What is the primary issue if a filter has a short filter run due to turbidity?

The primary issue of a short filter run due to turbidity is often linked to problems in the coagulation and flocculation processes. These processes are critical in treating water as they help in the agglomeration of fine particles, allowing them to be effectively removed during filtration. If there are issues such as inadequate coagulant dosage, improper mixing, or insufficient reaction time during flocculation, the resulting flocs may be weak or insufficiently bound, leading to high levels of turbidity in the water that enters the filter.

When water with elevated turbidity levels passes through the filter, it can clog the media more quickly, reducing the effective filtering time before backwashing or media replacement is necessary. This leads to a shorter filter run time than expected based on normal operating conditions. Proper coagulation and flocculation ensure that larger, more settleable particles are created, enhancing the efficiency of the filtration process and lengthening the filter run.

In contrast, inadequate air scour, poor backwashing technique, or filter media exhaustion may contribute to operational challenges, but they do not directly address the root cause of turbidity issues that impede the filtration process itself. Coagulation and flocculation issues are fundamental as they determine the characteristics of the water being filtered