They learned to create ceramics from waste water

Modern urban water management uses chemical reagents for the treatment of natural water—

coagulants, they combine particles of impurities into a larger mass. 

The authors note that this process results in sediments with a high water content. Precipitation volumes reach up to 5% of the station's capacity. 

Now scientists from SUSU have used waste from water treatment plants to produce ceramic products. The sediment was treated by freezing-thawing and then dried.

We artificially froze the sediment in the freezerchamber, on an industrial scale this process is carried out in special devices - ice generators. When freezing, water crystallizes; at the same time, the sediment thickens, and after thawing, the water is easily separated as a free liquid. 

Marina Belkanova, Candidate of Chemical Sciences, Associate Professor of the Department of Urban Planning, Engineering Networks and Systems of SUSU

The author tested the calculations in real conditions:the experiment showed that the use of waste water can shorten the drying time, reduce the number of rejects in production and the density of bricks.

Also, scientists noted that the data obtained onimproving the properties of ceramics was then tested in the laboratory of the Chelyabinsk plant specializing in the production of ceramic blocks and bricks. The results of both experiments were the same.

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