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Eveporation of water for slurry

  1. Oct 21, 2014 #1
    Hi all
    New to the forum. I have a question we are dairy farming and we produce a lot of cattle slurry. There is a high water content in the slurry from washing surface area. We are need to find more land to spread the slurry, which will mean hauling longer distances. I was thinking is there anyway the slurry could be put through a machine and evaporate the water. This way we would have less manure to spread and it would have a much higher fertilizer value. I am just thinking out loud, any suggestion would be appreciate.
     
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  3. Oct 23, 2014 #2

    CWatters

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    Problem is it takes energy to evaporate (boil) off the water. You get that free from the sun when you spread it on the land. I don't know if there is a machine to do the job but it would need an energy source to power it.
     
  4. Oct 23, 2014 #3

    CWatters

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    Google found that that there are slurry separators. This one used to produce bedding material..

    http://www.farmersguardian.com/home/machinery/machinery-features/slurry-separator-system-turns-waste-into-free-bedding/55333.article [Broken]

    If you have access to lots of the stuff (or could form a co-operative with neighbours) it might be possible to use Anaerobic Digestion to generate power. In some countries there are generous "Feed in Tariffs" for such electricity. Google found this Review of Anaerobic Digestion Plants on UK Farms.

    http://www.fre-energy.co.uk/pdf/RASE-On-Farm-AD-Review.pdf
     
    Last edited by a moderator: May 7, 2017
  5. Oct 24, 2014 #4
    Thanks for your reply, I have searched the net and can only find a few company's one called ww.evaporator.com that sells such machines going by their sites they are giving costs as low at 1 to 2 cents/ gal of per distilled waste. Which is reasonably low. We are restricted in the volumes we spread on the land so we would need less land to spread the slurry so this would also be a saving toward s the machine. We have looked Anaerobic digestion but with the tariffs we receive for electricity it does not pay. Anyone know what temp slurry would have to be heated up to, to evaporate of the water making it safe to either condense and put back in the water ways or just leave it off as steam.
     
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