Wastewater Treatment for Cattle, Dairy and Other Livestock Operations
Livestock operations wastewater lagoons sometimes have a bad reputation for odor and buildup of sludge. These negative factors can be mitigated with a properly designed and maintained system. Using proper aeration, mixing and microbial dosing can significantly reduce sludge buildup and odors associated with these lagoons.
Wastewater from cattle and dairy operations typically consists of high concentrations of Biological Oxygen Demand (BOD), Total Suspended Solids (TSS), and fats, oils and greases (FOG). Lagoons use biological treatment to lower these concentrations prior to discharging them. In order to accomplish the treatment needed, the organisms that perform the biological treatment require an environment that is high in dissolved oxygen (DO) in the lagoon.
The portion of pollutants do not get digested in the biological process, become sludge and either floats on the surface or sinks to the bottom. When sludge builds up on the bottom, portions of it get cut off from oxygen in the water and the environment in the lagoon becomes anaerobic. When anaerobic conditions occur, different gasses are given off and they produce odor.