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논문 기본 정보

자료유형
학술저널
저자정보
전수지 (제이씨앤엠 기술연구소) 조세현 (제이씨앤엠 기술영업부) 김태근 (제이씨앤엠 기술연구소)
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한국수처리학회 한국수처리학회지 한국수처리학회지 제29권 제1호
발행연도
2021.1
수록면
19 - 24 (6page)

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초록· 키워드

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In many industrial plants, foaming at liquid surfaces can reduce process efficiency and cause environmental problems with waste discharge. In most industrial sites, such as wastewater treatment plants, it is necessary to remove foam to improve water quality and process efficiency. The formation of persistent foams can be a critical problem in wastewater treatment since it can lead to operational issues and reduce the overall system performance. For basic research for the development of new defoamers, we tested defoamers for wastewater treatment. A 50% (v/v) water-dispersible foaming liquid was prepared using a foaming agent-A. Two types of defoaming agents were tested: silicone emulsion anti-foaming agents, B and C, and non-silicone oil anti-foaming agents, corn oil and mineral oil. The defoaming properties of these substances were tested as a function of pH, defoamer concentration, viscosity of defoamer dispersion, and defoamer storage period. At a pH of 3, 5, and 7, the defoaming by the silicone oil emulsion and non-silicone oil was greater than 80% effective. The foam quantity (L/min) of the silicone-based defoamer was lower even at lower concentrations than the non-silicone corn oil and mineral oil. At lower pH, the viscosity of the defoamer dispersions was slightly higher. We observed little difference in defoaming capacity after 30 days of storage.

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