Abstract
This review aims to identify management strategies in freshwater pond aquaculture wastewater in China. Aquaculture activities are the major cause of the increasing level of organic waste and toxic compounds in the aquaculture industry. The main contaminants of the wastewater effluent are suspended solids, ammonium, organic nitrogen and phosphorus. Aquaculture wastewater discharges may cause many environmental problems such as eutrophication to the receiving waters. Nutrient removal is essential for aquaculture wastewater treatment to protect receiving waters and for potential reuse of the treated water. Therefore, it is apparent that appropriate wastewater treatment processes are needed for sustaining pond aquaculture development. A number of physical, chemical, and biological methods used in wastewater treatment applied in freshwater pond aquaculture systems have been presented in this review. Among which biological treatment has been considered the most feasible approach for enabling water reuse. In this chapter, the principles of the wastewater treatment systems are examined.
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