This article examines a type of windmill manure lagoon aerator. This windmill is mounted on pontoons anchored in the middle of an Embro farmers 330,000-gallon manure tank. The pits contents are brought to the surface gradually where they are exposed to the air. The Embro area farmers farm became the experimental site not only because he has an interest in keeping odours under control, but also because he has two adjacent manure tanks.
Odour levels were low and manure nutrient levels were not affected by the machine. No maintanance is required and the amount of power needed to spin the windmill depends on the consistency of the liquid. The agitator costs between $3000 and $5000 depending on whether they are wind or electrically driven.