When resistance is put on a collector, the CFM delivery decreases. We have several tools to enable you to achieve this. A dust collector must be able to overcome the piping resistance and pull vacuum from the machines you need to operate simultaneously. I am not sure your typical plastic pipe system conveying dust can be adequately grounded. As we know, the reason for people attempting to ground plastic pipe is because of the generation of static electricity.
Static electricity develops when the dust particles constantly rub the plastic surface.
A substantial electrical accumulation may result, which then begins to discharge into fine dust particles. It is likely an explosion will occur at some time under this condition. Interior and exterior grounding has to be considered. If a grounding method was available for this situation, I am sure it would be quite extensive and expensive. Plastic pipe systems are not designed for dust collection use.