<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>A comparative analysis was conducted on raw and treated wastewater and the concentrations of heavy metals in sewage sludge from a wastewater treatment plant (WWTP). The research aimed to demonstrate improved efficiency in reducing heavy metal levels as a part of municipal and industrial waste management, with a specific emphasis on minimising the overall environmental impact. In this study, we presented the results of a repeated measures analysis of variance and assessed compliance with heavy metal content standards in sewage sludge from municipal treatment using a one-sample t-test against a reference norm. The analysis included measurements conducted between 2004 and 2015. We conducted an analysis of heavy metals, including zinc (Zn), lead (Pb), cadmium (Cd), copper (Cu), chromium (Cr), and nickel (Ni), manganese (Mn) and mercury (Hg). High Zn concentration that we observed in pre-treatment wastewater raised important questions. Leakages in sewage networks can result in contaminants infiltrating the wastewater, thereby increasing pollutant concentrations. Elevated concentrations can stem from industrial activities, where Zn and pollutants are discharged into wastewater as byproducts of industrial operations. The study illustrated the attainment of the highest sanitary standards, ensuring that treatment processes effectively eliminate harmful toxic substances, ultimately guaranteeing that the final product is safe for further reclamation processes.</p>
</abstract>

A comparative analysis was conducted on raw and treated wastewater and the concentrations of heavy metals in sewage sludge from a wastewater treatment plant (WWTP). The research aimed to demonstrate improved efficiency in reducing heavy metal levels as a part of municipal and industrial waste management, with a specific emphasis on minimising the overall environmental impact. In this study, we presented the results of a repeated measures analysis of variance and assessed compliance with heavy metal content standards in sewage sludge from municipal treatment using a one-sample t-test against a reference norm. The analysis included measurements conducted between 2004 and 2015. We conducted an analysis of heavy metals, including zinc (Zn), lead (Pb), cadmium (Cd), copper (Cu), chromium (Cr), and nickel (Ni), manganese (Mn) and mercury (Hg). High Zn concentration that we observed in pre-treatment wastewater raised important questions. Leakages in sewage networks can result in contaminants infiltrating the wastewater, thereby increasing pollutant concentrations. Elevated concentrations can stem from industrial activities, where Zn and pollutants are discharged into wastewater as byproducts of industrial operations. The study illustrated the attainment of the highest sanitary standards, ensuring that treatment processes effectively eliminate harmful toxic substances, ultimately guaranteeing that the final product is safe for further reclamation processes.

Municipal Wastewater Quality Control: Heavy Metal Comparative Analysis—Case Study

Department of Natural Gas Engineering, Faculty of Drilling, Oil and Gas

Environmental Protection and Natural Resources

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A comparative analysis was conducted on raw and treated wastewater and the concentrations of heavy metals in sewage sludge from a wastewater treatment plant...

Municipal Wastewater Quality Control: Heavy Metal Comparative Analysis—Case Study

Publicado en línea: 31 dic 2023

Páginas: 127 - 134

DOI: https://doi.org/10.2478/oszn-2023-0023

Palabras clave
Harmful effects, heavy metal, potentially toxic elements, pretreatment wastewater, sewage sludge, wastewater treatment plant

© 2023 Wiktor Halecki et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Municipal Wastewater Quality Control: Heavy Metal Comparative Analysis—Case Study

Publicado en línea: 31 dic 2023

Páginas: 127 - 134

DOI: https://doi.org/10.2478/oszn-2023-0023

Palabras claveHarmful effects, heavy metal, potentially toxic elements, pretreatment wastewater, sewage sludge, wastewater treatment plant

© 2023 Wiktor Halecki et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Palabras clave
Harmful effects, heavy metal, potentially toxic elements, pretreatment wastewater, sewage sludge, wastewater treatment plant