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溶解氧对好氧颗粒污泥影响的研究进展
引用本文:陈寰.溶解氧对好氧颗粒污泥影响的研究进展[J].四川环境,2010,29(2):109-112.
作者姓名:陈寰
作者单位:北京大学深圳研究生院环境与能源学院,城市人居环境科学与技术重点实验室,深圳,518055
摘    要:好氧颗粒污泥技术是一种新颖废水处理技术。溶解氧(DO)是好氧颗粒污泥形成和稳定运行的一个重要参数。好氧颗粒污泥需要的曝气量大,能耗高。高曝气量带来的高DO浓度不利于氨氮通过SND去除。当DO扩散在颗粒内部受到限制时,颗粒中心形成的厌氧层不利于颗粒污泥的长期稳定运行。本文系统分析了DO浓度对好氧颗粒污泥影响的国内外研究现状,对好氧颗粒污泥中DO浓度这一重要参数的研究进行了总结。研究在低DO浓度下保持好氧颗粒污泥的稳定性有利于降低运行成本,采取合适的方法降低颗粒内部的扩散限制有利于增强颗粒的稳定性能。

关 键 词:好氧颗粒污泥  溶解氧  曝气量  硝化反硝化  扩散限制

Progress in Effect of Dissolved Oxygen on the Aerobic Granular Sludge
CHEN Huan.Progress in Effect of Dissolved Oxygen on the Aerobic Granular Sludge[J].Sichuan Environment,2010,29(2):109-112.
Authors:CHEN Huan
Institution:CHEN Huan(Key Laboratory for Urban Habitat Environmental Science & Technology,School of Environment & Energy,Peking University Shenzhen Graduate School,Shenzhen 518055,China)
Abstract:Aerobic granulation is a novel technology of wastewater treatment.The dissolved oxygen(DO) is an important operational parameter affecting the formation of sludge granules and stable operation of the aerobic system.High aeration rate needed in aerobic granules system results in high energy consumption.While the high DO content introduced by high aeration rate is not in favor of the ammonia nitrogen removal through SND.When DO is limited in the intra of a granule,the anaerobic layer formed at the center is n...
Keywords:Aerobic granular sludge  dissolved oxygen  aeration rate  simultaneous nitrification and denitrification  mass transfer resistance  
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