Membrane plants - plant technology
In many water technology applications, a high level of purity of the water used is required. Cooling and steam circuits are classic recipients of low-salt make-up water. Chemical, pharmaceutical and food technology production processes often depend on water with low conductivity. In water analysis, dissolved salts in the water influence and falsify the measurement results. It is often not only the hardeners calcium and magnesium that have to be removed from the feed stream, but also other dissolved ions. The amount of dissolved ions in aqueous solutions must be reduced to a minimum.
An economical and robust method for producing low-salt water is the membrane method based on the principle of reverse osmosis. Reverse osmosis systems always consist of two main components: a centrifugal pump to increase the inlet water pressure and wound membrane modules stored in pressure pipes. The membrane modules consist of a dense membrane, which is permeable to water and at the same time almost completely retains dissolved substances in the water. The inlet water is conveyed by the pump at high pressure across the membrane surface. Salts dissolved in the water are then almost completely held back by the membrane and the desalinated permeate is produced. The saline concentrate remains in front of the membrane.
GB Chembridge International offers a wide range of standard systems. Our systems can be expanded and adapted to your needs using a modular principle. In addition, after evaluating a water analysis, we can design an individual, tailor-made system for each of your applications. If the use of an upstream ultrafiltration system or a downstream electrodeionization system is required, we will be happy to advise you and put together the right water treatment system for you.
Standard systems consist of the following components as standard:
- A stainless steel base frame to accommodate all system components
- High-pressure pump as a multi-stage centrifugal pump
- An electronic, programmable controller with touch display and visualization of the process
- Measuring and control components for monitoring and controlling the system
- A pre-filter to protect the membrane modules from coarse contamination
- High-quality membrane modules, resistant to fouling
- All standard systems have the following operating parameters:
a. Recovery: 75-80%
b. Desalination rate: 99%
What we offer:
- Robust system technology for all applications
- Two different filter materials for high flexibility
- Professional expert advice
- Special versions on customer request
- System support by our trained service technicians
Reverse osmosis systems
Plants with a permeate output of up to 1200 l/h are designed as compact stand-alone plants with vertically mounted pressure pipes. From a permeate capacity of 2000 l/h, the pressure pipes of the reverse osmosis systems are installed horizontally.
All reverse osmosis systems are designed for a total salt content of 1000 mg/l TDS.
The performance data of the reverse osmosis systems are guide values and can vary depending on the system equipment and mode of operation.
| Permeate output [l/h] | Operating pressure [bar] | Connected load [kW] | Block dimensions HxWxD [mm] | |
|---|---|---|---|---|
|
RO 300 |
300 |
12.0 |
0.55 |
1260x470x420 |
|
RO 600 |
600 |
14.0 |
1.50 |
1800x610x810 |
|
RO 1200 |
1200 |
14.0 |
2.20 |
1800x610x810 |
|
RO 2000 |
2000 |
14.0 |
3.00 |
1840x610x810 |
|
RO 4000 |
4000 |
12.0 |
5.50 |
1800x2900x800 |
|
RO 6000 |
6000 |
12.0 |
5.50 |
1830x3880x800 |
|
RO 8000 |
8000 |
12.0 |
7.50 |
1830x4890x800 |
|
RO 12000 |
12000 |
11.5 |
11.00 |
1870x4940x850 |
|
RO 20000 |
20000 |
11.5 |
15.00 |
2240x5000x850 |
|
RO 30000 |
30000 |
12.0 |
22.00 |
2370x6080x1000 |
Sensor technology & measurement parameters
| Conductivity monitoring for each pressure pipe | Inductive conductivity monitoring of the permeate for each pressure pipe for detailed control of the membrane performance |
Expansion modules
| Permeate sampling taps | Sampling cocks for permeate sampling to monitor the membrane performance for each pressure pipe |
| Manual concentrate return | Manually adjustable recirculation of a partial volume flow of the concentrate upstream of the centrifugal pump to increase yield and overflow speed |
| Automated concentrate return | Automated recirculation of a partial volume flow of the concentrate in front of the centrifugal pump to increase the yield and the overflow speed |
| Permeate recirculation | Discarding of the initial permeate and return before the centrifugal pump to improve the permeate quality |
| Frequency converter | Control of the inflow volume flow via a frequency converter on the centrifugal pump for variable permeate performance and energy savings |
| Antiscalant dosage | Dosing pump for dosing an antiscalant to minimize deposits on the membranes and increase membrane life |
| Cleaning connections | Cleaning connections for cleaning the membrane elements when installed (CIP - cleaning in place) |
| pH adjustment | Adjusting the pH value to optimize the permeate quality |
| Stainless steel version | Design of the pipelines and pressure pipes in stainless steel for high hygienic requirements |
| Permeate tank | Storage tank for intermediate storage of the permeate, optionally with additional filters to protect the permeate from atmospheric influences |
| Booster station | Booster pumps for supplying the water network with permeate from a permeate tank |
Communication Interfaces
The reverse osmosis systems can transmit measurement data to higher-level systems or be controlled by them using all common communication protocols. The following interfaces are available as expansion modules.
| Modbus (TCP/RTU) | Profibus | Profinet | bacNET Gateway | FTP | SMTP (email) |
| Remote maintenance | Notification of fault messages via SMS |
| Cloud service | Transmission of all measurement data to a cloud server for online evaluation and visualization of all relevant parameters |
