| Title |
Nitrifying Characteristics of Upflow Biofilm Processes in Recirculating Aquaculture System |
| Authors |
오선경 ; 김정숙 ; 강임석 ; 이병헌 ( Sun Kyoung Oh ; Jeong Sook Kim ; Im Suk Kang ; Byung Hun Lee ) |
| Abstract |
The purpose of this study was to investigate the efficiency of water treatment processes using the biofilm in recirculating aquaculture system, to find out the optimum treatment conditions for ammonia removing in recirculating water, and to estimate possibility of reduction the water treatment unit volume in the aquaculture system as maintaining an efficient treatment process. The upflow biofilm process was equipped with two different types of media, such as Saran media and Ceramic media. This study scaled down to the 20% of the original water treatment unit volume, was compared biofilm process using Saran media with using Ceramic media over conditions of 10 cycle and 20 cycle ratio. The experimental results showed that upflow biofilm process using the Ceramic media was appeared to be better for organic removal, whereas, the biofilm process with Saran media was found to be better for ammonia removal. The biofilm process with the Saran media showed above 90% ammonia removal efficiency. When the volume ratio of recirculating water treatment unit to rearing unit was scaled down to the 20% of the original ratio, the ammonia removal efficiency could be maintained to be similar. Therefore, it can be suggested that the treatment unit of the aquaculture recirculating system can be reduced if the upflow biofilm process with the Saran media is used. |