H2S
Control for Animal Housing Systems with Liquid Manure - Landscaping
| Pro |
Con |
| Visually pleasing |
Time to establish or costly to plant established trees |
| Traps multiple gases and odors |
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 absorption,
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 the 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 3000-head hog facility using “higher”
cost trees ($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
benefits 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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