Preview

Advanced Engineering Research (Rostov-on-Don)

Advanced search

Determination of the law of probability density distribution of colony-forming units number under livestock waste disinfection

https://doi.org/10.23947/1992-5980-2017-17-2-136-140

Abstract

Introduction. An advanced technique of the livestock waste disinfection is considered. The essence of the method is in the integral physicochemical action of the alternating magnetic field combined with a chemical agent. The inductor can implement this method. A residual number of the colony-forming units of total coliforms is selected as the most critical parameter characterizing the quality of the disinfection process of livestock effluents. It is proposed to use the mathematical experimental design theory to improve the efficiency of investigating the disinfection process of livestock waste. Its application implies a normal law of distribution of the value frequency of colony-forming units of total coliforms. Materials and Methods . In the course of this study, the following methods were used: direct and indirect instrumental measurement; micrographics; least quadrants, theoretical definition of the random distribution, and statistical data processing. Research Results . The hypothesis on a normal distribution law was tested by setting up an experiment at the stand with certain conditions. As a result of the conducted experiments, a sample of values consisting of 100 observations is obtained. Based on the aprior information analysis, a hypothesis on the normal distribution law of the value frequency of colony-forming units of total coliforms was adopted. Discussion and Conclusions. In the course of studying the distribution law of the value frequency of colony-forming units of total coliforms characterizing the quality of the disinfection process, the accepted critical value of the Pearson test was compared to the calculated one. Since the design value is less than the adopted critical one, the hypothesis on a normal distribution law is accepted.

About the Authors

Nikolay V. Limarenko
Don State Technical University
Russian Federation


Victor P. Zharov
Don State Technical University
Russian Federation


References

1. Limarenko, N.V., Zharov, V.P., Shapoval, B.G. Analiz protsessa obezzarazhivaniya stokov sel'skogo khozyaystva elektromagnitnym polem. [Process analysis of agricultural wastewater treatment with electromagnetic field.] Young Researcher of the Don, 2016, no. 1. Available at: http://mid-journal.ru/upload/iblock/444/444610884667126 efef1ed54ff367356.pdf (Accessed: 08.09.2016) (in Russian).

2. Limarenko, N.V. Analiz sposobov obezzarazhivaniya. [Analysis of disinfection methods.] Sb. tr. 8-y mezhd.-y nauch. prakt. konf. «Sostoyanie i perspektivy razvitiya sel'skokhozyaystvennogo mashinostroeniya». [Proc. 8-th Int. Sci.-Pract. Conf. “State and prospects of the development of agricultural machinery”.] Rostov- on-Don, 2015, pp. 605–608(in Russian).

3. Limarenko, N.V., et al. Issledovanie parametrov magnitnogo polya v rabochey kamere induktora. [Study on magnetic field parameters in the inductor working chamber.] Vestnik of DSTU, 2016, no. 1, pp. 136–142 (in Russian).

4. Adler, Y.P., Markova, E.V., Granovskiy, Y.V. Planirovanie eksperimenta pri poiske optimal'nykh usloviy. [Planning an experiment when searching for optimal conditions.] 2nd revised and enlarged ed. Moscow: Nauka, 1976, 280 p. (in Russian).

5. Minko, A.A. Statisticheskiy analiz v MS Excel. [Statistical analysis in MS Excel.] Moscow: Williams, 2004, 448 p. (in Russian).

6. Blinova, E.I. Planirovanie i organizatsiya eksperimenta. [Planning and organizing an experiment.] Minsk: BGTU, 2010, 130 p. (in Russian).

7. Porsev, E.G. Organizatsiya i planirovanie eksperimentov. [Organizing and planning experiments.] Novosibirsk: NGTU, 2010, 155 p. (in Russian).

8. Siebertz, Karl, van Bebber, David, Hochkirchen, Thomas. Statistische Versuchsplanung. Design of Experiments (DoE). London. New York: Springer Heidelberg Dordrecht, 2010, 326 p.

9. Spirin, N.A., Lavrov, V.V. Metody planirovaniya i obrabotki rezul'tatov inzhenernogo eksperimenta. [Methods for planning and processing the results of an engineering experiment.] Ekaterinburg: GOU VPO UGTU-UPI, 2004, 257 p. (in Russian).

10. Ventsel, E.S., Ovcharov, L.A. Teoriya sluchaynykh protsessov i ee inzhenernye prilozheniya. [Theory of stochastic processes and its engineering applications.] 5th reimpression. Moscow: KNORUS, 2013, 448 p. (in Russian).


Review

For citations:


Limarenko N.V., Zharov V.P. Determination of the law of probability density distribution of colony-forming units number under livestock waste disinfection. Vestnik of Don State Technical University. 2017;17(2):136-140. (In Russ.) https://doi.org/10.23947/1992-5980-2017-17-2-136-140

Views: 447


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.


ISSN 2687-1653 (Online)