研究论文
王文标,顾国维,刘鸿霞.序批式反应器的水力停留时间的理论探讨[J].环境科学学报,2003,23(4):428-421
序批式反应器的水力停留时间的理论探讨
- Hydraulic retention time of sequencing batch reactor
- 基金项目：
- 作者
- 单位
- 王文标
- 同济大学环境科学与工程学院,上海 200092
- 顾国维
- 同济大学环境科学与工程学院,上海 200092
- 刘鸿霞
- 重庆大学(B区)城市建设与环境工程学院,重庆 400045
- 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25%.
- Abstract：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 (rmax) was exclusively determined by feed rate (λ); and correlated with it positively. Given a typical λ of 0.4,the rmaxreaches 25%.
- Key words：exit-age distribution function stimulus-response experiment variable flow rate sequencing batch reactor hydraulic retention time
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