Downtime is not an option for this chemical giant at the port of Ghent. This means that a reliable backup installation is the rule rather than the exception, as it also is for the production of the boiler water.
Two reverse osmosis units have been installed as a backup that each can supply demineralised water at a rate of 50 m³/hr with a conductivity of less than 10 µS/cm. These are used if the main installation cannot achieve the necessary production flow rate or if the existing system does not supply the proper quality. In the first case, the backup starts supplying demineralised water from mains water. In the second case, the water flows from the main installation through the backup via a second filter to achieve the desired quality.
The PLC program is also equipped to automatically dose an additive solution so that the client is assured that the 120 reverse osmosis membranes will perform properly at all times.