Preliminary evaluation of the performance of new pre-polymerised inorganic coagulants for lowland surface water treatment |
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| Affiliation: | 1. Department of Comprehensive Cancer Care and Faculty of Medicine, Masaryk Memorial Cancer Institute and Masaryk University, Brno, Czech Republic;2. Institute of Biostatistics and Analyses, Faculty of Medcine, Masaryk University, Brno, Czech Republic;3. Department of Urologic Oncology, Masaryk Memorial Cancer Institute and Masaryk University, Brno, Czech Republic;4. Department of Oncology, Palacky University Medical School and Teaching Hospital, Olomouc, Czech Republic;5. Department of Oncology, University Hospital, Pilsen, Czech Republic;6. University Hospital in Hradec Králové, Hradec Králové, Czech Republic;7. Department of Oncology, Motol University Hospital and Charles University Second Faculty of Medicine, Prague, Czech Republic;8. Department of Oncology, General University Hospital and Charles University First Faculty of Medicine, Prague, Czech Republic;9. Department of Oncology, First Faculty of Medicine, Thomayer University Hospital and Charles University, Prague, Czech Republic;1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;2. Key Laboratory for Microorganisms and Functional Molecules, College of Life Science, Henan Normal University, Xinxiang, Henan 453007, China;3. Genetics Department, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt |
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| Abstract: | This paper is concerned with the performance of relatively new kinds of pre-polymerised inorganic coagulants, poly-alumino-iron-sulphate (PAFS) and polyferric sulphate (PFS). Laboratory experiments were undertaken to evaluate the PAFS and PFS, in comparison with conventional coagulants such as ferric sulphate (FS) and aluminium sulphate (AS), for the coagulation of algal-type model waters and a lowland surface water containing algae and natural organic matter (NOM). Experimental results demonstrated that under the conditions studied, the performance of pre-polymerised coagulants were consistently superior to conventional coagulants (i.e., FS and AS). This is attributed to the presence of a range of pre-formed polymerised species. The coagulation mechanism of PAFS and PFS has been discussed in the paper. |
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