THE EFFECTIVENESS OF COAGULANTS FOR TURBIDITY AND COLOR REMOVAL FROM NATURAL WATER

Abstract

In this work, the effectiveness of the use of coagulants Al₂(SO₄)₃·18H₂O and RM-1 in reducing the level of turbidity and colour (reduction in colour) of natural water was investigated. The object of the study is natural water, namely water from the Dnipro River. The results showed that the optimal dose of coagulant Al₂(SO ₄)₃‧ 18H₂O was 10.0 mg dm^-3. The optimal dose of coagulant RM-1 was also 10.0 mg dm^-3. Residual turbidity and colour are reduced to 0.0 mg dm^-3, 12.50, 190, when using Al₂(SO₄)₃·18H₂O and RM-1, respectively. Since the residual concentration of aluminium in purified water in all samples after purification with coagulants was less than 0.05 mg dm^-3, it is reasonable to use these coagulants, as they do not have a negative effect on the health of consumers. The efficiency of using the RM-1 coagulant to remove turbidity and reduce the colour of the natural water of the Dnipro is high, so this coagulant has the potential to be chosen as a new coagulant.