Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Characteristics of Foam Generation in Freshwater and Seawater

담수와 해수에서의 포말 생성 특성

  • SHIN Jeong-Sik (Division of Chemical Engineering, Pukyong National University) ;
  • KIM Byong-Jin (Busan Bio Industry Support Center (BISC)) ;
  • SUH Kuen-Hack (Division of Chemical Engineering, Pukyong National University)
  • 신정식 (부경대학교 화학공학과) ;
  • 김병진 (부산바이오기업지원센터) ;
  • 서근학 (부경대학교 화학공학과)
  • Published : 2004.06.01
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Abstract

The characteristics of foam generation were assessed for freshwater and seawater using a foam generator. Both in freshwater and seawater, the height of the foam layer increased with initial protein concentrations. The height of the foam layer also increased with pore size of the air distributor. The optimum superficial air velocities (SAV) in freshwater and seawater were 0.84 cm/sec and 0.6 cm/sec, respectively. The height of the foam layer was the highest in pH 3 in freshwater and in the region of pH 5-7 in seawater. The height of the foam layer increased with $NaHCO_3$ concentration in freshwater, and $NaHCO_3$ concentration had little effect in seawater. Removal efficiencies of total suspended solid (TSS) and turbidity decreased with an increase of initial protein concentrations in a batch foam separator both in freshwater and seawater.

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