侧向流曝气生物滤池的工作性能与滤池长度的关系  

Performance of a lateral flow biological aerated filter

作　　者：张红晶[1] 龙腾锐[2] 何强[2] 曹艳晓[2] 

机构地区：[1]重庆大学化学化工学院,重庆400045 [2]重庆大学城市建设与环境工程学院,重庆400045

出　　处：《环境污染与防治》2006年第12期904-907,共4页Environmental Pollution & Control

基　　金：国家科技部"十五"攻关项目(No.2001BA604A-01)。

摘　　要：研究了侧向流曝气生物滤池工作时COD、SS、氨氮和TN随滤池长度变化的关系。结果表明：（1）SS的去除主要集中在滤池前部0～1．42m段；（2）对COD的去除，A段（0．56～2．08m）起了主要作用，B段（2．78～4．66m）弥补A段的COD去除效果；（3）氨氮的去除主要发生在2．53m以后，B段承担了去除氨氮的主要作用。The unique lateral flow biological aerated filter was developed for treatment of settled sewage. The bioreaetor performed well for more than 100 days during two test periods; the operating conditions were： plug flow velocity = 0.45 ＆ 0. 73 m/h, HRT = 9.33 ＆ 5.47 h, T = 18.2-23.6 ＆ 10.1-17.5 ℃, air/liquid feed ratio= 5 ＆ 1, average influent COD = 218.37 ＆ 300. 14 mg/L, SS： 128. 18 ＆ 153.09 mg/L, and NH^＋ N=30.09 33.25 mg/L, respectively for the first and second test periods. Samples were taken along the flow path to monitor the treatment effectiveness at various sections of the reactor. Most of the influent COD and SS were removed in the early treatment zone while most NH4^＋ -N was removed in the latter stage. The treatment was more effective during the lower loading and warmer first periodl the average removal rates for COD, SS and NH4^＋ N were 86.87%＆ 77.28%, 97.04%＆ 91.15%, 77.78%＆ 53.91%, respectively.

关 键 词：侧向流曝气生物滤池 城市污水 工作性能 

分 类 号：X703[环境科学与工程—环境工程]