한국환경과학회지 제27권 제11호 (p.1059-1072)

|ORIGINAL ARTICLE|
Chlorella vulgaris를 이용한 양돈폐수 내 영양염류 및 중금속 제거

Removal of Nutrients and Heavy Metals from Swine Wastewater using Chlorella vulgaris
키워드 :
Chlorella vulgaris,Heavy metals,Nutrients,Phytoremediation,Swine wastewater

목차

Abstract
1. 서 론
2. 재료 및 방법
  2.1. 실험재료
  2.2. 축산폐수의 선정
  2.3 인공폐수의 처리
  2.4. 미세조류 배양
  2.5. 미세조류의 생육도 측정
  2.6. 수질분석
  2.7. 통계분석
3. 결과 및 고찰
  3.1. Chlorella vulgaris의 최적 배양조건 확립
  3.2. Chlorella vulgaris의 성장에 미치는 영양염류의영향 및 제거율
  3.3. Chlorella vulgaris의 성장에 미치는 중금속의영향 및 제거율
  3.4 양돈폐수 내 Chlorella vulgaris의 성장 및 오염원제거 효과
4. 결 론
REFERENCES

초록

Bioremediation has been recognized as a suitable alternative to conventional methods of removing contaminants, and it uses fungi, bacteria and microalgae. In contrast to other organisms, microalgae are unique in that they have the ability to perform photosynthesis like plants and to utilize organic/inorganic carbon substrates, in a process called phytoremediation. Microalgae can populate a reaction site rapidly and enhance the bioremediation efficiency. In this study, Chlorella vulgaris was used to evaluate the removal potentials of the nutrients (N and P) and heavy metals (Cu and Zn) from swine wastewater. The optimum growth conditions for Chlorella vulgaris and the removal potentials of N, P, Cu, and Zn from synthetic wastewater using Chlorella vulgaris were investigated. Based on the results, the applicability of this microalga to on-site wastewater treatment was examined. Optimal growth conditions for Chlorella vulgaris were established to be 28℃, a pH of 7, and light and dark cycles of 14:10 h. As the concentrations of the nutrients were increased, the efficiencies of N and P removal efficiencies by Chlorella vulgaris were decreased in the single and binary mixed treatments of the nutrients, respectively. Further, the efficiencies of Cu and Zn removal also decreased as the heavy metals concentrations added were increased, both in the single and binary mixed treatments. In addition, the efficiency of Cu removal was higher than that of Zn removal. Our results indicate that Chlorella vulgaris could be used in treatment plants for the removal of nutrients and heavy metals from swine wastewater.