Aerobic lagoons require more surface area so that oxygen can freely enter the water. Algae often helps the process. O ne possibility for livestock waste after digestion in a lagoon is application to a constructed wetland. Nutrients and sediment are removed from water that flows into wetlands. Roots and stems in the water facilitate bacterial growth and filter and absorb solids.
Plants provide shade which keeps algae growth reduced, and convert nitrogen into a usable form.
Wetlands must be constructed under strict guidelines, and the state of North Carolina offers assistance, guidelines and possible cost assistance. Return to top of page. Updated May 10, 1996.