Na 및 Ca 이온이 미생물의 부착에 미치는 영향

• 영문명: Effect of Na and Ca Ion on the Microorganism Attachment
• 발행기관: 한국환경보건학회
• 저자명: 박영식(Young Seek Park) 서정호(Jung Ho Suh) 이창한(Chang Han Lee) 안갑환(Kah Hwan Ahn) 송승구(Seung Koo Song)
• 간행물 정보: 『1. 한국환경보건학회지』제25권 제1호, 78~82쪽, 전체 5쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 1999.03.30

영문 초록

This paper discussed the effect of metal ion(Na^+, Ca^2+) on the microorganism attachment and characteristics of activated sludge in order to facilitate attachment in support carrier. When 0.5meq. Na^+ was added in activated sludge, attached microorganisms were increased 1.5 times(27.0 × 10 exp(7) CFU/㎠), as compared with no Na^+(18.1 x 10 exp(7) CFU/㎠) added. But attached microorganism was slowly decreased as the Na^+ concentration is more increased. In case of Ca^2+ added, maximum amounts of microorganism were reached 40.1 × 10 exp(7) CFU/㎠, and increased 2.3 times more than no Ca^2+ added. Zeta potential of activated sludge was -9.65 mV. As Na^+ and Ca^2+ was added into an activated sludge, isoelectric point were reached at the concentration of 0.5 meq. Metal ion addition caused hydrophobicity of activated sludge to increase. Amounts of extracellular polymeric substances of activated sludge were increased with Ca^2+ addition, but Na^+ addition did not influenced the formation of extracellular polymeric substances. The removal efficiency of TOC was not affected with metal ion addition.

목차

I. 서론

II. 이론적 고찰

III. 실험재료 및 방법

IV. 결과 및 고찰

V. 결론

키워드

Metal ion addition Microorganism attachment Zeta potential Hydrophobicity Extracellular polymeric substances