Background and purpose: Disposal of sludge from industrial wastewater treatment plants (IWWTPs) is a serious issue because it can affect human and animals' health, and also environmental quality. In this study, sludge from a petrochemical wastewater treatment plant was analyzed regarding its physicochemical characteristics and disposal options. Materials and Methods: Grab sampling was used to collect 12 sludge samples biweekly (May-October 2012). One sample T-test was applied to analyze the obtained data. Canadian Soil Quality Guidelines (CSQG) and New Jersey Department of Environmental Protection Soil Cleanup Criteria (NJDEPSCC) were used to discuss the disposal fate of the generated sludge.
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Ahmadi et al. (2013) studied this question.
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