摘要
根据液龄分布函数是二元函数的观点 ,推导出了当进、出水流量是时间的函数时 ,反应器的水力停留时间的通用积分式和离散式 ;然后得出了序批式反应器 (SBR)的水力停留时间 (HRT)具体表达式 ,并分析了用现有方法计算其水力停留时间所产生的误差 .结果表明 ,最大相对误差rmax仅与充水比λ有关 ,且呈正相关关系 .取典型值λ =0 4时 ,rmax高达 2 5 % .
Based on the dualistic EDF(Exit\|age Distribution Function), the general integral and disperse equations of a reactor's HRT(Hydraulic Retention Time) were concluded when inflow and outflow rates are functions of time. The specific formula for HRT of SBR(Sequencing Batch Reactor) was inferred, and the error of currently calculated HRT was analyzed. The result showed that maximum relative error ( r max ) was exclusively determined by feed rate ( λ ); and correlated with it positively. Given a typical λ of 0 4,the r max reaches 25%.
出处
《环境科学学报》
CAS
CSCD
北大核心
2003年第4期428-431,共4页
Acta Scientiae Circumstantiae
关键词
序批式反应器
水力停留时间
液龄分布函数
相对误差
废水处理
exit\|age distribution function
stimulus\|response experiment
variable flow rate
sequencing batch reactor
hydraulic retention time
