Abstract
Analysis of the Proportion of Incidental Water in Annual Wastewater Inflows to a Selected Treatment Plant During a 15-Year Observation Period
Highlights
The most important principles of the European environmental policy until 2020 and in the perspective until 2050 are protection, preservation and improvement of the natural capital of the EU as well as protection of its inhabitants from environment-related pressures and threats to health and well-being [https://europa.eu/european-union/topics/environment_pl]
In 2004, 17 087 m3 of incidental water flowed into the analysed sewerage system, in 2017 this volume increased by 332% to a volume of 56 709 m3
Summarizing the obtained results, it may be stated that the share of incidental waters in the inflow to the analysed sewerage system in 2004 was at an average level in comparison with other objects in Poland and worldwide
Summary
The most important principles of the European environmental policy until 2020 and in the perspective until 2050 are protection, preservation and improvement of the natural capital of the EU as well as protection of its inhabitants from environment-related pressures and threats to health and well-being [https://europa.eu/european-union/topics/environment_pl]. The main source of incidental water in the sanitary sewerage system is rainwater or snowmelt, which enters the sewerage collectors through sewage manholes and, above all, through illegal connections of roof gutters to sewerage connections [Kaczor 2012, Kaczor and Bugajski 2012, Bugajski et al 2017] This problem is faced by sewage system operators in many countries [Brombach et al 2005, Tibbetts 2005, Birch et al 2010, Birch et al 2011, Thorndahl et al 2015]. Long-term monitoring of daily wastewater flows makes it possible to determine the volume of influent incidental water and to assess the effectiveness of any measures taken to seal the network and eliminate sources of inflow of incidental water to the sanitary sewer system [De Bénédittis 2004]
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