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Enhanced Removal of Heavy Metals in Primary Treatment Using Coagulation and Flocculation
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Water Environment Research
- Article date:
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May 1, 2008
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Copyright informationCopyright Water Environment Federation May 2008. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT:
The goal of this study was to determine the removal efficiencies of chromium, copper, lead, nickel, and zinc from raw wastewater by chemically enhanced primary treatment (CEPT) and to attain a total suspended solids removal goal of 80%. Operating parameters and chemical doses were optimized by bench-scale tests. Locally obtained raw wastewater samples were spiked with heavy metal solutions to obtain representative concentrations of metals in wastewater. Jar tests were conducted to compare the metals removal efficiencies of the chemical treatment options using ferric chloride, alum, and anionic polymer. The results obtained were compared with those from other studies. It was ...
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