Baking Soda Swimming Pool
This is a nice idea, I like it although if it gets applyed to all the worlds power station we'll have too much baking soda than we know what to do with, it cannot all be used in baking. We'll probably end up burying the excess, like we do with everything else that we don't know where to put.
Not sure about banding around the term pollutant though, it seems its definition is simular to that of noise "any unwanted sound", and that depends very much on your persepective. The trouble is, having too much of one "unwanted" substance in a particular place may be defined as a pollutant, that substance could be anything from huge piles of cucumber in my sodding sandwiches all the time or vast amounts of radioactive material.
The problem here is really about maintaining balance within the eco-system, without creating any new problems to deal with, and one mans pollutant might be anothers mans/creatures gold.
I'm off too research man bear pig on the interweb thingy now.