预氯化对输水管道净水效能影响及恢复研究  

Destruction and restorative of purification efficiency in diversion pipe by prechlorination

作　　者：赵乐乐[1] 李星[1] 杨艳玲[1] 朱永娟[1] 李圭白[2] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2013年第10期106-110,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(51178003);北京市自然科学基金资助项目(8122013)

摘　　要：为保障原水输水过程中水质安全性,采用生物膜环状反应器(BAR,Biofilms Annular Reactor)考察预氯化对管道生物膜净水效能的影响及其性能恢复过程.结果表明,管道预氯化后,对管道生物膜损伤较大,影响NH4+-N、NO2--N、COD Mn、TP去除效果;出水出现短暂的COD Mn和TP质量浓度上升、NO2--N积累现象,出水NO2--N最大积累量可达7倍.冲击实验后稳定运行阶段,生物膜对NH4+-N去除效能恢复时间较NO2--N快2 d,NH4+-N、NO2--N分别在第8天和第10天完成恢复;稳定运行至第8天,管壁生物膜完成对COD Mn和TP去除效能的恢复.To ensure the safety of water in the process of translation in long distance raw water diversion pipe, the damagemant and recovery of purification by added chlorine to Biofilms Annular Reactor （BAR） which simulated the pipe was investigated. The results showed that the prechlorination can damage the pipe bioflim, lower the removal rate of NH4 ＋ - N, NO2 - N, CODM,I, TP, and the effluent of concentration of CODn,,and TP was elevated in short term and NO2 - - N concentration was rised in long term after prechlorination. The effluent concentration of NO2 - N can be reached 7 times of the influent. The recoveiT of removal of NH4 ＋ - N was earlier 2 days than that of NO2 - - N, and NH4 ＋ - N and NO2 - - N could be completely repaired on 8 dsys and 10 days, respectively. The removal of CODMn and TP can be completely repaired on 8 days.

关 键 词：原水输水管道 生物膜 净水效能 效能恢复 预氯化 生物膜环状反应器 

分 类 号：TU991[建筑科学—市政工程]