What is the BEST treatment strategy to address decreasing pH values in a Nitrification plant?

Increasing alkalinity is the best treatment strategy to address decreasing pH values in a nitrification plant. Nitrification, the biological oxidation of ammonia into nitrite and then into nitrate, relies on specific pH levels for optimal bacterial activity. If the pH drops too low, it can inhibit the growth and function of the bacteria involved in this process.

When nitrification occurs, it can produce acids which may lead to a decrease in pH. By increasing alkalinity, you add buffering capacity to the wastewater, which helps to stabilize and maintain pH levels within the suitable range for nitrifying bacteria to thrive. Adequate alkalinity ensures that the system can handle fluctuations in pH that may arise during the nitrification process.

In contrast, focusing on other strategies, such as decreasing organic load or increasing aeration, may not directly address the issue of pH reduction. While stopping waste might seem beneficial, it could disrupt the overall balance and functioning of the treatment process as well. Thus, increasing alkalinity directly targets the problem of low pH, making it the most effective strategy for maintaining optimal conditions for nitrification.