DETERMINATION OF THE DISINFECTANT ACTION OF CAUSTIC LIME ON THE MICROFLORA OF SLUDGE OF WASTEWATER OF CLEANING FACILITIES FOR SEWERAGE AND CATTLE-BREEDING COMPLEXES

Cover Page

Cite item

Full Text

Abstract

Introduction. The main task of treating sewage sludge is to obtain the final product, the properties of which would ensure the possibility of its utilization and minimize the damage to the environment. The sanitary and hygiene characteristics of the sediment are assessed by the presence of pathogenic microorganisms and helminths eggs. The degree of disinfection of the sediments is controlled according to SanPiN 2.1.7.573 - 96.

The objective of the work. Determination of optimal doses of caustic lime for disinfection of microbial contamination of sewage sludge of household wastewater of sewerage cleaning facilities (SCF) and liquid manure of the swine complex.

Material and methods. The object of the study were microbial communities of the sludge of the SCF household wastewater and liquid manure of the swine complex. Standard microbiological research methods were used in the work according to MU 2.1.5.800 - 99 and MR N FTs/4022. For representativeness, analyses were performed in triplicate.

Results. Caustic lime was added in the amount of 1 to 10% of the volume (mass) of the sludge under study into the sludge of household wastewater (humidity of 97 - 98%). The contact time was 0.5 hours, 1 hour, 3 hours. At a concentration of caustic lime of 5 and 6%, the absence of microflora was noted after 1 hour, at a concentration of caustic lime 8 - 10% - after 0.5 hours. After 3 hours, for any amount of caustic lime (from 1 to 10%) in the native sludge of wastewater sewerage, all the microorganisms under study were not shown. Into the liquid manure (humidity less than 85%), caustic lime was added in the amount of 4 - 10% of the volume (mass) of the material being examined. The exposure was of 1 and 3 hours. The complete death of microbes at any exposure was observed at a concentration of caustic lime 9 and 10%.

Conclusion. The investigations have shown the dynamics of death of microorganisms in studying the impact of caustic lime on both native and sterilized material to be the same. The total death of microorganisms during the treatment of sludge from household wastewater was observed at a concentration of caustic lime of 7 - 9%. The complete death of microbes in liquid manure (native and sterilized) at any exposure was observed at a concentration of caustic lime 9 and 10%.

About the authors

Piotr V. Zhuravlev

Rostov Research Institute of Microbiology and Parasitology

Author for correspondence.
Email: rostovniimp@mail.ru

MD, PhD., DSci., Head of the Laboratory of sanitary, microbiological and virological research methods and environmental impact assessment of the Rostov Research Institute of Microbiology and Parasitology, Rostov-on-Don, 344000, Russian Federation.

