拔风溅水充氧生物滤池强制自然通风模型  

ESTABLISHMENT ON MODEL OF ENFORCING NATURAL VENTILATION IN NATURAL ENFORCING VENTILATION AND WATER SPATTERING BIOFILTER (NSBF)

作　　者：李孝安[1] 李先宁[2] 王铁风[3] 毛斌[1] 冯一军[1] 

机构地区：[1]杭州市城市规划设计研究院,浙江杭州310012 [2]东南大学环境科学与工程系,江苏南京210096 [3]浙江大学建筑设计研究院,浙江杭州310027

出　　处：《水处理技术》2008年第10期79-81,共3页Technology of Water Treatment

基　　金：国家高技术研究发展计划(863)项目(2002AA601012-1A);江苏省环保厅项目(2005012)

摘　　要：为了解决溅水充氧生物滤池地埋后的自然通风问题,在设计的过程中借鉴了通风空调的自然通风理论,创建了拔风管强制自然通风系统。为了从理论上评价拔风管对生物滤池的强制自然通风效果,建立了拔风管自然强制通风的通风量模型。模型结果表明,装置生物滤池段内的通风量和设置拔风管高度和形式、滤池内外温差而形成的密度差以及滤料层的高度和空隙率有关。同时讨论了如何合理设计拔风管强制自然通风系统的形式,从而满足生物滤池内溶解氧的需求。最后,利用模型得出了试验拔风溅水充氧生物滤池拔风管理论设置高度为3.62m。To solve the problem of natural ventilation after WSTF was buried, theory of natural ventilation originated from architecture was applied in WSTF to enhance natural ventilation. Then natural ventilation system enhanced by air duct was designed on the biofilter. To better theoretically appraise natural ventilation system, model of natural ventilation capability enhanced by air duct through biofilter was established., which shows that natu- ral ventilation capability enhanced by air duct is linked with height and form of air duct, difference in temperature inside and outside biofilter and height and voidage of media in biofilter. Meanwhile a method about how to reasonably devise natural ventilation system air duct is discussed to meet the demand of DO in biofilter. Finally theoretical height of WSTF, which is 3.62 m, is calculated through model of Enforcing Natural Ventilation.

关 键 词：生物滤池 拔风管 强化 自然通风 模型 

分 类 号：X703.3[环境科学与工程—环境工程]