The present study aims was included an assessment of an industrial dairy wastewater in karbala-Iraq. This study was conducted for one year (from January to December 2013) and included monthly water analysis for various physic-chemical factors. spirulina sp are belonging to blue green algae viable for biological treatment. The results were showed to reduce nutrient concentrations from wastewater such as, nitrate, phosphorus and sulphate. In addition, the ability of these algae to reduce total

more »

... dness, alkalinity, chloride, C.O.D, T.D.S, calcium and magnesium hardness. The recorded ability of this algae on removing nitrate 80 % , active phosphorus 72 % and sulphate 61 % While total hardness 56%, alkalinity was 71% , chloride 56 % , C.O.D 77 % T.D.S 54 %, calcium and magnesium hardness 59% during the tenth day of treatment.