e-mail: rostovniimp@mail.ru

Russian Federation

V. V. Aleshnya

Rostov Research Institute of Microbiology and Parasitology

Email: noemail@neicon.ru
Russian Federation

B. I. Marchenko

Southern Federal University

Email: noemail@neicon.ru
Russian Federation

References

  1. RakhmaninYu.A., Doronina O.D. Strategic approaches to risk management to reduce human vulnerability due to changes in the water factor. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal]. 2010; (2): 8-13.
  2. Popova A. Yu. Strategic priorities of the Russian Federation in the field of ecology from the position of preserving the health of the nation. Public Zdorov’e naseleniya i sreda obitaniya [Health and habitat]. 2013; 231 (2): 4-7.
  3. Rakhmanin Yu. A., Novikov S. M., Rumyantsev G. I. Ways of improvement of methodology for assessing health risk from exposure to environmental factors. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal]. 2006; (2): 3-5.
  4. Aidinov G. T., Marchenko, B. I., Sinelnikov, Y. A. the Use of integrated assessment of the health status of the population in the task of improving the system of socio-hygienic monitoring. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal]. 2016; 95 (10): 980-5.
  5. Zhuravlev P. V., Aleshnya V. V., Golovin S. V., Panasonic O. P., Nedachin A. E., Talaeva Y. G., Artemova T. Z., GIPP E. K., Butorina N. N., Zagainova A. V. Monitoring of bacterial contamination of the waters of the Rostov region. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal]. 2010; (5): 33 – 5.
  6. Belyaeva SD, Gunther LI Management of sewage sludge -the most important ecological problem. Vodosnabzhenie i sanitarnaya tekhnika. [Water supply and sanitary engineering]. 2007; (1): 5-9.
  7. Poletaeva TN Utilization of sewage sludge of small treatment plants. Kommunal’noe hozyajstvo gorodov [Municipal economy of cities]. 2006; (72): 151-5.
  8. RakhmaninYu.A. Scientific and methodological principles of studying, assessing and regulating biological factors in environmental hygiene. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal]. 2010; (5): 4-8.
  9. Ospanov KT, Zhasibaev A. Analysis of the current state of treatment of sewage sludge in cities of the republican level. Vestnik KazNTU Almaty [Bulletin of KazNTU Almaty]. 2013; (5): 99.
  10. Dimidova L.L., Khromenkova E.P., Dumbadze O.S., Tverdokhlebova T.I., Upyrev A.V., Khutorianina I.V. Sanitary-epidemiological assessment of wastewater quality and their precipitation according to parasitological indicators. Teoriya i praktika bor’by s parazitarnymi boleznyami [Theory and practice of fighting parasitic diseases]. 2015; (16): 123 - 4.
  11. Lotosh V.E. Utilization of sewage and sediments. Resursosberegayushchie tekhnologii [Resource-saving technologies]. 2002; (24): 13-15.
  12. Khromenkova E.P., DimidovaL.L., Dumbadze O.S., AidinovG.T.,Shendo G.L., AgirovA.Kh., Batchaev H.X., Assessment of potential risk of pollution of surface water bodies by parasitic pathogens Human diseases Medicinskaya parazitologiya i parazitarnye bolezni [Medical parasitology and parasitic diseases]. 2015; (2): 3-6.
  13. Goncharuk E.I., Bardov V.G., Garkavy S.I., Yavorovsky A.P. Communal hygiene [Kommunal’naya gigiena]. Kiev: Zdorov’ya. 2006. 792 pp.
  14. Aleshnya V. V., Zhuravlev P. V., Panasonic O. P., Sedova D. A. Experimental study of the effect of chlorine on pathogenic and potentially pathogenic microorganisms. Zdorov’e naseleniya i sreda obitaniya [Health and environment]. 2018; (10): 17–21.
  15. Rakhmanin Yu. a., Zhuravlev P. V., V. V. Aleshnya, Panasonic O. V. Application of new nutrient medium for isolation of Salmonella from water bodies to assess the epidemic safety of water use. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal].. 2016; 95(5): 483-490.
  16. Aleshnya V. V., Panasonic O. P. Zhuravlev, P. V. Study of the influence of individual environmental factors on viability of Salmonella in water to determine its epidemic potential. Gigiena i sanitariya [Hygiene and Sanitation, Russian journal]. 2015; (7): 40-1.
  17. Strauch D. Survival of pathogenic microorganisms and parasites in excreta, manure and sewage sludge. Revue scientifiqueet technique (International Office of Epizootics). 1991; (10); (3): 813-46.
  18. Szejniuk B. etal. Przeżywalnośćpałeczek Salmonella Enteritidis w gnojowicyświńskiej. RocznikOchronaŚrodowiska. 2011; (13): 2049-59.
  19. SanPiN 2.1.7.573–96. Hygienic requirements for the use of wastewater and its sediments for irrigation and fertilizer
  20. Khromenkova E.P., Dimitova L.L., Dumbadze O.S., Upyrev A.V., Effectiveness of de-worming and disinvidence of sewage at sewage treatment plants of the South of Russia. Teoriya i praktika bor’by s parazitarnymi boleznyami [Theory and Practice of Combating Parasitic Diseases]. 2015; (15): 334-7.
  21. Appelbe O. K., Sedgley C. M. Effects of prolonged exposure to alkaline pH on Enterococcus faecalis survival and specific gene transcripts. Molecular Oral Microbiology. 2007; 22 (3): 169-74.
  22. Bilotta P., Kunz A. Tecnologias de pós-tratamento de dejetossuínosparainativação de organismospatogênicos. EngenhariaAgrícola. 2016; 33 (2).
  23. Chelme-Ayala P. et al. Advanced treatment of liquid swine manure using physico-chemical treatment. Journal of hazardous materials. 2011; (186): 1632-8.
  24. Vanotti M. B. et al. Removal of pathogenand indicator microorganisms from liquid swine manure in multi-step biological and chemical treatment. Bioresource technology. 2005; 96 (2): 209-14.
  25. Andreadakis A. D. Treatment and disinfection of sludge using quicklime. DGE/JRCEC European commission. Workshop around sludge. 1999: 31-37.
  26. Fomina I.G. Decontamination of sewage sludge by chemical methods. Vіsnik HNU іmenі V. N. Karazіna [V.N. Karazin Bulletin KhNU]. 2014; 1104 (10): 141-4.
  27. GOST 9179-77. Lime construction. Specifications (with Change No. 1)
  28. MU 2.1.5.800-99. Organization of sanitary inspection for effluent disinfection. Methodical instructions.
  29. MUK 4.2.1018-01 Sanitary-microbiological analysis of drinking water (Change N 1).
  30. MR № FTP/4022. “Methods of microbiological control of soil. Methodical recommendations” (app. Chief state sanitary doctor of the Russian Federation, 24.12.2004 N FTS/4022).

Supplementary files

Supplementary Files
Action
1. JATS XML
Download

Copyright (c) 2024 Zhuravlev P.V., Aleshnya V.V., Marchenko B.I.


СМИ зарегистрировано Федеральной службой по надзору в сфере связи, информационных технологий и массовых коммуникаций (Роскомнадзор).
Регистрационный номер и дата принятия решения о регистрации СМИ: серия ПИ № ФС 77 - 37884 от 02.10.2009.