TREATABILITY OF ALUM IN REMOVAL PHOSPHORUS FROM DAIRY WASTEWATER

الملخص

In this research, the technique of the jar using alum as coagulant was used as the most common in the world and abundance in the Iraqi environment, the preparation of artificial samples similar to the real dairy wastewater and taking the temperature of the laboratory as a reference in the completion of experiments. Experiments have seen the ability of aluminium sulphate to remove phosphorus from wastewater of the dairy plant by up to 95%. These removals are realized at certain working conditions in terms of the speed of rotation of the paddle which expressed as gradient velocity that achieved at 1076.915 sec-1 and the potential energy that can lead to better collision between the particles to achieve an increase in particle size and then sedimentation. This led to optimum dosage of aluminium equal to 0.5 mg/L at 20 °C.