Ammonia Control for Animal Housing
Systems with Liquid Manure - Impermeable Barriers
| Pro |
Con |
| Prevents transmission of dust and any particulates carried on dust |
In some cases, may just change the shape and direction of the plume |
An alternative to filtering particles during
air movement is to stop the movement altogether. Windbreak walls
or air dams have proven effective in reducing downwind, dust
particle concentrations, and odor concentration. However, no
data is currently available regarding hydrogen sulfide. Windbreak
walls have been constructed with 10-ft ´ 10-ft pipe frames
and tarpaulins, and placed at the end of swine-finishing buildings,
immediately downwind of the exhaust fans. Downwind dust and odor
concentrations were reduced on demonstration facilities, in areas
with windbreak walls, due to plume deflection. The kind of material
used for the barriers (tarpaulins on a frame or solid wood, for
example) will determine the life of the barriers, which can be
from a few years to decades before replacement is needed.
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