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The Crystal Peak project processes all manure from a 14 site grow/finish farm into a high-quality
fertilizer. Of the 14 lagoons on the farm, three will be used as storage cells.
Internal Recirculation Process (IRP) units were installed at each eight barn site to concentrate and
condition manure solids. The concentrated solids from the IRP are pumped to digesters where they remain for approximately one month. The digested solids are then transferred to a settling basin. Solids
are pumped off the bottom of the settling basin to a centrifuge while liquids are pumped to three storage cells.
Solids go to the centrifuge where they spin at high speeds for further separation of water and solids.
The solids come out of the centrifuge as a cake. The liquid off the centrifuge goes to the same storage ponds as the excess water from the settling basin. The cake goes to a mixer to be blended with
other inputs before it moves to the dryer.
The analysis of the organic fertilizer produced by the Crystal Peak system is certified to be 3-11-1. The
product is certified organic by the Washington State Department of Agriculture.
Bio-gases generated during the digestion process will be collected and used to fuel the dryer. The plant
has been designed for minimal emissions by use of thermal oxidation and wet scrubbing of exhaust gases. Dust emissions from the dryer are controlled by a traditional bag house and cyclone and recycled
back into the product.
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