How to Optimize Sodium Acetate Dosage in Low-temperature Winter Period

As water temperature drops, denitrifying bacteria activity decreases significantly and the nitrogen removal rate declines. To ensure TN compliance during winter low-temperature periods, it is usually necessary to appropriately increase sodium acetate carbon source dosage and optimize dosing points (such as multi-point dosing to anoxic zones) to improve carbon source utilization.

It is recommended to dynamically calculate dosage based on daily influent and effluent TN, flow rate and water temperature data, avoiding excessive dosing that may cause effluent COD rise or chemical waste. A winter dosing model suitable for the plant can be established through bench-scale tests or historical operating curves.

Henan Fannuo provides liquid sodium acetate and can assist in establishing carbon source dosing curves and winter operation recommendations based on customer water quality and operating conditions to ensure stable denitrification during low-temperature periods.