steam unit heater

Evaporator

Back in the early 90's the company I worked for was in trouble with the EPA for flushing ammonium persulfate down the drain. They told us to conform or close. We found out that mixing the ammonium persulfate with aluminum would tone the effluent down but not enough to satisfy the EPA. We did find out we could dispose of the sludge that was created could not flush the liquid down the drain.



After some looking around I built a 30kw evaporator that handled about 60 gallons a night. Commercial units were available for about $25k, I think it cost me about $750 to put my version together and it ran just fine for two years. A little ingenuity goes a long way.



Since your application is in a mine, I imagine you will have to insulate your exhaust stack so the vapor doesn't condense before getting outside. If the liquid is pumped to the surface that should not be an issue.A brief look around turned up this link -



http://www.lenntech.com/evaporation.htm



good luck,



Bob