You probably want to find out about "wicking." I'm not sure if that's a good enough term to search on, though. Although using "evaporation pond", especially in the "Q&A, Tips and Tricks" section will get you side discussions that lead to good things. The other option is some sort of pumping over small metal things that become large surfaces in aggregate. Well that's how all the grey water systems work, really. The problem with mechanical pumping is the crap in the gray water clogs up the pump.
The Lady with a Lamprey
"The powerful are exploiting people, art and ideas, and this leads to us plebes debating how to best ration ice.
Man, no wonder they always win....." Lonesomebri
Get a Taint, you pathetic cur!