The effect of purifi ed sewage discharge from a sewage treatment plant on the hysicochemical state of water in the receiver
Journal Title: Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation - Year 2016, Vol 48, Issue 3
Abstract
The paper presents changes in the contents of physicochemical indices of the Sudół stream water caused by a discharge of purified municipal sewage from a small mechanical-biological treatment plant with throughput of 300 m3•d–1 and a population equivalent (p.e.) – 1,250 people. The discharge of purified sewage caused a worsening of the stream water quality. Most of the studied indices values increased in water below the treatment plant. Almost a 100-fold increase in ammonium nitrogen, 17-fold increase in phosphate concentrations and 12-fold raise in BOD5 concentrations were registered. Due to high values of these indices, the water physicochemical state was below good. Statistical analysis revealed a considerable effect of the purified sewage discharge on the stream water physicochemical state. A statistically significant increase in 10 indices values (BOD5, COD-Mn, EC, TDS, Cl, Na+, K+, PO4 3–, N-NH4 + and N-NO2) as well as significant decline in the degree of water saturation with oxygen were noted below the sewage treatment plant. On the Rother hand, no statistically significant differences between the water indices values were registered between the measurement points localised 150 and 1,000 m below the purified sewage discharge. It evidences a slow process of the stream water self-purification caused by an excessive loading with pollutants originating from the purified sewage discharge.
Authors and Affiliations
Włodzimerz Kanowik, Agnieszka Policht-Latawiec, Magdalena Wiśnios
The upper Odra as a case study of the impact of channel regulation on its morphodynamics
The aim of the research was to compare morphodynamics of the Odra river channel in three different sectors and to find the main difference in the way of sediment transport before and after regulation in meandering, strai...
Variability of suspended sediment grain size distribution in winter floods
The work presents the results of research concern variability of suspended sediment grain size, transported during the winter floods in agricultural catchment, in the period of hydrological years 2012–2015. The informat...
Application of a particle swarm optimization to a physically-based erosion model
The difficulties involved in calibration of physically based erosion models have been partly attributable to the lack of robust optimization tools. This paper presents the essential concepts and application to o...
Analiza przestrzenna ilości sedymentu oraz pokrywy roślinnej w zlewni rzeki Tapacura określona na podstawie zdalnych obserwacji oraz analizy GIS
Artykuł przedstawia sposób wykorzystania zebranych w terenie danych dotyczących pokrywy roślinnej oraz ilości sedymentu określonego za pomocą zdalnych obserwacji oraz analizy GIS w celu monitorowania środowiska i zarządz...
Ocena intensywności erozji eolicznej Płaskowyżu Mongolskiego z wykorzystaniem techniki oznaczania 137Cs
W pracy przedstawiono wyniki badań intensywności erozji eolicznej Płaskowyżu Mongolskiego, określonej na podstawie ośmiu prób gruntu pobranego wzdłuż transektu o długości około 1400 km, przebiegającego przez teren Mongol...