[Digestion] biogas from restaurant oil & food waste

[bingham]

We always filter anything added to our raw bio-diesel tanks or vegetable oil storage tanks.
  ----- Original Message ----- 
  From: Dick Gallien 
  To: For Discussion of Anaerobic Digestion 
  Sent: Thursday, October 06, 2011 6:34 PM
  Subject: Re: [Digestion] biogas from restaurant oil & food waste


  Hi Wayne,


  You mentioned:
  The waste vegetable oil we collect from the restaurants has about 10-12% water and food waste in it.  We heat the oil up to 65oC and then drop this 'soup' out from the bottom. 


  How do you drop the soup out from the bottom?  I've never heated WVO, but thought the 2' of goop in the bottom of a 1500 gal.. plastic tank, with a valve at the base or a 60 gal. cone tank, with a valve in the bottom,  would work, but the good oil just funnels down through the soup, so I have to pump the good oil out from the top,  What's your secret?   
  Thanks,  Dick


  Dick Gallien  
  22501 East Burns Valley Road
  Winona  MN  55987
  dickgallien at gmail.com  [507]454-3126
  www.thefarm.winona-mn.us


  Prison bars do the confining, allowing the prisoner a mental freedom not possible in schools, where an endless barrage of assignments, lectures, questions and tests, serve the same purpose, under the guise of education, while distracting as efficiently as the cracking of whips, keeping the imprisoned from discovering and pursuing their passions or noticing that there are no real bars------and by the time they might realize the purpose of their confinement, it is too late.









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