If the chlorine residual is falling, what action should be taken if ice is forming on the chlorine regulator?

When ice is forming on the chlorine regulator, it typically indicates that there is a drop in pressure or a restriction in flow. This ice formation can impair the performance of the chlorine feed system, leading to a decrease in chlorine residual in the wastewater treatment process.

Placing a second tank on line allows for redundancy, ensuring that there is no interruption in chlorine feed despite the issue with the first regulator. This action helps maintain a consistent chlorine residual, which is crucial for effective disinfection and preventing harmful pathogen levels. By having an additional tank, the system can continue to operate while assessing and addressing the malfunctioning regulator without compromising water treatment efficacy.

Increasing the chlorine dosage could potentially mask the problem rather than resolve it and may lead to over-chlorination, which can have adverse effects. Replacing the regulator immediately may not be feasible if the system is essential for continuous operation. Shutting down the chlorine feed system would pose a risk of inadequate disinfection and could lead to violations of health standards. Therefore, placing a second tank on line is the most effective immediate action in this scenario.