Evaluation of Heavy Metals and Associated Health Risks in a Metropolitan Wastewater Treatment Plant's Sludge for Its Land Application

2015-08-18
The objectives of this study are to monitor the heavy metal concentrations in sludge samples collected from the Ankara Central Wastewater Treatment Plant (ACWWTP) in Turkey, check if these concentrations comply with the Turkish Regulation (Regulation Regarding the Use of Domestic and Urban Sludges on Soil), and evaluate possible health risks of heavy metals in sludge due to ingestion of sludge by a child. Monthly sludge samples were collected from the ACWWTP during 2012 and analyzed for seven heavy metals (Cd, Cr, Cu, Hg, Ni, Pb, and Zn). According to the results from the study, heavy metal concentrations showed no common seasonal trend. All heavy metal concentrations, except for one sample in which Zn was found to be at the limit value, are below the Turkish Regulation limits. In addition, health risks calculations for the "child ingesting biosolids" pathway, which is one of the most critical pathways identified by the U.S. Environmental Protection Agency (USEPA) for land application, were carried out. Among the seven heavy metals, Pb contributed the most to the cumulative non-cancer health risks throughout 2012. Nevertheless, the results showed that cumulative non-cancer health risks associated with this pathway are within the acceptable non-cancer health risk level suggested by USEPA.
HUMAN AND ECOLOGICAL RISK ASSESSMENT

Suggestions

Analysis of the best available techniques for wastewaters from a denim manufacturing textile mill
YÜKSELER, hande; UZAL, NİĞMET; ŞAHİNKAYA, ERKAN; KİTİŞ, MEHMET; Dilek, Filiz Bengü; Yetiş, Ülkü (2017-12-01)
The present study was undertaken as the first plant scale application and evaluation of Best Available Techniques (BAT) within the context of the Integrated Pollution Prevention and Control/Industrial Emissions Directive to a textile mill in Turkey. A "best practice example" was developed for the textile sector; and within this context, BAT requirements for one of the World's leading denim manufacturing textile mills were determined. In order to achieve a sustainable wastewater management; firstly, a detail...
Evaluation of the hazardous waste landfill cap system design and clay layer thickness criteria of the Turkish Regulation on the Control of Hazardous Waste (RCHW) using the Hydrological Evaluation of Landfill Performance (HELP) model
Piskin, F. Yalcin; Demirer, Göksel Niyazi (Inderscience Publishers, 2007-01-01)
The hazardous waste landfill design criteria of the Turkish Regulation on the Control of Hazardous Waste (RCHW) was evaluated in this study. In the first part of the study, Hydrologic Evaluation of Landfill Performance (HELP) model was used to determine the significance of different components of the hazardous waste landfill cap system as required by the Turkish RCHW. In the second part of the study, the top and bottom clay layer thickness requirement of the Turkish RCHW was evaluated by running the HELP mo...
Comparison of two leaching tests to assess the effectiveness of cement-based hazardous waste solidification/stabilization
Yilmaz, Olcay; Çokça, Erdal; Ünlü, Kahraman (2003-06-11)
Development of fluorescent whole-cell bacterial bioreporters for detection of inorganic arsenic and cadmium
Elçin, Evrim; Öktem, Hüseyin Avni; Department of Biotechnology (2019)
Environmental heavy metal contamination in many regions of the world is a serious problem of ecological health. Fast and constant monitoring of their levels is significant for both preventing their accumulation and taking an immediate action for removal. As an alternative approach to standard laboratory techniques, various biosensor systems for detection of heavy metals have been proposed. Bacterial biosensors hold great promise for in-field detection of heavy metals. In this study, two different whole cell...
Evaluation of microplastics removal efficiency at a wastewater treatment plant discharging to the Sea of Marmara
Vardar, Suat; Onay, Turgut T.; Demirel, Burak; Kıdeyş, Ahmet Erkan (2021-11-15)
Levels, composition and fate of microplastics (MPs) were investigated along different compartments of a secondary wastewater treatment plant (WWTP) with nutrient removal on the northern Sea of Marmara coast (Istanbul, Turkey). When all samples were combined, fibers were found to be the most dominant particles, followed by hard fragments. 500–1000 μm and 1000–2000 μm were the most common size ranges for wastewater and sludge, respectively. Rate of removal differed for sizes and shapes of the particles combin...
Citation Formats
E. Kendir, E. Kentel Erdoğan, and F. D. Sanin, “Evaluation of Heavy Metals and Associated Health Risks in a Metropolitan Wastewater Treatment Plant’s Sludge for Its Land Application,” HUMAN AND ECOLOGICAL RISK ASSESSMENT, pp. 1631–1643, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41606.