Variations in activities of sewer biofilms due to ferrous and ferric iron dosing

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Bruno KiilerichJes Vollertsen

Abstract

Addition of ferrous and ferric iron salts to wastewater is a commonly used practice for sulfide abatement in sewer force mains. When iron is added to wastewater where sulfate respiration takes place, it produces ferrous sulfide precipitates with the formed sulfide. The effect of iron addition has traditionally been focused on solely from the perspective of reaction stoichiometry. Possible influences on the microbial communities in biofilms growing in force mains have largely been neglected. In this study the activity and microbiome was examined in three pilot scale force mains conveying real wastewater, two subjected to iron treatment and one operated as an untreated control. Activity was measured on suspended biofilm samples extracted from the experimental setup. The microbiome of the biofilm was analyzed by V3 + V4 16S rDNA sequencing. Correlation analysis of chemical composition of the biofilms and activity measurements for operational taxonomic units of relevance to sulfide and methane production were performed. In conclusion, it was found that both ferrous and ferric treatment reduced sulfate reduction and methane production, and that both iron salts induced significant changes to force main biofilm microbiomes.

References

Apr 1, 1994·Journal of Bacteriology·J W CostertonG James
Nov 1, 1983·Applied and Environmental Microbiology·M H TurakhiaW G Characklis
Mar 24, 2006·Water Environment Research : a Research Publication of the Water Environment Federation·Chul ParkJohn T Novak
Jan 31, 2007·Chemical Reviews·David Rickard, George W Luther
Nov 9, 2007·Water Research·Albert GuisasolaZhiguo Yuan
Dec 11, 2008·FEMS Microbiology Reviews·Carey D NadellKevin R Foster
Sep 25, 2009·Water Environment Research : a Research Publication of the Water Environment Federation·Janani MohanakrishnanZhiguo Yuan
May 26, 2011·Applied Microbiology and Biotechnology·Janani MohanakrishnanRikke Louise Meyer
Oct 25, 2011·Water Research·Ramon GanigueZhiguo Yuan
Oct 1, 2013·Nature Methods·Joseph N PaulsonMihai Pop
Dec 19, 2013·Bioresource Technology·Wen-Wei Li, Han-Qing Yu
Apr 12, 2016·MicrobiologyOpen·Henriette Stokbro JensenCatherine A Biggs
May 24, 2016·Nature Methods·Benjamin J CallahanSusan P Holmes
Jul 28, 2016·Water Environment Research : a Research Publication of the Water Environment Federation·Elice Alice RudelleJes Vollertsen

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