Characteristics and Disposal Options of Sludges from an Oil Refinery Wastewater Treatment Plant in Iran, 2013
Journal Title: Archives of Hygiene Sciences - Year 2016, Vol 5, Issue 1
Abstract
Background & Aims of the Study: Industrial wastewater sludges must be disposed in a safe way because they have hazardous effects on the human and environment. The aim of this study is to investigate the physicochemical characteristics and disposal options of sludges from oil-water separator (OWS) and dissolved air flotation (DAF) clarifier of a Refinery wastewater treatment plant. Materials & Methods: Sludge samples were collected in grab sampling manner, in 6 month (April-September 2013) in order to be analyzed for their physicochemical characteristics. Kolmogorov-Smirnov Z, independent t-test, Mann-Whitney U test, one sample t-test and Wilcoxon signed rank test were used for statistical analysis. Canadian Soil Quality Guidelines (CSQG) and Florida Department of Environmental Protection Soil Cleanup Target Levels (FDEPSCTLs) were used to discuss the disposal fate of the generated sludge. Results: As, Cd, Cu, Pb and Se were not detected in the studied sludge. As compared with CSQG, the investigated sludge were polluted for residential/parkland, agricultural, commercial and industrial applications, because they contained high concentrations of Cr, Ni and Zn. Also, according to FDEPSCTLs, the studied sludges were not suitable for residential and non-residential applications due to their high Al and Ni contents. DAF sludge had a high Zn concentration for residential application, too. Conclusions: present sludge management in the studied plant needs to be revised because metals’ concentrations are above the international standards and guidelines.
Authors and Affiliations
Mehdi Ahmadi, Zahra Tamimi, Nemat Jaafarzadeh, Pari Teymouri, Rohangiz Maleki
Keywords
Related Articles
- EP ID EP469851
- DOI -
- Views 132
- Downloads 0
Evaluation of Lead and Cadmium Levels of Iranian and Imported Rice in Kermanshah, 2016 (Iran)
Background & Aims of the Study: One concern of human is heavy metals pollution of food products such as rice. It is a fact that rice is one of the most consumed items in the diet of Iranian people. This study was conduct...
Chromium, Nickel and Manganese in the Groundwater Resources of Asadabad Plain, Iran
Background & Aims of the Study: Heavy metals are one of the most important environmental pollutants which agricultural and industrial activities and urban development increased their entry rate to the underground resourc...
Water Quality Pollution Indices to Assess the Heavy Metal Contamination, Case Study: Groundwater Resources of Asadabad Plain In 2012
Background & Aims of the Study: Due to the increasing pollution of water resources, tow documented methods: the Heavy metal potential index (HPI) and the Heavy metal evaluation index (HEI) were evaluated for their suitab...
Microbiological Quality of Drinking Water in Rural Areas of a City
Background & Aims of the Study: Lack of access to safe drinking water can lead to undesirable aesthetic problems and adverse health effects such as infectious diseases. The aim of this study was to investigate the micro...
Quality of Flour Types, in the Bakeries of Hamedan, Iran during 2015-2016
Background & Aims of the Study: Wheat flour makes the basic component of bread. Thus, evaluating its quality plays an important role in public health. This paper focused on the physicochemical and microbial analysis of a...