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<DIV><FONT size=2 face=Corbel>Cover the pit with HDPE sheeting. Smell goes away
the you can use the effluent to knife in as fertilizer.</FONT></DIV>
<DIV><FONT size=2 face=Corbel>The gas is easily collected and cleaned up for
CHIP generator unit. </FONT></DIV>
<DIV><FONT size=2 face=Corbel>Lowest cost of any system I am aware
of.</FONT></DIV>
<DIV><FONT size=2 face=Corbel>Brent</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=water.alchemy.ltd@clear.net.nz
href="mailto:water.alchemy.ltd@clear.net.nz">Bill Rucks</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=digestion@lists.bioenergylists.org
href="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, June 07, 2011 2:24
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Digestion] "Re: Rex enquiry
"</DIV>
<DIV><BR></DIV><!-- Converted from text/rtf format -->
<P dir=ltr><SPAN lang=en-gb></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-nz><FONT size=2 face="Courier New">Hi all,</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> I am
going to do something I swore I would never do. Unfortunately, I
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> just
don't have the time and know that the folks on this list know
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> far more
than me and can point me in the right direction.</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> I live in
a rural area where we are subject to occasional power cuts </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> (power
lines down mostly due to weather) but, more importantly, our
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> power
bills are rocketing as South Africa races to catch up to the
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> rest of
the world in terms of cost of power. Historically we had paid
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> off coal
fired power plants that gave us the lowest cost of power in </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> the
world. Anyway, now that power costs are rising, own generation
is</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">> becoming an
economic necessity.</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> In my
area we have a large number of dairy farms milking >500 cows.
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> These are
sizeable operations and the manure they produce is worth</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>
pursuing.</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> Typically
they all have slurry dams and they spread their manure from </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> time to
time (much to our temporary dismay while the odour kills
us!).</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> The
question is: what is an economical way of producing gas? Bear in
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> mind,
efficiency is not an issue in this case. What we are talking
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> about is
getting gas that can be cleaned up and fed into motors to </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> produce
power. I am looking at using 3 litre petrol engines that will
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> push out
about 50kW tops. So, we are not looking for anything fancy. </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> A
plugflow system would make most sense as they can pump it into the
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> one end
while the processed material leaves the other. Heating </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>>
suggestions? What about using the engine exhaust to heat water and
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> circulate
that around the reactor or use it to preheat the incoming </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> feed?
Here I was simply thinking of a double tank with hot water in
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>>
the</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">> outer tank...
any other suggestions?</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> The other
thing these farmers use a lot of is sileage (chopped maize </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> that is
stored and allowed to ferment). Has anyone had experience </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> adding
some of this to the AD?</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>
</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>> Looking
forward to hearing from you all!</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-nz><FONT size=2 face="Courier New">>>
Rex</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-gb></SPAN><SPAN lang=en-gb></SPAN></P>
<P dir=ltr><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2
face=Arial>>Greetings Re</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial>x</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-gb><FONT size=2 face=Arial>></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>I</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> can understand your problem and can only offer
my</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>personal</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> advice!</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> </SPAN></P>
<P dir=ltr><SPAN lang=en-gb><FONT size=2 face=Arial>></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>Electrical</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> energy out</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2 face=Arial>of waste is
a</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2
face=Arial>n</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> expensive</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial>/time consuming</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial>
process</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb>
<FONT size=2 face=Arial>I</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> would look into what</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>I</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> use my energy for and how can</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>I</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> reduce my</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial>electrical</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>requirement!!</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> </SPAN></P>
<P dir=ltr><SPAN lang=en-gb><FONT size=2 face=Arial>></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>Unfortunately</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> in this day and age</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> we look to</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial>supplement</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> out currant energy
consumption with renewable</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> energy </FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> ( not that this
cannot be done) !!</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2
face=Arial>></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT
size=2 face=Arial>W</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial>e should be all reducing our
energy</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>requirements</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> as much as we can</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> and to</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> start log what we use and think how we can
reduce, reduce, reduce. </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2
face=Arial>></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT
size=2 face=Arial>Then</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> we create a picture of how
much</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>electrical</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> we</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>need!!</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT
size=2 face=Arial>and the do the</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial>assessment</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> on what
energy</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2
face=Arial> resourse, human waste</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial>food waste, grass
ect</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial> you have</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb>
<FONT size=2 face=Arial>available</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> through this
email</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>list you should understand how much energy you can get out of your
waste!</FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-gb><FONT size=2 face=Arial>></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> I also look at
your</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>waste Gas stream</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> Co2 and
Biogas</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> most</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb>
<FONT size=2 face=Arial>dwellings</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> and building emit allot of gases and
we</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>dont know</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> about it !! </FONT></SPAN></P>
<P dir=ltr><SPAN lang=en-gb><FONT size=2 face=Arial>></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>W</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial>hen you no your total energy</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>potential</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial> both gas and
solid</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> then work on redirecting</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2 face=Arial>storing and
converting your waste back to energy</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2 face=Arial>!! simple
-</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb> </SPAN></P>
<P dir=ltr><SPAN lang=en-gb><FONT size=2 face=Arial>></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>I</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial> have a saying</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb> <FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2 face=Arial></FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial>Waste is not waste</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb> <FONT size=2
face=Arial>its</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb><FONT
size=2 face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb>
<FONT size=2 face=Arial>unutilised</FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-gb><FONT size=2 face=Arial> energy</FONT></SPAN><SPAN
lang=en-gb></SPAN><SPAN lang=en-gb><FONT size=2
face=Arial></FONT></SPAN><SPAN lang=en-gb></SPAN><SPAN lang=en-gb></SPAN></P>
<P dir=ltr><SPAN lang=en-gb></SPAN><SPAN lang=en-gb></SPAN><SPAN
lang=en-nz></SPAN><A name=""><SPAN lang=en-nz><FONT size=2 face=Arial>Bill
Rucks </FONT></SPAN></A></P>
<P dir=ltr><SPAN lang=en-gb></SPAN></P>
<P>
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