DVO, Inc.

Phosphorus, Condensed

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Up to 90% of phosphorus can be economically captured, in a form that is more economical to transport to land that needs it.

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Offers Groundbreaking Performance

Phosphorus is essential to all living things – and in particular it is a valuable nutrient fertilizer for agriculture. Put simply, crops cannot grow without it.

Phosphorus is also a “non-renewable” resource with a finite global supply. Much of it eventually ends up in landfills or in places or forms that are not recoverable. Many scientists have produced evidence that we will be running out of phosphorus within a few decades. Unfortunately, the mining practices employed to obtain “new” phosphorus involves the “strip-mining” of thousands of acres/hectares of land, bringing along with it associated negative environmental consequences.

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Yet, through a variety of pathways excess phosphorus can also find its way into our rivers and lakes — leading to algae blooms and sometimes causing severe damage to sensitive aquatic ecosystems. Agricultural and commercial/industrial wastes can be contributing sources of excess phosphorus in our environment.

For all those reasons it just makes sense to recover phosphorus and safely recycle it whenever we can.

By treating these wastes first in DVO’s patented 'Two-Stage Mixed Plug Flow™' anaerobic digester, and then employing this new Phosphorus Recovery [PR] system, one can both conserve these valuable minerals as well as help protect our natural resources.

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This PR system is organic chemistry-based (no centrifuge is employed) and has been successfully commissioned at a large dairy farm in the Northwest — as well as two other locations. It is, in-part, the “guaranteed retention time” offered by the DVO’s patented anaerobic digester design that allows this PR process to be both economical and effective. As a result, the majority of a waste stream’s phosphorus content now resides in a condensed solid fertilizer product.

PR System Features

  • Fully-automated operation,
  • Very low operating cost,
  • Guaranteed performance.

  • Phosphorus and other nutrients (including valuable micronutrients) are condensed into a stackable, storable, transportable – and even marketable – solid fertilizer product
  • In so doing, the environmental “pollution potential” of the liquid waste stream is also dramatically reduced
  • AD+ PR allows a more cost-effective and efficient waste or nutrient (fertilizer) management plan, for municipalities, farmers and agribusinesses
  • AD+ PR eliminates the burdensome practice of land-applying high-strength/odiferous wastes
  • Both the irrigated and landspread processed fertilizer products offer:
    • Reduced nutrient loading
    • Odor mitigation
    • Plant-available nutrients enabling their application to growing crops and immediate incorporation,
      • significantly expanding the practical timeframe for nutrient redistribution, and
      • reducing the possibility of a spill, which could contaminate a waterway

The operating costs for this new phosphorus recovery system are extremely low – averaging one-eighth of a penny (USD) per gallon of liquid processed. When compared to the cost of transporting that same gallon longer distances by truck, which (depending upon the distance traveled and other factors) can be 10-50 times more expensive, the financial payback for this system can often be measured in months instead of years.

“Not only is DVO’s PR system a low-maintenance, sustainable treatment solution that works for agriculture and industry — it also provides real benefits for the environment,” said Doug VanOrnum, Vice President Strategy and Technology for DVO. “Largely because these ‘plant-ready’ fertilizers and micronutrients are captured in a form that can now be safely transported and utilized in areas that need them.”

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