地埋式一体化溅水充氧生物滤池的充氧效果研究  

Study on Oxygenation Effect of Buried Integrated Splash Oxygenation Biofilter

作　　者：金秋[1] 曹大伟 李伟[3] 吴磊[3] 李先宁[3] 

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]无锡市惠山区给排水管理处,江苏无锡214174 [3]东南大学环境工程系,江苏南京210096

出　　处：《中国给水排水》2011年第5期16-19,共4页China Water & Wastewater

基　　金：江苏省科技支撑计划项目(BE2008408);水利部948项目(200909)

摘　　要：地埋式一体化溅水充氧生物滤池是根据农村地区的经济状况和生活污水排放特征开发的高效处理装置。其核心处理单元——生物滤池采用自然通风,因而充氧效果如何将直接关系到整个系统的净化效率。为此,以农村生活污水为处理对象,考察了溅水盘设置、水力负荷及温度对地埋式一体化生物滤池溅水充氧效果的影响。研究表明,充氧效果主要在第一级溅水盘获得;当水力负荷为5.33 m3/(m2.d)、溅水盘间距为15 cm时,溅水盘的充氧效果最佳;生物滤池内部的DO浓度随温度的降低而上升,在冬、夏两季均稳定充足(DO>5.0 mg/L)。采用两级溅水的充氧方式,能够满足生物滤池内部微生物对氧气的需求。Buried integrated splash oxygenation biofilter （BISOB） is a high-efficiency treatment device developed based on economic conditions and discharge features of domestic sewage in rural areas. Because of natural ventilation, the purification efficiency of the system is related to oxygenation. There- fore, taking rural domestic sewage as treatment object, the influences of splash pan placement, hydraulic load and temperature on splash oxygenation effect of BISOB were investigated. The results indicate that the oxygenation effect is mainly achieved in the first-stage splash pan, and the optimal oxygenation effect can be obtained when the hydraulic load is 5.33 m^3/（m^2 ·d） and the space between splash pans is 15 era. The concentration of dissolved oxygen in biofilter is increased with the decrease of temperature, and it stable and enough （more than 5.0 mg/L） both in summer and winter. The oxygenation by tw0-stage splash can meet the oxygen demand of microorganisms in biofilter.

关 键 词：农村生活污水 生物滤池 地埋式 拔风溅水充氧 

分 类 号：X703[环境科学与工程—环境工程]