Occurrence and load of micropollutants discharged from urban and industrial wastewater treatment plants to receiving environment in the Yeşilırmak Basin

2021-8-27
İnce, İrem
The occurrence of micropollutants in the aquatic environment is an emerging topic. It is known that the wastewater treatment plants (WWTPs) are the main point sources of the micropollutants. With this regard, the purpose of the study is to determine the occurrence of micropollutants in the WWTPs, to detect the significant discharges, and to analyze the impacts of these discharges on the receiving bodies. A 2-year monitoring study was conducted in Yeşilırmak River Basin and 6 urban WWTPs (UWWTPs), 14 industrial WWTPs (IWWTPs), and related 22 surface water stations were analyzed for 45 priority substances defined by the EU Water Framework Directive (WFD) and 250 specific pollutants. The analysis results showed that the average concentrations of 22 and 38 micropollutants exceed the environmental quality standards (EQSs) in the effluents of UWWTPs and IWWTPs, respectively. Process contributions (PC) of these micropollutants were calculated and significant discharges were identified. The impacts of significant discharges were assessed by comparison of the pollution loads in the upstream and downstream of the related WWTP and results revealed that the Çorum UWWTP, Samsun OIZ, Turhal Sugar, and Özdemir Antimony Mine IWWTPs had the most significant effects on the downstreams, especially for metals. Additionally, the micropollutant removal efficiencies of 5 WWTPs were investigated, and the results showed that the WWTPs were not highly effective in micropollutants removal. This study provides comprehensive results to understand the conditions and effects of the WWTPs in the basin for competent authorities.

Suggestions

Occurrence, fate and removal of endocrine disrupting compounds (EDCs) in Turkish wastewater treatment plants
KOMESLİ, Okan Tarık; Muz, M.; Ak, M. S.; BAKIRDERE, Sezgin; Gökçay, Celal Ferdi (2015-10-01)
Endocrine disrupting compounds, EDCs, are somewhat recently recognized pollutants which are often classed within 'emerging micropollutants' in the environment jargon. These compounds are known to interfere with the delicate balance of the endocrine system of animals and man, causing variety of undesirable outcomes. Their sources in natural waters are the domestic and industrial effluents. The main cause of concern with EDCs is their tendency to accumulate in fish causing gender shifts and reduced fecundity....
Effectiveness of algae in the treatment of a wood-based pulp and paper industry wastewater
Tarlan, Esra; Dilek, Filiz Bengü; Yetiş, Ülkü (2002-04-27)
In this study, the ability of algae to treat a wood-based pulp and paper industry wastewater was investigated. Tests were performed in batch reactors seeded with a mixed culture of algae. Under different lighting and initial wastewater strength conditions, changes in COD, AOX and color contents of reactors were followed with time. Algae were found to remove up to 58% of COD, 84% of color and 80% of AOX from pulp and paper industry wastewaters. No remarkable differences were observed in COD and color when li...
Formation of Zn- and Fe-sulfides near hydrothermal vents at the Eastern Lau Spreading Center: implications for sulfide bioavailability to chemoautotrophs
Hsu-Kim, Heileen; Mullaugh, Katherine M.; Tsang, Jeffrey J.; Yücel, Mustafa; Luther, George W. (2008-05-19)
Background: The speciation of dissolved sulfide in the water immediately surrounding deep-ocean hydrothermal vents is critical to chemoautotrophic organisms that are the primary producers of these ecosystems. The objective of this research was to identify the role of Zn and Fe for controlling the speciation of sulfide in the hydrothermal vent fields at the Eastern Lau Spreading Center (ELSC) in the southern Pacific Ocean. Compared to other well-studied hydrothermal systems in the Pacific, the ELSC is notabl...
Evaluation of salt tolerance in sto transformed Arabidopsis thaliana and Nicotiana tabacum plants
Selçuk, Feyza; Yücel, Ayşe Meral; Department of Biology (2004)
Salinity is one of the limiting factors of crop development. Together with causing water loss from plant tissues, salinity also leads to ion toxicity. Under salt stress, increase in Ca+2 concentration in cytosol can decrease the deleterious effects of stress. The binding of Ca+2 to calmodulin initiates a signaling cascade involving the activation of certain transcription factors like STO and STZ. This signal transduction pathway regulates transport of proteins that control net Na+ influx across the plasma m...
Fate and removal of pesticides in wastewater treatment plants –case of Yeşilirmak basin
Kocaman, Kumru; Dilek, Filiz Bengü; Yetiş, Ülkü; Department of Environmental Engineering (2019)
The effluent of wastewater treatment plants (WWTP) had been shown to be a significant source of micropollutants in surface waters. In this study, the aim was to investigate the biological treatment of commonly found micropollutants in Yeşilırmak river basin, with special emphasis on the effects of operational conditions on their removal in conventional biological WWTPs. Based on the monitoring results of TÜBİTAK project (115Y013) “Management of Point and Diffuse Pollutant Sources in Yeşilırmak River Basin” ...
Citation Formats
İ. İnce, “Occurrence and load of micropollutants discharged from urban and industrial wastewater treatment plants to receiving environment in the Yeşilırmak Basin,” M.S. - Master of Science, Middle East Technical University, 2021.