Evaluating the role of industrial sludge as a source of heavy metal pollution

Salehi, Ansareh and Mirghaffari, N. and Koohnejad, H. and Mahmoudi, F. (2013) Evaluating the role of industrial sludge as a source of heavy metal pollution. Feyz Journal of Kashan University of Medical Sciences, 16.

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Official URL: http://feyz.kaums.ac.ir/article-1-1826-en.html


Background: Considering a water shortage crisis, wastewater treatment is essential. One of the most widely used methods of sewage treatment is the activated sludge method. Using this method in wastewater treatment plants produced a lot of sludge. Due to the fertility properties of sludge and its use in agriculture, land reclamation, silviculture and the existence of some heavy metals in sludge and their adverse effects on the soil, groundwater, plants and human beings, evaluation of the heavy metals concentrations is needed. Materials and Methods: In this study, the concentrations of heavy metals in sludge of wastewater treatment unit in Kaveh industrial city were investigated. Concentrations of Zinc, Chromium, Cadmium, Nickel, Iron, Copper, Lead, Manganese, and Arsenic in the sludge of both the secondary settling tank and thickening tank were determined. Results: Concentrations of heavy metals were compared with the standard regulations, 40CFR Part 503 environmental protection agency regulations, to determine the levels of these elements and the results showed that the concentration of Lead was higher than the standard limit. Conclusion: The high lead levels in sludge restrict its use as a fertilizer for agriculture.

Item Type: Article
Subjects: Environmental Science
Divisions: Feyz journal
Depositing User: ART . editor
Date Deposited: 09 May 2017 12:46
Last Modified: 30 May 2017 14:54
URI: http://eprints.kaums.ac.ir/id/eprint/1789

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