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Title |
Development of Cooling Water Circulation System for Environmentally Friendly Diamond-Grinding Method
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Authors |
심소현(Sohyun Shim) ; 김률리(Ryulri Kim) ; 홍진영(Jinyoung Hong) ; 최하진(Hajin Choi) ; 정시영(Si-Young Jung) |
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DOI |
https://doi.org/10.4334/JKCI.2021.33.3.263 |
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Keywords |
마이크로 그라인딩 공법; 절삭수 순환; 친환경 공법; 그루빙; 콘크리트 도로 포장 micro-grinding method; coolant circulation; eco-friendly; grooving; concrete pavement |
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Abstract |
We propose a cooling water circulation system for diamond grinding in order to reduce environmental pollution generated by conventional grinding methods. Conventional grinding normally uses 3,000~4,500 kg of cooling water per 200 m2, leading to contaminated water leakage and delays to construction due to exceeding the contaminated water collection storage limit. In our proposed method, the contaminated water generated by the cutting process is immediately collected on site, and the water can be recycled as cooling water through the processes of filtration, treatment, and circulation. The developed system is composed of a primary purification device capable of filtering concrete sludge, a secondary purification device that stores and circulates purified water, and a micro grinder. In order to evaluate its performance, the developed system was applied five times in a field test, and comparison was made with a conventional method. Specifically, the water quality, cutting oil consumption, and carbon footprint were analyzed. It was confirmed that the generated contaminated water can be treated as industrial water grade and that the amount of cutting oil used and carbon dioxide emissions can be reduced by 90 % or more compared with the conventional method.
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