Using tracer method the residence time distributions of apparatus for waste water treatment stations are determinated.
Were investigated the equalization-clarifier tanks, biological chambers and final settling tanks.
Measured flow patterns of fluid and sediment and present actual values of process parameters enable to optimize the devices construction and optimize the technological parameters of theirs work (flow rate, location of charge and discharge places etc).
Radiotracer investigations are carried on parallely with conventional measures of COD, sediment bathymetry etc that enables formulate the general conclusions concerning the efficiency of investigated devices and technological processes.