When one opened up in this town, I watched my 2 kids' school grades go down one grade each. SUGAR.

Whatever you think has an effect.

Here is another example.

A 2014 study published in the Journal of Public Health found that people whose spouses had just died had a 66% increased chance of dying within the first three months following their spouse's death. 2 Prior studies had placed the increased chances of death for the surviving spouse even higher, at up to 90%.

Yea, that would work.

I have always worked on large continuous air flow systems and multiple filters are even more expensive than single filters for my applications. Hence I shy away from them.

I've seen that used in filtering deep-fat fryers. A binding agent is added to the oil that clumps the small particles together. A larger mesh filter can then be used to get most of the small particle contamination.

And because the process we are talking about is NOT continuous but a short process, that would be a good solution.

Would you like some fries with that?

A water curtain wouldn't clog up but then what? Now you have to store the contaminated water or filter particles out of the water in real-time (same problem as before but now wet).

Flushing it down the drain was the original problem.

While trying to filter tiny particles, you also catch all the bigger particles, clogging your filter up really fast.