In this system, the permanent pool value is increased to reduce the loading ratio. This reduced loading ratio allows the bacteria to more quickly stabilize organic material, which limits odor production. This system works well with a center pivot irrigation system. Cost depends on the site. Farmers must be willing to maintain a large permanent pool.
Anaerobic digestion offers excellent odor control.
By controlling the temperature of anaerobic processes, year-round odor control is achieved. Methane fuel results from the process and can be used for heat or electrical generation. Skilled operators and routine maintenance is needed to successfully operate an anaerobic digester. Aeration also offers excellent odor control. This incorporates oxygen into the manure through mechanical means that supports aerobic rather than anaerobic bacteria.