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COMPARATIVE STUDY BETWEEN FLOCCULATION-COAGULATION PROCESSESIN RAW/WASTEWATER TREATMENT

Published in AgroLife Scientific Journal, Volume 8, Number 1
Written by Loredana LITU, Gabriela CIOBANU, Sorin Mihai CÎMPEANU, Olga KOTOVA, Ramona CIOCINTA, Daniel BUCUR, Maria HARJA

In this study is present the advantages and disadvantages of the use of different type of coagulants and flocculants for industrial wastewater treatment. This paper details how to survey and select appropriate reagents permit resolve of many problems appear in wastewater treatment. It is designed to be used as a study to learn about the operation of flocculation-coagulation process. The industrial wastewater can be regards as black box where mechanical operational-chemical operation are interconnected. Troubleshooting problems in primary system have direct influence over secondary systems (heavy metal removal, emulsion breaking, sludge thickening, dewatering etc.). To reduce the harmful effects that wastewater can produce, some form of treatment is necessary environmentally friendly, with minimize energy consumption. The relationship between water and energy and necessity for better managing energy consumption continues to have a great attention in raw water and wastewater treatment plants. The use of electricity and different reagents for water and wastewater treatment, impose unitary analysis. Appling unitary practice, function of the kind of wastewater treatment plant, will be possible to adopt the best solution considering all processes that concur to obtain a clean water. The aim of this study was analysis of characteristics of flocculants and coagulants, that can be used in wastewater treatment, for establish the application conditions.

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