CONSTANT EMISSION SYSTEMS
In an Air Pollution Control System, where the output parameter of the system remains unchanged even if there’s a change in the input parameter of the system, than it’s called as Constant Emission System.
But such during the course of action, it loses it longevity.
BAG FILTER :
Bag filters are air filtration mechanism consisting of a system of fabric bags through which gas (impure) stream is passed removing impurities (particulate matters).
[ Here the collected dust on the fabric gets separated from Bags / fabrics by the use of compress air. ]