Preliminary Studies Characterizing Wastewater from the Intensive Culture of Channel Catfish and Nitrification in Laboratory Scale Submerged Filters

摘要

A study was conducted to determine the pollutional load generated by catfish cultured under a salinity range of 1000 to 9000 mg/l TDS and to evaluate the effect of high salinity on the process of biological nitrification in laboratory scale submerged filters. Water quality parameters that were monitored included: COD, BOD5, PO4-P, Organic-P, NH3-N, NO3-N, Organic-N, SS, and VSS. A respirometer study also was performed to determine the influence of high salinity on the exertion of nitrogenous BOD. The results of the wastewater characterization study demonstrated that increasing the salinity from 1000-3000 mg/l TDS stimulated nutrient production, while increasing the salinity from 3000 to 9000 mg/l TDS decreased the nutrient production rates.