Research Progress in Biological Package for Aquaculture Wastewater Treatment

With the rapid development of the fisheries, aquaculture species have degraded, especially for high-density aquaculture of random discharge of industrial wastewater and domestic sewage so that capacity of self-purification and regulation of ponds reduced, and water environment exacerbated. For instance, baits and feces entered into the water in the farming mode of main feeding, so that the amount of ammonia produced in aquiculture, sub-nitrate nitrogen, chemical oxygen demand and biological oxygen demand severely exceed the standard. Ameliorating the water environment of aquaculture has become the key technology and research focus for sustainable development of breeding production.