What does alkalinity measure?

Alkalinity measures the buffering capacity of water, which refers to its ability to resist changes in pH when acids or bases are added. This is indicative of the presence of bicarbonates, carbonates, and hydroxides in the water, which can neutralize acids and maintain a stable pH. High alkalinity means that the water can absorb more acid without a significant drop in pH, making it crucial for maintaining water quality in various aquatic environments and wastewater treatment processes.

Understanding alkalinity is essential for managing biological processes in wastewater treatment, as imbalances in pH can affect microbial activity and the overall efficiency of treatment systems. This capacity to buffer against acidity is vital not just in wastewater treatment but also in natural water bodies, agriculture, and industrial processes.