What is the primary issue caused by Struvite in wastewater treatment systems?

Struvite, which is a mineral composed of magnesium ammonium phosphate, can precipitate in wastewater treatment systems, leading to significant operational challenges. The primary issue it causes is clogging pipes and valves. As struvite crystals form and accumulate, they create blockages in various components of the treatment system, such as pipes, pumps, and valves. This can inhibit flow, reduce system efficiency, and lead to costly maintenance and repairs.

The formation of struvite is often a result of elevated concentrations of magnesium, ammonium, and phosphate in the wastewater. When conditions are conducive, such as changes in pH or temperature, struvite begins to precipitate. Regular maintenance and monitoring are necessary to manage this issue, as it can disrupt the treatment process and reduce the overall effectiveness of the system.

In contrast to this, the other options do not directly relate to the primary concern regarding struvite. Although struvite can affect various aspects of the treatment process, the most immediate and pressing problem that operators face is the mechanical clogging caused by its accumulation.