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1 Journal of Ecological Engineering

1 2020

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The Use of Sorbents for the Removal of Selected Anions from Wastewater after Production of Soda Ash

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Gołub A. , Piekutin J.

2020

tom Vol. 21, nr 2

104--110

The research on the use of sorbents to remove anions from the wastewater after soda production was conducted due to the need to protect waters against the pollution at the source of its formation. In the case of industrial plants introducing wastewater to surface waters, this requires modification of the production line or an additional stage of wastewater treatment, which will prevent pollution of the environment. The wastewater generated in the Solvay soda ash production process is characterized by strong alkaline pH, high electrolytic conductivity and high concentrations of chlorides, ammonia, sulfates, phosphates, calcium, potassium, sodium and magnesium. The paper presents the results of the research aimed at removing the chloride, sulfate and phosphate anions from wastewater from calcinated soda production using three sorbents: Halosorb, Compakt and Damsorb K. The ion removal process was carried out using a dynamic method with a varying deposit load in the range from 0.579 m3/(m2h) to 1.937 m3/(m2h). The concentrations of all tested anions were reduced, which indicates a high potential of the method and possibility of further, more detailed studies.