Destruction and restorative of nitrification performance in aqueduct by pre-chlorination

doi:10.3969/j.issn.0438-1157.2013.04.038

CIESC Journal ›› 2013, Vol. 64 ›› Issue (4): 1403-1407.DOI: 10.3969/j.issn.0438-1157.2013.04.038

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Destruction and restorative of nitrification performance in aqueduct by pre-chlorination

ZHAO Lele¹, LI Xing¹, YANG Yanling¹, ZHU Yongjuan¹, LI Guibai²

1. Institute of Architectural Engineering, Beijing University of Technology, Beijing 100124, China;
2. School of Municipal and Environment Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China

Received:2012-07-06 Revised:2012-10-16 Online:2013-04-05 Published:2013-04-05
Supported by:
supported by the National Natural Science Foundation of China(51178003) and the Natural Science Foundation of Beijing(8122013).

预氯化对原水长距离输水管道硝化性能的破坏与恢复

赵乐乐¹, 李星¹, 杨艳玲¹, 朱永娟¹, 李圭白²

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,黑龙江哈尔滨 150090

通讯作者: 李星
作者简介:赵乐乐(1986—),女, 博士研究生。
基金资助:
国家自然科学基金项目(51178003);北京市自然科学基金项目(8122013)。

Abstract

Abstract: The process, that is destruction and recovery of nitrification performance in aqueduct by pre-chlorination, is simulated by a BAR(bio-film annular reactor) with addition of chlorine in different ways.The results showed that pre-chlorination can cause larger damage to the bio-film AOB on pipe, and give significant influence on removal of NH₄⁺-N and NO₂^--N.Higher CT value is,higher growth rate AOB during recovery stage of bio-film.The recovery was quicker for removal performance of NH₄⁺-N (8 d) than for that of NO₂^--N(10 d).Finally, it is found that there has remarkable correlation between amount of AOB and removal rate of NH₄⁺-N in pipe, and their correlation coefficient can reach as high as 92%.

Key words: long distance raw water diversion pipe, bio-film, purification efficiency, recovery efficiency, nitrification

摘要： 采用稳定运行的环状生物膜反应器(bio-films annular reactor,BAR)模拟原水长距离输水管道水质净化过程,以不同投氯方式进行预氯化对原水输水管道硝化性能的破坏与恢复试验研究。结果表明,预氯化对管道生物膜AOB损伤较大,灭活率为4.96log,对NH₄⁺-N、NO₂^--N去除效能影响明显。恢复阶段CT值越高生物膜中AOB恢复生长速率越快。生物膜对NH₄⁺-N去除效能的恢复较NO₂^--N快2 d,NH₄⁺-N、NO₂^--N分别在第8 d和第10 d完成恢复。生膜中AOB数量的恢复与管道对NH₄⁺-N的去除率之间存在明显的相关性,其相关系数可达到92%。

关键词: 长距离原水输水管道, 生物膜, 净水效能, 恢复效能, 硝化作用

CLC Number:

TU991

ZHAO Lele, LI Xing, YANG Yanling, ZHU Yongjuan, LI Guibai. Destruction and restorative of nitrification performance in aqueduct by pre-chlorination[J]. CIESC Journal, 2013, 64(4): 1403-1407.

赵乐乐, 李星, 杨艳玲, 朱永娟, 李圭白. 预氯化对原水长距离输水管道硝化性能的破坏与恢复[J]. 化工学报, 2013, 64(4): 1403-1407.

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Destruction and restorative of nitrification performance in aqueduct by pre-chlorination

预氯化对原水长距离输水管道硝化性能的破坏与恢复

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