effect of Bubble Bed Depth on Water Turbidity Removal Using DAF | ||||
| ERJ. Engineering Research Journal | ||||
| Article 12, Volume 25, Issue 3, July 2002, Page 261-267 PDF (628.79 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2002.70924 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Hazem I. Saleh | ||||
| Associate Prof. Civil Eng. Dept., Faculty of Eng., Menoufia Univ., Egyp | ||||
| Abstract | ||||
| Diffused Air Flotation (DAF) has been successfully used for removal of turbidity in water treatment plants through numerous applications. The optimization of the system is dependent of several factors such as coagulant dose, flocculation time, and waterbed depth along the separation zone of the DAF. This paper addresses mainly the effect of bubble bed depth in the separation column on turbidity removal from water. Effects of varying alum coagulant dose from 5 to 45mgll and changing the influent hydraulic loading from 1 to 4 m3/m2ihr on DAF performance were also addressed. Results showed increased efficiency of turbidity removal with the increase of bubble depth in the separation column, as fewer particles were dragged out from the process effluent port situated at the bottom of the tank. The increase in hydraulic loading though beneficial in reducing the required surface area resulted in increased turbidity in the treated effluent. | ||||
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