Yara, here's a water-scrubber I saw built-in to a cyclone/chaff-collector in Korea.
At the bottom right, you see a pump that sends pressurized water to three spray heads at the top of the cyclone. That captures a lot of the particulate matter which gets filtered through that very low-tech fabric filter below, along with the chaff (yes, wet chaff!).
I also recently saw a setup that had TWO cyclones, with the first collecting the chaff the traditional way, and the second containing the water-scrubber.
Also, here's a photo I took in Korea back in early 2010.
Those blue boxes on the left are electrostatic precipitators, while on the right is their ozone generator. You can see that the exhaust is split into three, running parallel, before being combined with the ozone product (no water scrubber in this setup). To be honest, their exhaust ducting was pretty crazy in general, but they say their exhaust is fairly clean.For those reading who aren't familiar with some of these things:
An EP or electrostatic precipitator, is simply a "smoke eater," which has the exhaust travel into a box with metal plates that are electrically charged. The particulate-matter (which makes up the "smoke" of the exhaust) is attracted to the charged plates and sticks to it like a magnet. Machines like that are fairly common in certain bars and clubs to eliminate tobacco smoke. However, while it can help capture a lot of the solid particles, it cannot eliminate odors.
That's where the ozone generator comes in. Ozone is O3, while 'normal' oxygen is O2. The ozone generator machines create O3 that is mixed into the exhaust. O3 does not want to be O3 in our part of the atmosphere... it wants to be O2, so it wants to get rid of that extra oxygen atom. So that oxygen atom attaches itself to the gaseous molecules that contribute to odors, changing the molecular structure into something that has no odor, or is at least much less smelly. So basically, if O2 can oxidize, O3 is a super-oxidizer.
I did a bunch of research on ozone generators when I saw the setup above back last March. Yes, they can work fairly well, if the setup is designed well. The problem is that ozone is good for the stratosphere, but potentially bad in our troposphere (where we live). The problem is that the super-oxidization properties of O3 make it dangerous for us life-forms. Interestingly, ozone generators are not illegal in the US, but probably only because they haven't attracted enough attention to become scary.