Scholarly record
STUDY OF THE HYDRAULIC PARAMETERS OF A SELF-CLEANING SEWAGE OVERFLOW IN SIMILAR TO REAL-TIME CONDITIONS
Abstract
Sewerage, as a system designed to collect and discharge wastewater, also receives many other incidental objects, defined as sludge. Their removal from the network is usually carried out in the wastewater treatment plant (WWTP), where they are removed by known methods. However, this does not offer a solution for solid sludge, as it causes blockage in the network. Such a solution could be the modification of a well-known wastewater overflow into a new type of structure, known as a self-cleaning overflow. For this purpose, it is necessary to thoroughly study the operation of this type of structure, both in terms of flow and sediment distribution. This article presents the results of a large-scale study of the transport and distribution of solid deposits at this facility under near-real conditions.
Publication details
References20
Darachev, S., B. Tzankov, "Investigation of Sediment Transport During the Operation of an Overflow with a Self-Cleaning Effect under Laboratory Conditions", BulAqua, ISSN 1312-3912, 2022, No. 1-2, pp. 62-71 (in Bulgarian).
Tzankov, B., "Solution for the Sewerage Network on Pirotska St. Under Conditions of Highly Densely Packed Underground Infrastructure", BulAqua, ISSN 1312-3912, 2004, No. 1, pp. 16-19 (in Bulgarian).
Tzankov, B. "Hydraulic Model Investigations of a Side Sewer Overflow", BulAqua, ISSN 1312-3912, 2005, No. 4, pp. 27-34 (in Bulgarian).
Tzankov, B., M. Pechinova, "Dimensioning of a Side Sewer Overflow with a Short Pressure Section in the Outlet Channel", Construction, ISSN 0562-1852, 2008, No. 4, pp. 23-37 (in Bulgarian).
Hager W. H., Wastewater Hydraulics: Theory and Practice, Springer-Verlag, Germany, 2010, pp 1-656, ISBN 978-3-642-11382-6, DOI: 10.1007/978-3-642-11383-3.
Butler D., Digman C., Makropoulos C., Davies J. W., Urban Drainage, CRC Press, UK, 2018, pp 1-560, ISBN 978-1-498-75058-5, DOI: 10.1201/9781315154435.
Ashley R. M., Bertrand-Krajewski J. L., Hvitved-Jacobsen T., Sewerage: Solids, Muco-sediments and Pathogens in Combined Sewer Systems, IWA Publishing, UK, 2004, pp 10-85, ISBN 978-1-780-40348-9.
Saul A. J., Stovin V. R., Efficiency of an asymmetric tangent blow-off device at a storm sewage overflow, Water Science and Technology, UK, vol. 25/issue 8, 1992, pp 173-182, ISSN 0273-1223, DOI: 10.2166/wst.1992.0189.
Lauchlan C. S., May R. W. P., Sediment transport in sewers, Proceedings of the Institution of Civil Engineers - Water Management, UK, vol. 156/issue 2, 2003, pp 109-120, ISSN 1741-7589, DOI: 10.1680/wama.2003.156.2.109.
O'Brien J., Arthur S., Shellim J., The performance of self-cleansing sewer designs, Water Science and Technology, UK, vol. 84/issue 1, 2021, pp 145-158, ISSN 0273-1223, DOI: 10.2166/wst.2021.215.
Vaheddoost B., Safari M. J. S., Sediment Transport in Natural and Engineered Systems: Processes and Modeling, Frontiers in Earth Science, Switzerland, 2023, pp 1-12, ISSN 2296-6463, DOI: 10.3389/feart.2023.1254321.
Ebtehaj I., Bonakdari H., Design of self-cleansing sewers using a new evolutionary algorithm, Journal of Cleaner Production, Netherlands, vol. 112/part 1, 2016, pp 815-824, ISSN 0959-6526, DOI: 10.1016/j.jclepro.2015.08.068.
Guo Y., Saul A. J., Effect of chamber geometry on the separation efficiency of a combined sewer overflow (CSO) structure, Water Science and Technology, UK, vol. 52/issue 5, 2005, pp 111-118, ISSN 0273-1223, DOI: 10.2166/wst.2005.0123.
Campisano A., Creaco E., Modica C., Experimental and numerical analysis of sediment transport in a laboratory-scale sewer pipe, Urban Water Journal, UK, vol. 19/issue 4, 2022, pp 356-365, ISSN 1573-062X, DOI: 10.1080/1573062X.2021.2017004.
Alfaro-Alejo R., Fernandez-Sila G. N., Assessment of sediment grain size and hydraulic interactions in urban drainage systems, Ambiente e Agua - An Interdisciplinary Journal of Applied Science, Brazil, vol. 20, 2025, pp 1-19, ISSN 1980-993X, DOI: 10.4136/ambi-agua.3063.
Igneva-Danova, T., Reliability of Pumping Stations, 2024, Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024, ISSN 1314-2704, Vol 24(3.1)
Igneva-Danova, T., Hydraulic capacity assessment of urban drainage networks in terms of changed runoff coefficient, Annual of the University of Architecture, Civil Engineering and Geodesy Sofia, ISBN 978-954-049-0, 2020, Volume 53, Issue 1, (in Bulgarian)
Uyumaz, A., Muslu, Y., Flow over side weirs in circular channels, Journal of Hydraulic Engineering, ASCE, USA, vol. 111, issue 1, 1985, pp 144-160, ISSN 0733-9429, DOI: 10.1061/(ASCE)0733-9429(1985)111:1(144).
R. Arsov, T. Igneva-Danova, Method and software for side overflow structure dimensioning, Annual of the University of Architecture, Civil Engineering and Geodesy Sofia, Scientific Research, Sofia, 2014, (in Bulgarian)
Igneva-Danova, Т., Sewer system hydraulic design and hydraulic modeling criteria according BDS EN752:2017, BDS EN16933-2:2017 and Regulation № РД-02-20-8, Bulaqua, 3-4 (2020), (in Bulgarian)