Comparative analysis of empirical dependencies for hydraulic calculation of wastewater gravity flow network
https://doi.org/10.21285/10.21285/2227-2917-2021-1-462-469
Abstract
In this work, we carried out a comparative analysis of empirical dependences (A. Chézy and N.F. Fedorov formulas) for the hydraulic calculation of wastewater gravity flow networks. Using these formulas on a specific example, the hydraulic slope of a gravity pipeline was calculated and the error in the values of the actual hydraulic potential characteristics of the pipes was determined. The data obtained showed that calculations using the Chézy formula ensure the highest accuracy. The A. Chézy formula was revised by introducing the concept of reduced pipe inner diameter. The dependency graph i = f (dpr) was plotted, indicating that the revised version of the A. Chézy formula gives more accurate results than the classical one. The revised A. Chézy formula is recommended for the hydraulic calculation of wastewater gravity flow networks. We proposed developing calculation tables for the hydraulic calculation of wastewater drainage flow networks with internal deposits.
About the Authors
O. A. Prodous
INCO-Expert LLC
Russian Federation
Russian Federation
Oleg I. Prodous, Dr. Sci. (Eng.), General Director
37/1 Moskovsky pr-t, St. Petersburg, 190005, Russia
D. I. Shlychkov
Moscow State University of Civil Engineering (National Research University)
Russian Federation
Russian Federation
Dmitriy I. Shlychkov, Cand. Sci (Eng.), Associate Professor of the Department of Water Supply and Water Disposal
26 Yaroslavskoye Shosse, Moscow, 129337, Russia,
References
1. Blyashko YaI. Use of sewage effluents of water utilities, pressure-gravity water conduits and discharges of a thermal electric power plant to generate electrical energy. Glavnyi energetik. 2020;6:35-44. (In Russ.).
2. Vointseva II, Novikov MG, Prodous OA. Extension of the period of operation of pipelines of water supply systems made of steel and cast iron pipes. Inzhenernye sistemy. 2019;1:44-47. (In Russ.).
3. Vointseva II, Nizhnik TYu, Strikalenko TV, Baranova AI. Anticorrosive properties of disinfectant reagents based on polyhexamethylene guanidine hydrochloride. Voda: khimiya i ekologiya. 2018;10-12(117):99-108. (In Russ.).
4. Prodous OA, Novikov MG, Samburskiy GA, Shipilov AA, Terekhovt LD, Yakubchik PP, et al. Recommendations for the reconstruction of new metal water supply pipelines made of steel and gray cast iron. St. Petersburg – Moscow: Own Publishing House; 2021. 40 p. (In Russ.).
5. Prodous O.A. Dependence of the duration of the study of metal water supply pipelines on the thickness of the sediment layer on the inner surface of the pipes. Sbornik dokladov XV Mezhdunarodnoi nauchno-tekhnicheskoi konferentsii «Yakovlevskie chteniya» (Moscow, 19 March 2020). Moscow: IISS – MGSU Publ.; 2020. p. 113-117. (In Russ.).
6. Prodous OA. Methodology for assessing the continued use of metal pipelines in water supply and drainage systems. Vodoochistka. Vodopodgotovka. Vodosnabzhenie. 2021;1(157):4-10. (In Russ.).
7. Prodous OA, Shlychkov DI. On the change in the values of the hydraulic characteristics of pressure sewer headers made of steel and cast iron pipes with internal deposits. Izvestiya vuzov. Stroitel'stvo = News of higher educational institutions. Construction. 2020;12(744):70-77. (In Russ.).
8. Orlov VA. Energy saving as a result of reconstruction of water supply networks by trenchless methods. Aktual'nye problemy stroitel'noi otrasli i obrazovaniya: Sbornik dokladov Pervoi Natsional'noi konferentsii (Moscow, 30 September 2020). Moscow, 2020. p. 866-870. (In Russ.).
9. Chupin RV. Optimization of developing drainage systems: monograph. Irkutsk: ISTU Publ.; 2015. 418 p. (In Russ.).
10. Shevelev FA, Shevelev AF. Tables for hydraulic calculation of water pipes. M.: Publ. House "Bastet"; 2014. 382 p. (In Russ.).
11. Shlychkov DI. Problems of technical condition of existing pipeline systems. Innovatsii i investitsii. 2020;4:207-210. (In Russ.).
12. Shlychkov D. Еnergy-saving as an integral part of technical and economic efficiency. Opcion. 2019;35(24S):1626-1636.
13. Schwermer CU, Uhl W. Calculating expected effects of treatment effectivity and river flow rates on the contribution of WWTP effluent to the ARG load of a receiving river. Journal of Environmental Management. 2021;288:112445. https://doi.org/10.1016/j.jenvman.2021.112445.
Review
For citations:
Prodous O.A., Shlychkov D.I. Comparative analysis of empirical dependencies for hydraulic calculation of wastewater gravity flow network. Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost. 2021;11(3):462-469. (In Russ.) https://doi.org/10.21285/10.21285/2227-2917-2021-1-462-469
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