Paddlewheel Flocculator
Fluctuation is one of the important parts in water and wastewater treatment processes.
Fluctuation is a process in which small particles collide with each other softly and create bigger ones. In water and wastewater treatment industry, the starting point is flash mixing that creates micro-Flocs. In fluctuation stage, macro Flocs are produced as a result of Brownian motion in which particles collide with each other. Macro particles can sediment. Modern fluctuation systems are classified into mechanical and hydraulic methods. Among mechanical methods are paddle wheel, turbine mixers, and jet pumps; aeration methods belong to hydraulic methods.
The following table briefly compares fluctuation methods.
Pictures of Mixer:
