Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Sludge solubilization using sono-activated persulfate

활성 과황산염을 이용한 슬러지 가용화

  • Moon, Sang-Jae (School of Civil & Environmental Engineering, Hankyong National University) ;
  • Nam, Se-Yong (School of Civil & Environmental Engineering, Hankyong National University)
  • 문상재 (국립한경대학교 건설환경공학부) ;
  • 남세용 (국립한경대학교 건설환경공학부)
  • Received : 2021.09.10
  • Accepted : 2021.09.16
  • Published : 2021.09.30
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Abstract

In order to investigate the degree of solubilization of sewage sludge using sono-activated persulfate(UV/PP), VSS reduction rate, solubilization rate and extracellular polymeric substances were measured. Ultrasonic(US) and alkali·ultrasonic method using sodium hydroxide(US/SH) were compared. Under the persulfate·ultrasonic conditions, the VSS reduction rate and the solubilization rate increased to 27.6% and 58.9%, respectively. TB-EPS as Carbohydrate and Protein were extracted by 770 mg/L and 2,162 mg/L. Compared to the other methods, US and US/SH, the VSS reduction rate and solubilization rate were higher. And also, according to the TB-EPS values, cell wall destruction was more efficient.

초음파로 활성화된 과황산염을 이용한 슬러지의 가용화 정도를 확인하기 위하여 VSS 감량화율, 가용화율 및 체외고분자물질을 주요 지표로 측정하여 초음파 및 수산화나트륨을 이용한 알칼리·초음파 방법과 비교하였다. 과황산염·초음파 조건에서 VSS 감량화율은 27.6%, 가용화율은 58.9%로 증가하였고, TB-EPS as Carbohydrate와 Protein은 각각 770 mg/L, 2,162 mg/L 용출되었다. 초음파 및 알칼리·초음파 방법에 비하여 VSS감량화율 및 가용화율이 높았으며, TB-EPS지표로 볼 때 세포의 파괴 및 용출에서도 과황산염·초음파 조건에서 더 효율적이었다.

Keywords

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