| Title |
The Effect of Salinity on Biological Nutrient in SBR |
| Authors |
송창수 ( Chang Soo Song ) ; 오준성 ( Jun Seung Oh ) |
| Abstract |
The effect of a salinity on the performance of a biological nutrient removal system was investigated using a model SBR (Sequencing Bach Reactor) system. The system was operated at a 12hr, 18hr, 24h, and 36hr HRT with a salinity level of 20,000mg/L and compared with a system similarly operated with fresh water. The influent salinity level of 8,000 mg/L does not have a significant effect on BOD removal efficiency, there is a noticeable decrease in BOD removal rate from 10,000 mg Cl-/L. The Nitrogen could be removed from the saline wastewater with the same efficiency as for the fresh water because of low C/N ratio in anoxic period. The excess biological phosphorous removal is highly affected by the increase in the influent salinity. The efficiency is decreased from 96.6% to 43.4% when the influent salinity is increased from 0 to 20,000mg/L. |