<p>5-day BOD and COD can be removed by biological aerobic treatment of saline wastewater. In this research, halophilic microorganisms, namely <em>Aspergillus oryzae</em> and <em>Halobacillus dabanensis</em> were isolated from a return sludge basin of a&nbsp; wastewater treatment plant in the City of Bandar Abbas &nbsp;in southern Iran , that contained &nbsp;a Total Dissolved&nbsp; Solid (TDS) of about 7500 mg l^-1. These microorganisms (bacteria and fungi) could tolerate 20% concentration of salt (NaCl) in Sabouraud-4% dextrose agar and Sabouraud-2% dextrose broth medium and brain heart (BHI) agar and BHI broth medium. The films of <em>Aspergillus oryzae</em> and <em>Halobacillus dabanensis</em> were formed around the Ca-alginate. These bioflims were introduced to a fixed bed column, on top of which saline wastewater was released with flow rates of 2-6 ml min^-1. According to the results of Stover-Kincannon model, the constant values of maximum BOD and COD were estimated at 0.066 mg BOD₅ l^-1min^-1 and 0.1449 mg COD l^-1 min^-1, respectively. The saturation constant values, at the flow rate of 2ml min^-1, by <em>Aspegillus oryzae </em>were 0.00003 mg BOD₅ l^-1min^-1 and 0.00038 mg COD l^-1min^-1. The removal process in fixed bed column was stopped after 1200 minutes.</p>