Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Application and Evaluation of High-Density Algae Removal Technology Using Immersion and Pressure Types Tubular Membrane

침지식 및 가압식 관형막을 이용한 고밀도 조류 포집 기술 적용 및 효과 분석

  • Received : 2024.12.04
  • Accepted : 2024.12.20
  • Published : 2024.12.31
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Abstract

In this study, in order to develop an eco-friendly filtration method that considers the health and safety of the aquatic ecosystem by differentiating it from chemical methods(coagulants, oxidants, etc.), which are mainly used as methods for managing the removal of algae in the algal bloom stage, an effective separation membrane for algae removal was reviewed, an appropriate technology was proposed through field application, and the effect of algae removal was evaluated. The membrane used was applied in the field by constructing an optimal technology through auxiliary facilities with an immersion tubular membrane and a pressurized tubular membrane resistant to adhesive pollutants and algae. As a result, the strong characteristics of Fouling (blocking) by adhesive algae were confirmed, and the effect of removing algae and particulate matter in the immersion type tubular membrane was 99% chlorophyll-a (Chl-a), 99.2% suspended solid (SS), and 96.7% of pressurized tubular membranes, showing excellent effects in removing algae and particulate organic matter. In addition, as a result of field application to eutrophic reservoirs where high-density algae are distributed, it was confirmed that stable operation of algae was possible during the process of filtering, separation, and concentration.

본 연구에서는 조류대발생 단계에서 조류의 제거관리를 위한 방법으로 주로 사용하는 화학적 방법(응집제, 산화제 등)과 차별화하여 수생태계 건강성과 안전성을 고려하는 친환경적 여과방법을 개발하기 위해 조류제거에 효과적인 분리막을 검토하고, 현장적용을 통해 적정기술을 제안하고, 조류제거 효과를 평가하였다. 사용한 분리막은 접착성 오염물질과 유해 남조류에 강한 침지식 관형막과 가압식 관형막으로 부대설비를 통해 최적 기술을 구성하여 현장 적용하였다. 그 결과 접착성 조류에 의한 Fouling (막힘)에 강한 특성을 확인하였고, 침지식 관형막의 조류와 입자성 물질 제거 효과는 엽록소-a (Chl-a) 99%, 부유물질(SS) 99.2%, 가압식 관형막은 Chl-a 97.8%, SS 96.7%로 모두 조류 및 입자성 유기물질 제거에 탁월한 효과를 보여주었다. 또한, 고밀도 조류가 분포하는 저수지를 대상으로 현장 적용한 결과 조류의 여과, 분리, 농축 과정에서 안정적 운전이 가능함을 확인하였다.

Keywords

Acknowledgement

본 연구는 한국환경산업기술원 수생태계건강성 확보기술개발사업 과제 (과제명: 저에너지 수면유동 조류포집 및 농업재료활용기술)로 진행되었음에 감사합니다.

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