Fine screening is required to remove fine sized floating waste coming with the flow in to a treatment Plant.
Ex. Plastic pouches, fibrous vegetable waste, shredded and torn cloths, grass & various material, that passes through the coarse screen.
The objective is to remove all the fine inorganic floating waste from the flow so that equipments on the downstream of the screen function efficiently. Fine screens are installed in the intake of the treatment plant.
Isolation gates/stop logs are installed before and after the screen for the maintenance purpose.
Fine Screen equipments that are commonly employed are:
Rotary drum screen (Requires ample of wash water with high pressure)