Concrete sewer corrosion due to wastewater inoculation

Guangming Jiang, Tsz Ho Chiu, Mi Zhou, Xiaoyan Sun, Philips Bond, Zhiguo Yuan, Jurg Keller

Research output: Chapter in Book/Conference paperConference paperpeer-review


The development of corrosion in sewers is largely aggravated due to frequent occurrences of wastewater inoculation. This study comprehensively evaluated the impacts of different types of wastewater inoculation on the corrosion development through a 300-day experiment using concrete at different corrosion stages. It was found that wastewater inoculation increased the corrosion losses, especially for the initial stages of corrosion development. However, the effects could not be captured by measuring surface pH and sulfide uptake rate. The wastewater can bring complicated effects of acid neutralization, wash-off of corrosion layer and biofilms scouring in addition to the commonly accepted microbial inoculation.

Original languageEnglish
Title of host publicationEuropean Corrosion Congress, EUROCORR 2015
Place of PublicationAustria
PublisherAustrian Society for Metallurgy and Materials (ASMET)
Number of pages7
ISBN (Electronic)9781510837379
Publication statusPublished - 1 Jan 2015
Externally publishedYes
EventEuropean Corrosion Congress, EUROCORR 2015 - Graz, Austria
Duration: 6 Sep 201510 Sep 2015

Publication series

NameEuropean Corrosion Congress, EUROCORR 2015


ConferenceEuropean Corrosion Congress, EUROCORR 2015
Internet address


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