溅水充氧生物滤池处理农村生活污水的优化研究  

Research on Optimization of Splashing Oxygenated Biological Filter for Rural Domestic Sewage Treatment

作　　者：李先宁[1] 李孝安[1] 蒋彬[1] 吕锡武[1] 

机构地区：[1]东南大学环境科学与工程系,江苏南京210096

出　　处：《中国给水排水》2007年第23期15-18,23,共5页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2002AA601011-03);江苏省环保厅项目(2005012)

摘　　要：采用由缺氧池和溅水充氧生物滤池组成的一体化地埋式装置处理农村生活污水,考察了对有机物及氮、磷的去除效果,在此基础上重点分析了水力负荷及污染物容积负荷对处理效果的影响,并通过模拟试验探讨了溅水盘构造、设置方式等的优化设计方案。结果表明:装置对COD的平均去除率为57.1%,对NH4+-N的平均去除率为86.4%,对TN的平均去除率达到了70.6%。为了保证良好的处理效果,应使COD容积负荷<0.3 kgCOD/(m3.d),NH4+-N容积负荷<0.08kgNH4+-N/(m3.d),水力负荷<0.6 m3/(m2.h),且硝化液回流比设定为3较合理。在B型溅水盘的间距为30 cm的条件下,设置2层即可取得较好的充氧效果。The integrated buried facility composed of an anoxic tank and a splashing oxygenated biological filter was used to treat rural domestic sewage, tants, nitrogen and phosphorus were investigated. Based and pollutant volumetric loadings on the treatment effect and the removal efficiencies of organic poiluon this, the influence of the hydraulic loading was analyzed mainly. The optimization design schemes of splashing tray structure and setting modes were discussed by a simulation experiment. The results show that the average removal rates of COD, NH4^＋ - N and TN are 57.1%, 86.4% and 70.6% respectively. In order to maximize treatment effect, the COD volumetric loading, NH4^＋ - N volumetric loading and hydraulic loading should be less than 0.3 kgCOD/（ m^3·d）, 0.08 kgNH4^＋ -N/（m^3 · d） and 0.6 m^3/（ m^2 · h） respectively. The rational reflux ratio of nitrified liquid is set at 3. When 2 splashing trays are used and the relative spacing of B-type splashing tray is adjusted to 30 cm, the better oxygenation can be obtained.

关 键 词：溅水充氧生物滤池 农村生活污水 参数优化 有机物 氮 

分 类 号：X703[环境科学与工程—环境工程]