溶气过程原理、技术特征及其水处理工程应用
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摘要
化工、能源和环保等领域都存在气液混合、反应与分离的不同原理的技术应用,涉及多相混合传质及其反应器的工程/工业化生产需求,其中,溶气过程原理与技术特征对应用技术具有重要支撑作用。综合文献及技术报道,从气泡特征、絮体特征来讨论溶气气浮技术,从传质过程、反应过程与能耗评价方面来讨论废水生物处理好氧技术,从O_3发生与性质、传质与催化过程来讨论生物处理尾水的O_3催化氧化深度净化技术。在回顾原理以及分析技术特征的基础上,结合工程案例总结和讨论了溶气原理的废水处理技术/工程实践的发展与潜力。
Different technical principles of gas-liquid mixing, reaction and separation were existed in the fields of chemical, energy and environmental protection, involving multiphase mixed mass transfer and engineering/industrial production of reactors. Among them, the principles and technical characteristics of gas dissolution process play an important supporting role in the application technology. Based on comprehensive literature and technical reports, this paper discussed dissolved air flotation technology from characteristics of bubble and flocs. Biological aerobic technology was analyzed from the aspects of mass transfer process, reaction process and energy consumption evaluation. Ozone catalytic oxidation technology of biological tail water was studied from ozone generation and properties, mass transfer and catalysis. On the basis of reviewing the principle and analyzing the technical characteristics, this paper summarized and discussed the development and potential of wastewater treatment technology/engineering practice based on gas dissolution principle.
Different technical principles of gas-liquid mixing, reaction and separation were existed in the fields of chemical, energy and environmental protection, involving multiphase mixed mass transfer and engineering/industrial production of reactors. Among them, the principles and technical characteristics of gas dissolution process play an important supporting role in the application technology. Based on comprehensive literature and technical reports, this paper discussed dissolved air flotation technology from characteristics of bubble and flocs. Biological aerobic technology was analyzed from the aspects of mass transfer process, reaction process and energy consumption evaluation. Ozone catalytic oxidation technology of biological tail water was studied from ozone generation and properties, mass transfer and catalysis. On the basis of reviewing the principle and analyzing the technical characteristics, this paper summarized and discussed the development and potential of wastewater treatment technology/engineering practice based on gas dissolution principle.
引文
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