What is the greatest operating challenge associated with PAC?

The greatest operating challenge associated with powdered activated carbon (PAC) is handling it. This is primarily due to the physical properties of PAC, which can make it difficult to manage during the treatment process. PAC is typically a fine powder, and when handling such materials, there are concerns related to dust generation. The fine particles can become airborne, leading to potential inhalation hazards and creating a messy work environment.

In addition to safety concerns, the handling of PAC requires specialized equipment to ensure accurate dosing and efficient mixing into water treatment systems. Proper handling techniques are essential to maintain effectiveness and minimize waste. Ensuring consistent feed rates and avoiding clumping in the process further complicates the operational challenges, making handling a crucial aspect of PAC use in water treatment operations.

Though other options present valid challenges, such as transporting, measuring effectiveness, and storing PAC, they do not pose as significant a day-to-day operational hurdle as effectively managing the handling of this material during treatment processes.