A complete plant is a system which is used for preliminary treatment of wastewater. It performs operations of screening, grit removal. It may have an optional feature of grease removal also. Combining of several processes has its advantages. The area is minimized. Reduction in space implies less volume of air to be heated or exchanged.

A complete plant comprises of some sections. Polymerization section consists of batch stirred reactors. The reactors are installed with condensers. Stripping se...