Effects of nitrite concentration and exposure time on sulfide and methane production in sewer systems

Jiang, Guangming, Gutierrez, Oriol, Sharma, Keshab Raj and Yuan, Zhiguo (2010) Effects of nitrite concentration and exposure time on sulfide and methane production in sewer systems. Water Research, 44 14: 4241-4251. doi:10.1016/j.watres.2010.05.030

Author Jiang, Guangming
Gutierrez, Oriol
Sharma, Keshab Raj
Yuan, Zhiguo
Title Effects of nitrite concentration and exposure time on sulfide and methane production in sewer systems
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2010-07-01
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.watres.2010.05.030
Open Access Status Not yet assessed
Volume 44
Issue 14
Start page 4241
End page 4251
Total pages 11
Editor David Dixon
Jean-Claude Block
Mogens Henze
Place of publication Oxford, England
Publisher Pergamon
Language eng
Subject 2302 Ecological Modelling
2312 Water Science and Technology
2311 Waste Management and Disposal
2310 Pollution
Abstract Nitrite dosing is a promising technology to prevent sulfide and methane formation in sewers, due to the known inhibitory/toxic effect of nitrite on sulfate-reducing bacteria (SRB) and methanogenic Archaea (MA). The dependency of nitrite-induced inhibition on sulfide and methane producing activities of anaerobic sewer biofilms on nitrite levels and exposure time is investigated using a range of nitrite concentrations (40, 80, 120 mg-N/L) and exposure time up to 24 days. The recovery of these activities after the 24-day nitrite dosage was also monitored for more than two months. The inhibition level was found to be dependent on both nitrite concentration and exposure time, with stronger inhibition observed at higher nitrite concentrations and/or longer exposure time. However, the time required for achieving 50% recovery of both sulfate-reducing and methanogenic activities after the cessation of nitrite dosage only marginally depended on nitrite concentration. Model-based analysis of the recovery data showed that the recovery was likely due to the regrowth of SRB and methanogens. The lab studies and mathematical analysis supported the development of an intermittent dosing strategy, which was tested in a 1-km long rising main sewer. The field trial confirmed that intermittent dosing of nitrite can effectively reduce/prevent the formation of both sulfide and methane.
Keyword Sulfide
Sulfate-reducing bacteria
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID LP0882016
Institutional Status UQ
Additional Notes Received 25 September 2009; revised 29 April 2010; accepted 24 May 2010. Available online 1 June 2010.

Document type: Journal Article
Sub-type: Article (original research)
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Advanced Water Management Centre Publications
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Created: Sat, 24 Jul 2010, 00:31:44 EST by Hong Lee on behalf of Advanced Water Management Centre