Water Treatment
Reverse osmosis system
Reverse osmosis systems reduce the salts and minerals dissolved in the water and thereby lower the conductivity of the feedwater. The water is forced through a semi-permeable membrane under pressure. Water molecules can pass through the membrane, while many dissolved substances are retained and discharged.
For steam generators, a reverse osmosis system is particularly useful where a higher feedwater quality is required, where a large number of operating hours is reached, or where blowdown and desalination losses are to be reduced. A reverse osmosis system is also required for the generation of clean steam.
Reverse osmosis is usually combined with an upstream softening system in order to protect the membrane.
We offer reverse osmosis systems as a separate unit or in combination with a softening system – sized to suit the raw water quality, the water demand and the operating mode of the steam plant.
Model
3 variants
- Permeate output, max.
- 100 l/h
- Recovery rate, max.
- 75 %
- Height
- 1400 mm
Available for purchase only
Operation & maintenance
Maintenance & service
- Checking the conductivity of the permeate
- Checking the system's pressure, flow and recovery rate
- Checking and, if necessary, replacing the pre-filters
- Checking the membrane performance
- Cleaning or replacing the membranes if performance declines
- Checking valves, hoses, connections and leak-tightness
- Regular flushing of the system in accordance with the manufacturer's instructions
- Compliance with the specified maintenance intervals
Technical data
Technical data
| Specification | UO-LC 50-100 | UOB 100-250 | UOB 300-500 |
|---|---|---|---|
| Permeate output, max.(l/h) | 100 | 250 | 500 |
| Recovery rate, max.(%) | 75 | 75 | 75 |
| Storage tank(l) | – | 600 | 1000 |
| Height(mm) | 1400 | 1650 | 1650 |
| Width(mm) | 640 | 1200 | 1200 |
| Depth(mm) | 355 | 800 | 1000 |
| Weight(kg) | 40 | 120 | 140 |
Frequently asked questions
Why is water treatment needed for the steam generator?
Untreated water leads to limescale and corrosion in the boiler. The limescale is deposited on the heating elements in particular and prevents heat transfer — with the result that the heating elements fail completely, often accompanied by leaks caused by the heating elements bursting.
Where can you obtain the values for the local mains water?
You will usually receive the water analysis of your mains water from your supplier on request (often already on their website). For an initial indication, search the internet for “water analysis + name of your location”.
How does a reverse osmosis system work?
A reverse osmosis system removes dissolved salts, minerals and other constituents from water. To do so, the water is forced through a special membrane under pressure. The result is high-quality permeate with a considerably reduced conductivity and low residual mineralisation.
Which water quality is achieved?
The systems achieve a desalination rate of at least 97 %. This considerably reduces the conductivity of the permeate produced, typically lowering it to values below 100 µS/cm.
Does the system require pre-treatment of the water?
Yes. The systems are designed for operation with softened drinking water. A softening system protects the membranes against limescale deposits and increases operational reliability as well as the service life of the system.
Can the system be operated fully automatically?
Yes. The integrated microprocessor control monitors and controls operation automatically. Permeate conductivity, fill levels and operating states are monitored continuously.
How often do the membranes have to be replaced?
The service life of the membranes depends on the raw water quality, the pre-treatment and the operating conditions. When operated properly, membranes frequently achieve service lives of several years.
Non-binding consultation on Reverse osmosis system
Our specialists in Bremen configure the system to match your requirements and advise you on the accessories you need.