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Study on the startup characteristics of the methanogenic UASB reactor under acid condition at pH5.5

  • Bao Wang
  • , Jie Ding*
  • , Hong Jian Liu
  • , Chun Miao Liu
  • , Wang Bin Cheng
  • , Lu Yan Zhang
  • , Xian Shu Liu
  • , Nan Qi Ren
  • *Corresponding author for this work

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

Abstract

The reactor was started up under the neutral condition. The pH value in the reactor was gradually lowered down. At pH 7.0, the average COD removal efficiency the biogas yield and the methane content of the UASB reactor were steady at 93% above, 25L·d-1 and 54%, respectively. During the period of the pH value lowered from 7.0 to 5.5, the average of the COD removal efficiency, the biogas yield and the methane content of the UASB reactor were 83.1%, 19.6L/d and 47.7%, respectively. At pH 5.5, the operating condition of UASB reactor began to recover from the 76th day, and on the 84th day, the COD removal efficiency, biogas yield and the methane content recovered to 80.5%, 17.1L/d and 47.9%, respectively.

Original languageEnglish
Title of host publicationAdvanced Research on Material Engineering, Chemistry and Environment
Pages695-700
Number of pages6
DOIs
StatePublished - 2013
Event2013 International Conference on Material Engineering, Chemistry and Environment, MECE 2013 - Wuhan, China
Duration: 24 Aug 201325 Aug 2013

Publication series

NameAdvanced Materials Research
Volume788
ISSN (Print)1022-6680

Conference

Conference2013 International Conference on Material Engineering, Chemistry and Environment, MECE 2013
Country/TerritoryChina
CityWuhan
Period24/08/1325/08/13

Keywords

  • Granular sludge
  • Methanogenic
  • Startup characteristics
  • UASB reactor
  • pH 5.5

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