AWWA WQTC71370

This outline of bulleted points presents a study on the application of the dynamic extinction measuring method (DEM) for coagulation monitoring, and an evaluation of DEM for floc characterization. The basics of DEM are outlined, along with method evaluation, and a determination of floc properties and observation of coagulation kinetics. The presentation summary indicates that: the method is adequate, dynamic analysis of polydisperse particle/floc systems, due to high resolution of time, coagulation kinetics can be investigated; no influence on floc properties due to shear forces by measuring equipment in contrast to classic particle counting; for low solid load/high transmittance of suspensions, optimization of hardware required; possible fields of application - dynamic optimization of floc properties regarding coagulation/sedimentation, coagulation/membrane filtration (membrane blocking), coagulation/filtration, and treatment of lime milk and flushing water. Includes 2 references, figures.