Abstract
Mixing the wastewater of industries with natural water has caused environmental pollution, so researcher try to obtain methods and optimum conditions for wastewater treatment. One of important stage in wastewater treatment is dissolved air flotation .DAF is used for the removal of suspended solids and oils from wastewater. In this paper, the effect of several parameters on flotation efficiency with Cationic Polyacrylamide as flocculants, was examined, namely, (a) concentration of cationic flocculants, (b) pH (c) fast mixing time, (d) fast mixing speed,(e) slow mixing time,(f) retention time and temperature. After design of experiment, in each trial turbidity of wastewater was measured by spectrophotometer. Results show that contribution of pH and concentration of flocculants on flotation efficiency are 75% and 9% respectively. Cationic Polyacrylamide led to a significant increase in the settling speed and effect of temperature is negligible. In the optimum condition, the outcome of the DAF unit is increased and amount of suspended solid and oil in wastewater is decreased effectively.
| Original language | English |
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| Title of host publication | CHISA 2006 - 17th International Congress of Chemical and Process Engineering |
| Publication status | Published - 1 Dec 2006 |
| Externally published | Yes |
| Event | International Congress of Chemical and Process Engineering 2006 - Prague, Czechia Duration: 27 Aug 2006 → 31 Aug 2006 Conference number: 17th http://www.chisa.cz/2006/ |
Conference
| Conference | International Congress of Chemical and Process Engineering 2006 |
|---|---|
| Abbreviated title | CHISA 2006 |
| Country/Territory | Czechia |
| City | Prague |
| Period | 27/08/06 → 31/08/06 |
| Internet address |
