Many industrial manufacturing processes result in liquid waste products. These residual products can contain toxic or harmful chemicals which cannot be directly introduced in the sewer system or groundwater. In food processing plants such as dairy and meat processing the organic waste is too strong to introduce directly into the municipal sewer system. To properly dispose of these waste products, these facilities will have onsite wastewater treatment facilities. As with municipal wastewater treatment, air is provided to ponds or tanks to maintain specific levels of oxygen in the wastewater. This oxygen is required to keep bacteria alive and active so they can consume the waste products. The airflows are determined by the size and the amount of water, the type of waste, and system used to diffuse the air into the wastewater. The pressure at the discharge of the blower is determined by the depth of water and the losses in the piping system.