- Volume 20 Issue 2
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Efficiency of a hybrid solid digestion-denitrification column in suspended solid and nitrate removal from recirculating aquaculture system
- Pungrasmi, Wiboonluk (Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University) ;
- Chaisri, Ratchadaporn (Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University) ;
- Malaphol, Ekachai (Center of Excellence for Marine Biotechnology, Department of Marine Science, Faculty of Science, Chulalongkorn University) ;
- Powtongsook, Sorawit (Center of Excellence for Marine Biotechnology, Department of Marine Science, Faculty of Science, Chulalongkorn University)
- Received : 2014.07.21
- Accepted : 2015.04.28
- Published : 2015.06.30
This research focused on the solid and nitrate removal efficiency in a solid digestion-denitrification column. The 20 L up-flow column consisted of 18 L acrylic column with 2 L down-comer inlet tube located in the middle. In the first part, the wastewater with high suspended solids from the Tilapia fish tank was applied into the sedimentation unit at 5 variable flow rates i.e., 11.25, 25.71, 60, 105.88 and 360 L/h. The results indicated that the flow rate of 11.25 L/h (0.57 m/h) gave the highest solid removal efficiency of
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