conditions, the projected permeate output is achieved even after three years of operation. The permeate yield depends on the raw water quality and the pre-treatment. The following parameters must be maintained in the feed water:

Free chlorine:

not detectable

Iron (Fe):

< 0.2 mg/l

Manganese (Mn):

< 0.05 mg/l

Silica (SiO2):

< 25 mg/l

Silt density index (SDI):

< 3

Feed water temperature:

5 – 35 °C

Feed water pressure:

2 – 6 bar

Pressure fluctuation:

± 0.5 bar