| Different concentrations prepared 2,4,8,16,32 ppt from flow water to Shatt-Al-arab by adding Chlorella vulgares and Navicual busiedtii as alone for each concentration. The results showed that the concentrations of salinity reduced to 0, 1.78, 9.45, 15 ppt after 10 days, with removed percentage 100, 100, 77.75, 40.93, 37.12 % respectively for Chlorella vulgares the cell numbers of Chlorella vulgares reached to 58.123, 60.123, 69.712, 37.234, 30.546 ×104/ml comparing with the control 55.652 ×104/ml while the absorbability of salinity reached to 0.378, 0.391, 0.489, 0.231, and 0.192 nm comparing with 0.342 as control. The external cell wall of Chlorella vulgares was swelling at 32 ppt. the removal percentage of salinity reached to 100, 100, 75 , 66, 45 % for Navicual busiedtii with cell numbers reached to 97.113, 120.903, 178.024, 231.112, 77.132 ×104/ml respectively comparing with 91.362 ×104/ml as control, while the absorbability of salinity ranched to 0.354, 0.367, 0.484 and 0.123 nm without change at cell wall of Navicual busiedtii. |