SDI (Sediment Density Index) analysis plays a crucial role in the proper functioning and efficiency of filtration systems, especially for Reverse Osmosis and Nanofiltration processes.
This analysis provides essential information on the quality of the feed water, helping to identify and monitor the presence of sediments that can negatively impact the performance of the equipment and the useful life of the membranes.

The SDI is a measure of the concentration of suspended particles in water, expressed as a ratio between the rate of water flow through a filter over a given period of time.
The higher the SDI value, the greater the amount of sediment present in the water.
A high SDI index can result in problems such as premature membrane clogging, reduced flow rate and increased operating pressure, leading to poor performance and the need for frequent maintenance.

By carrying out regular SDI analysis, it is possible to monitor the efficiency of the filtration system and take preventive action to ensure optimal operation.
Early identification of an increase in SDI allows corrective measures to be taken, such as properly cleaning filters, replacing worn membranes or optimizing water pre-treatment processes.