[Stoves] Cleaning Dung

[Frank Shields]

Oh I have lots of experience in cleaning manure, compost and the like. I
even published a test procedure on how to do it in TMECC methods manual for
the US Composting Council. Nice to work with clean manure. So much better
than that dirty smelly stuff. 

 

You need two buckets. One five gallon and the other three gallon size. Cut
the bottom out of the three gallon size and duct tape a fine mesh screen to
cover the bottom. Add manure to the five gallon bucket and fill with water
and stir. Insert the smaller bucket and with an up -N down motion lower it
into the solution. The up and down will keep the particles from clogging the
screen. Pump or dip out the water from the small bucket.

 

We use this to measure weed seeds in compost and manure so the screen size
is small enough to keep weed seeds from being removed from the manure. We
get 80 to 90% recovery from spiked samples using cucumber. We need to remove
the salts so we wash with di water until the EC is below 1 mmhos/cm. We also
do not want the manure to go anaerobic when growing the seeds so the wash
removes the more available soluble organics. If you want to dry the washed
manure just burry a roll of toilet paper in the center of the sample and
leave overnight. Water goes in and all you need to do is unwrap the first
layer of paper. All this is lab scale, of course.   

  

Frank

 

 

Frank Shields

42 Hangar Way

Watsonville,  CA  95076

(831) 724-5244 tel

(831) 724-3188 fax

frank at biomasslab.com

 

 

 

 

 

From: stoves-bounces at lists.bioenergylists.org
[mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Kevin
Sent: Friday, February 10, 2012 7:52 AM
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Cleaning Dung

 

Dear Boston

----- Original Message ----- 

From: Boston Nyer <mailto:bostonnyer at gmail.com>  

To: Discussion of biomass cooking stoves
<mailto:stoves at lists.bioenergylists.org>  

Sent: Friday, February 10, 2012 11:06 AM

Subject: [Stoves] Cleaning Dung

 

Hello, 

 

I'm looking to clean/rinse cow dung and do not have any experience doing so.
Does anyone have any experience cleaning dung and would like to share?  

 

# I've never done it, but I think it is a good idea, requiring further
development work. Big thing is to have use for the "wash water". 

 

# Simplest thing would be to slurry the Manure/dung to remove solubles.
Solubles could be simply decanted, or the remaining pulp could be filter
pressed to get a drier cake.

 

# Removal of the soluble protein, salts and micronutrients should allow the
remaining fibre to be dried easier, to have a higher calorific value, and to
burn safer, with less risk of dioxin formation. Washed dung could be
briquetted in a simple press, but the washing process would probably remove
the natural "binders", and thus a binder of some sort may have to be added.
Richard Stanley has done a lot of work on manufacturing fuel briquettes from
various locally available biomass feeds

 

# On the one hand, the "dung wash water" could make an excellent
"Fertigation Feed." On the other hand, depending on dung source, soil type,
local rainfall, crop being grown, intensity of use, etc, there may be a
problem with salt buildup in the soil.

 

Best wishes, 

 

Kevin Chisholm

 

Thank you!

Boston


 

-- 
Boston 

Skype: BostonNyer

Cell: (585) 503-3459

www.burndesignlab.org

 

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