Journal of Korean Society on Water Environment (한국물환경학회지)
- Volume 18 Issue 3
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- Pages.237-243
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- 2002
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- 2289-0971(pISSN)
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- 2289-098X(eISSN)
The Effect of Salinity on Biological Nutrient Removal in SBR
SBR공정에서 영양염류 제거에 대한 염분의 영향
- Song, Changsoo (Dept. of Civil and Environmental Engineering, Honam University) ;
- Oh, Junseung (Dept. of Resource Engineering, Chonnam University)
- Published : 2002.09.30
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, 24hr, 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.