지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The bubble size generated in the dissolved air flotation (DAF) process is an important factor in terms of the efficiency of the process. High energy andcosts are required for bubble generation. The average bubble size currently generated in a DAF system is about 30 ㎛. According to experimental results and modeling of the DAF process, the bubble size represents the size range of particles removed. That is, the smaller the bubble size, the smaller the particle sizes that can be removed. In this study, a new bubble generator was developed to generate bubbles of tailored sizes by means of a relatively simple system. The system comprised a pump, which can be used as a recycle pump, and a compressor and a pressure tank to generate the bubbles and also change the amount of air injected into, and the pressure inside, a mixing chamber, to change the bubble size. This system allows for good mixing of air and water in the inner structure of the mixing chamber, and when the pressurized water is rapidly discharged, bubbles with average sizes of up to 20 ㎛ are created.
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