H2S
Control for Dry Manure Storage Practices - Landscaping
| Pro |
Con |
| Visually pleasing |
Time to establish or costly to plant established trees |
| Traps multiple gases and odor |
Potential to have reduced effectiveness over time |
Landscaping may reduce the emission of housing
odors, as well as odors generated by other components of the
livestock operation, beyond the property line. Landscaping acts
as a permeable filter for particle emissions, slowing the particulate
movement and diluting the concentrations of emissions. Trees
and shrubs act as biofilters for odorous compounds that are attached
to fine particles. By landscaping with both a treeline and a
row of shrubs, particles at various heights within a plume can
be adsorbed. To maximize adsorption, landscape materials with
large surface areas are recommended. Trees and shrubs placed
around the facility should not impede building ventilation and
therefore are often located on property lines. Costs associated
with landscaping will vary depending on selected trees and shrubs,
and on perimeter size. The estimate of a shelterbelt planted
around a 3,000-head hog facility using "higher" cost tress
($25 per shrub or tree), calculated as $0.68 per pig for one year,
amortized over 20 years at 5 percent, is just $0.09 per pig. These
costs include maintenance costs. In addition to acting as a natural
filtration system for odors, landscaping has the additional benefit
of being aesthetically pleasing to the eye and of restricting the
view of the operation. So, while documented effectiveness on emissions
is scarce, the value of creating a facility that is pleasant to
the eye should not be underestimated.
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