Justification of Reasonability of Equalization Basins Implementation for the Technology of Municipal Wastewater Treatment

Authors

  • O. S. Kovrov National Technical University «Dnipro Polytechnic», Dnipro
  • D. V. Kulikova National Technical University «Dnipro Polytechnic», Dnipro

DOI:

https://doi.org/10.31649/1997-9266-2020-150-3-13-21

Keywords:

household wastewaters, equalization basin, aeration tank, sedimentation pond, biochemical oxygen demand

Abstract

The inflows of municipal sewages discharged to wastewater treatment plants for full biological treatment can vary widely throughout the day. Therefore, one of the ways of optimizing the operation of wastewater treatment plants is the use of regulating tanks – equalization basins, providing the possibility of uniform supply of wastewater with averaged concentration. The purpose of the paper is to substantiate the feasibility of using equalization basins in the technological cycle of complete biological treatment of household wastewaters. According to the analysis of technological data of the Livoberezhnna Aeration Station (LAS) located in Dnipro City the sewage inflow rates at treatment plant have significant daily variations. In this regard, there is a need to implement a separate technological operation to equalize the water inflow before the primary sedimentation tanks and aeration tanks in order to normalize the flow and average concentration of pollutants. On the basis of the initial data of qualitative and quantitative indicators of water samples chemical analysis the load of biochemical oxygen demand (BOD) at the treatment plant was calculated. The volume of the equalization basin is determined according to the methodology widely used in American universities and engineering companies in the USA. The results of calculations of wastewater averaging according to BOD indicate the effect of equalization of pollutant concentrations during the day. Thus, the ratios of BOD load values for wastewater treatment without equalization and with equalization basins are: maximum to minimum — 25,82 and 2,05; minimum to average — 0,08 and 0,62; maximum to average — 2,06 and 1,27 respectively. It is established that the average wastewater outflow in the volume of 0,307 m3/s allows avoid overloading by BOD concentrations, in contrast to the actual inflow, the volume of which can fluctuate during the day.

Author Biographies

O. S. Kovrov, National Technical University «Dnipro Polytechnic», Dnipro

Dr. Sc. (Eng.), Associate Professor, Professor of the Chair of Ecology and Environmental Technologies

D. V. Kulikova, National Technical University «Dnipro Polytechnic», Dnipro

Cand. Sc. (Eng.), Associate Professor, Associate Professor of the Chair of Ecology and Environmental Technologies

References

М. Д. Волошин, О. Л. Щербак, Я. М. Черненко, і І. М. Корнієнко, Удосконалення технології біологічної очистки стічних вод. Дніпродзержинськ, Україна: Дніпродзержинський держ. техн. ун-т, 2009.

М. Ю. Козар, і Л. А. Саблій, «Ефективна технологія очищення стічних вод солодового заводу,» Вісник інженерної академії України, № 3–4, с. 209-212, 2013.

І. М. Таварткіладзе, О. В. Замогильна, і О. А. Коваль, «Попередня очистка стічних вод від виробництва плит МДФ,» [Електронний ресурс]. Проблеми водопостачання, водовідведення та гідравліки, № 18, с. 49-59, 2012. Режим доступу: http://nbuv.gov.ua/UJRN/PVVG_2012_18_7 .

З. С. Одноріг, О. Р. Василюк, О. І. Рубай, і Д. О. Березюк, «Модернізація технологічної лінії очищення стічних вод птахофабрики,» Науковий вісник НЛТУ України, № 29 (3), с. 96-98, 2019.

M-N. Pons, and J.-P. Corriou, “Implementation of an Equalisation Tank on the Cost 624 Wastewater Treatment Plant Benchmark,” IFAC Proceedings Volumes, no. 34(5), pp. 433-437, 2001. https://doi.org/10.1016/S1474-6670(17)34258-1 .

B. N. Uba, and J. A. Ekundayo, “Nutrient status of wastewater in a fertilizer-factory-waste discharge equalization basin,” Bioresource Technology, № 51 (2–3), pp. 135-142, 1995. https://doi.org/10.1016/0960-8524(94)00106-B .

Y. P. Khare, G. M. Naja, R. Paudel, and C. J. Martinez, “A watershed scale assessment of phosphorus remediation strategies for achieving water quality restoration targets in the western Everglades,” Ecological Engineering, № 143, 105663, 2020. https://doi.org/10.1016/j.ecoleng.2019.105663 .

C.-T. Chang, and B.-H. Li, “Optimal design of wastewater equalization systems in batch processes,” Computers & Chemical Engineering, no. 30 (5), pp. 797-806, 2006. https://doi.org/10.1016/j.compchemeng.2005.12.003 .

I. Queinnec, J. Harmand, and S. Tarbouriech, “Analysis and Control of a Wastewater Equalization System,” IFAC Proceedings Volumes, no. 37 (3), pp. 493-498, 2004. https://doi.org/10.1016/S1474-6670(17)32630-7 .

R. Muoio, et al., “Optimization of a large industrial wastewater treatment plant using a modeling approach: A case study,” Journal of Environmental Management, no. 249, 109436, 2019. https://doi.org/10.1016/j.jenvman.2019.109436 .

W.-H. Chen, S.-J. Lin, F.-C. Lee, M.-H. Chen, T. Y. Yeh, and C. M. Kao, “Comparing volatile organic compound emissions during equalization in wastewater treatment between the flux-chamber and mass-transfer methods,” Process Safety and Environmental Protection, no. 109, pp. 410-419, 2017. https://doi.org/10.1016/j.psep.2017.04.023 .

ДБН В.2.5-75:2013. Каналізація. Зовнішні мережі та споруди. Основні положення проектування. Видання офіційне. Київ: Міністерство регіонального розвитку, будівництва та житлово-комунального господарства України, 2013, 96 с.

С. В. Яковлев, Ред., Очистка производственных сточных вод. Москва: Стройиздат, 1985, 335 с.

G. Tchobanoglous, F. L. Burton, and H. D. Stensel, Wastewater Engineering: Treatment and Reuse, 4th Ed. Metcalf & Eddy. Inc., McGraw-Hill Education, 2003.

D. Kulikova, O. Kovrov, Y. Buchavy, and V. Fedotov, “GIS-based Assessment of the Assimilative Capacity of Rivers in Dnipropetrovsk Region,” Journal of Geology, Geography and Geoecology, no. 27 (2), pp. 274-285, 2018. https://doi.org/https://doi.org/10.15421/111851 .

V. Kolesnyk, D. Kulіkova, and S. Kovrov, “In-stream settling tank for effective mine water clarification,” in Annual Scientific-Technical Collection “Mining of Mineral Deposits”. CRC Press / Balkema, Netherlands; Taylor & Fransis Group, London, UK. pp. 285-289, 2013.

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Published

2020-06-24

How to Cite

[1]
O. S. Kovrov and D. V. Kulikova, “Justification of Reasonability of Equalization Basins Implementation for the Technology of Municipal Wastewater Treatment”, Вісник ВПІ, no. 3, pp. 13–21, Jun. 2020.

Issue

No. 3 (2020)

Section

ECOLOGY AND ENVIRONMENTAL SECURITY

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