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UDC 628.31:661.5

MOROZOVA K. M., Stepanov S. V., Stepanov A. S., Sokolova T. V., Solkina O. S., Zhukova M. A.

Biological treatment of dairy industry wastewater in a membrane bioreactor (part 1)

Summary

The results of research study in the field of biological treatment of dairy wastewater are presented. The studies carried out under contact conditions showed that the kinetics of oxidation of dairy wastewater pollutants with activated sludge can be described by enzymatic reactions equation for substrate inhibition; at that, the obtained inhibition constants point at the increase of the wastewater toxicity after chemical flotation for biological treatment processes. The technology has been proved with simulative effluent in a pilot membrane bioreactor. The kinetic dependences of organics oxidation by BOD_full, nitrification and denitrification were determined. The increase of oxidation capacity of the facilities by 1.46 at the sludge concentration increase from 4 to 10 g/l is shown that allows reducing significantly the size of the biological treatment facilities when using MBR technology. In the course of experimental studies at MBR plant and kinetic experiments under contact conditions the coefficients of inhibition with activated sludge metabolism products were determined for the simulative solution of wastewater by BOD_full, for nitrification and denitrification. The temperature constant value for aerobic heterotrophic conversion, for nitrification and denitrification processes has been found.

Key words

wastewater , biological treatment , membrane bioreactor , activated sludge , kinetic constants , dairy factory

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REFERENCES

1. Diatlova T. V., Pevnev S. G., Fedorovskaia T. G. [Dairy wastewater treatment]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2008, no. 2, pp. 12–15. (In Russian).
2. Shifrin S. M., Ivanov G. V., Feofanov Iu. A. Ochistka stochnykh vod predpriiatii miasnoi i molochnoi promyshlennosti [Meat and dairy industry wastewater treatment. Moscow, Legkaia i Pishchevaia Promyshlennost’ Publ., 1981, 272 p.].
3. Stepanov S. V., Solkina O. S., Stepanov A. S. Ochistka stochnykh vod predpriiatii molochnoi promyshlennosti. Traditsii i innovatsii v stroitel’stve i arkhitekture. Stroitel’nye tekhnologii [Dairy wastewater treatment. Traditions and innovations in civil engineering and architecture. Construction technologies. Under the editorship of M. I. Bal’zannikov, K. S. Galitskov, A. K. Strelkov. Samara, SGASU Publ., 2016, 545 p.].
4. Rusten B., Lundar A., Eide O., Odegaard H. Chemical pretreatment of dairy wastewater. Water Science & Technology, 1993, v. 28 (2), pp. 67–76.
5. Cornel P., Krause S. Membrane bioreactors in industrial wastewater treatment – European experience, examples and trends. Water Science & Technology, 2006, v. 53 (3), pp. 37–44.
6. Stepanov S. V., Gabidullina L. A., Morozova K. M., Stepanov A. S., Sokolova T. A. [Evaluation of the impact of wastewater from separate oil refining units on biological treatment process]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2016, no. 7, pp. 44–50. (In Russian).
7. Shvetsov V. N., Morozova K. M., Nechaev I. A., Kiristaev A. V. [Theoretic and technological aspects of using biomembrane technologies in enhanced wastewater treatment (part 1)]. Vodosnabzhenie i Sanitarnaia Tekhnika, 2006, no. 12, pp. 25–29. (In Russian).
8. Henze M., Harremoes P. Ochistka stochnykh vod. Biologicheskie i khimicheskie protsessy [Wastewater treatment. Biological and chemical processes. Moscow, Mir Publ., 2004, 399 p.].