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The effects of flushing on water quality and biofilm biomass in different daily flow patterns of distribution system

  • Ze Bing Zhu
  • , Chen Guang Wu
  • , Dan Zhong*
  • , Yi Xing Yuan
  • , Li Li Shan
  • , Jie Zhang
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We studied the effects of flushing on water quality and biofilm biomass in different daily flow patterns of distribution system. After building up steady biofilm layers in two flow velocity (0.25 m/s and 0.65 m/s) distribution systems consisting of PE pipe, then flushed by stepwise increased flow velocity. An increase flow velocity caused an immediate increase in turbidity and heterotrophic bacteria of water as a result of detachment of biofilms in the pipes, especially in low flow patterns distribution system. Three days later after flushing, water quality of two systems were generally lower and more stable than before flushing. Flushing strategies only limited biofilm growth to a certain extent and did not completely eliminate microorganisms from the systems. The low flow velocity distribution system was easily being disturbed by flushing.

Original languageEnglish
Title of host publicationMaterials, Transportation and Environmental Engineering II
EditorsJimmy C.M. Kao, Wen-Pei Sung, Ran Chen
PublisherTrans Tech Publications Ltd
Pages330-333
Number of pages4
ISBN (Electronic)9783038352488
DOIs
StatePublished - 2014
Event2nd International Conference on Materials, Transportation and Environmental Engineering, CMTEE 2014 - Kunming, China
Duration: 30 Jul 201431 Jul 2014

Publication series

NameAdvanced Materials Research
Volume1030-1032
ISSN (Print)1022-6680
ISSN (Electronic)1662-8985

Conference

Conference2nd International Conference on Materials, Transportation and Environmental Engineering, CMTEE 2014
Country/TerritoryChina
CityKunming
Period30/07/1431/07/14

Keywords

  • Biofilm
  • Flow velocity
  • Flushing
  • Water distribution system
  • Water quality

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