When To Consider An Alternative To Thermal Dispersion Meters

Maintaining a firm grip on blower output within digesters at wastewater treatment plants is the key to stable dissolved oxygen (DO) levels that support an optimal biological cycle. By monitoring air flow at critical points, with a flow meter placed at each aeration section, an operator can detect a blockage or equipment issue often before the DO level falls noticeably. However, the most common type of device used to measure aeration in the activated sludge process — thermal dispersion flow meters — is not always the best fit.