Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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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)
  • 송창수 (호남대학교 토목환경공학과) ;
  • 오준성 (전남대학교 자원공학과)
  • Published : 2002.09.30
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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.

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