During normal operation over a period of time, RO membrane elements are subject to fouling by suspended or sparingly soluble materials that may be present in the feedwater. Foulant removal is achieved by cleaning and flushing or by changing the operating conditions.
As a general guide, foulant removal is required when any of the following conditions occur:
ZI-CHEM® Reverse Osmosis maintenance technologies include a broad range of chemistries that are supported by cleaning and monitoring procedures. These are designed to maximize the performance of ion exchange membranes and avoid costly premature replacement of spent membranes.
These programs can address foulants caused by a wide range of sources including: