[Iris7]

Your remark about manganese process scrubbing led to Enviroscrub and the Pahlman process. Interestingly their "our technology" site area contained only this diagram:



No technical details whatever were given. No consumption rates, no description of the technology, no cost estimates, nothing. The 2,000 cubic feet per minute demonstration trailer has a toylike capacity but looks to be an overweight load. The process appears to consume a large volume of water although probably less than wet scrubbing. the reaction reagents are proprietary. Rather looks like a catalytic process with associated catalyst poisoning problems, etc. Makeup water strangely needs RO. Reagent is electrolytically regenerated. Looks like high energy consumption and maintenance costs.

Am I seeing this wrongly?

http://www.enviroscrub.com/index.asp

[Eric in the Ozarks]

I think they have a couple full size scrub units on line at Minnesota Power. Can't say why they haven't updated their web page. They claim the manganese is recycled and there is no need for a big sludge pond. Power consumption is much less than a typical scrubber, which I'm told can consume 25-30 percent of the power plant's production.