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UDC 628.161.2

SHVETSOV V. N., MOROZOVA K. M., FESENKO L. N., Skryabin A. Yu., Vergunov A. I.

Chlororganic and bromorganic compounds in drinking water:
methods of their removal


Pilot tests of biosorption membrane technology that allows reducing trihalomethanes concentration in drinking water by both preventing from their formation and by removing them from treated water were carried out. Biosorption membrane pretreatment of the Don River water provides for 1.4–1.5 reduction of toxic chlororganic and bromorganic compounds formation during post chlorination of water. Advanced water treatment in a biosorption membrane reactor ensures redu­cing the concentration of chlororganic compounds formed during primary chlorination. The average efficiency of redu­cing chloroform concentration in the biosorption membrane reactor was 45%, that of dichlorobromomethane – 82%, and of chlorodibromomethane – 89%, whereas filters provided for 23% chloroform reduction efficiency and 33% of dichlorobromomethane and chlorodibromomethane reduction efficiency, respectively. Additional treatment of the Don water in the biosorption membrane reactor after physical and chemical pretreatment provided for the post treatment efficiency (organics removal) of 33% for COD, 35% for permanganate value, and 34.3% for color. At the same time the efficiency of organics removal in filters was 19% for COD, 9% for permanganate value, and 10% for color. The highest post treatment efficiency in both cases was reached for turbidity removal. The efficiency of turbidity reduction in the biosorption membrane reactor was 91%, in filters – 58%. The results of long-term studies carried out for two years in the pilot plant with the Don River water showed that the development of biosorption membrane technologies was a promising direction of improving natural water treatment processes, in particular, for preventing from formation of chlororganic and bromorganic compounds during chlorination.

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