Influence of pressure main pumping frequency on sulfide formation rates in sanitary sewers

Shypanski, Adam; Yuan, Zhiguo; Sharma, Keshab

doi:10.1039/c7ew00428a

Cited by 13 publications

(19 citation statements)

References 11 publications

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“…The RM pipe has a diameter of 100 mm (A/V of 40 m -1 ) (Shypanski et al 2018). The feed pump was programmed to run for 1 min every 1 h at a flow rate of 236 L min -1 (0.51 m/s) to push the "spiked wastewater plug" approximately 30 m forward in the pipe.…”

Section: Rising Main (Rm)mentioning

confidence: 99%

“…In addition, sampling in the real sewer experiments is usually limited to the start and the end of the pipe, resulting in a limited number of samples and narrow window of HRT, which made it difficult to evaluate the transformation kinetics. For the purpose of studying processes within sewers under realistic but variable and measurable sewer conditions, pilot sewers were developed (Jin et al 2018, Shypanski et al 2018. These pilot sewers are sections of real sewer pipes that are fed continuously with wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Systematic evaluation of biomarker stability in pilot scale sewer pipes

et al. 2019

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Section: Rising Main (Rm)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Systematic evaluation of biomarker stability in pilot scale sewer pipes

et al. 2019

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“…The in-pipe velocity was chosen since it was considered sufficient to achieve self-cleaning of the pipes, while the HRT was within the typical range HRTs for municipal pressure mains and is consistent with previous experiments undertaken at the pilot plant , Shypanski et al 2018. The control line received raw wastewater with high organic carbon concentrations while the experimental line received wastewater that was diluted by specific ratios to simulate higher rates of household water use.…”

Section: Introductionmentioning

confidence: 92%

“…The aim was to isolate and quantify the effect of water conservation increases to organic carbon concentrations. However, reductions in flow will result in increases to the pressure main wastewater hydraulic residence times (HRT), which has been shown previously to affect sulfide production (Shypanski et al 2018). The overall effect is considered in chapter 5.…”

Section: Experimental Observations Of Pressure Main Performance Undermentioning

confidence: 99%

“…There are multiple downstream consequences from reductions in hydraulics flows, such as changes to the hydraulic retention times of wastewater in sewers, changes to re-aeration rates and increases to the concentrations of solids and organic carbon (Cook et al 2010, Marleni et al 2012. The effect of changes to hydraulic residence time on sulfide production and emissions in sewers has been investigated in previous studies (Shypanski et al 2018. However, the effect of changes to the composition of the wastewater particularly, organic carbon concentrations, that accompanies reductions in sewage flow has not been investigated to date.…”

Section: Introductionmentioning

confidence: 99%

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Impacts of water demand management on sewer resilience

Shypanski¹

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Sewers, which dispose our wastes and serve to protect our health and environment, are an integral component of our transition to a more water sustainable society. Sewers have the capacity to generate large quantities of hydrogen sulfide gas which is toxic, odorous, and highly destructive to concrete sewer infrastructure. Its generation, transport and loss in sewers is highly dependent on hydraulics and wastewater quality. There is the risk that improper implementation of water sustainable practices and infrastructure could have consequences for sewer resilience by increasing hydrogen sulfide concentrations, potentially costing tens of billions of dollars in remedial costs annually in Australia. For sustainable water practices to be successful, the impacts to sewers must be understood and accounted for. This thesis set out to identify the sections of sewer networks most vulnerable to upstream changes in water use based on changes to hydrogen sulfide generation, oxidation and mass transfer in pressure mains and gravity sewers. Fully quantifying the overall impacts to sewer I acknowledge that copyright of all material contained in my thesis resides with the copyright holder(s) of that material. Where appropriate I have obtained copyright permission from the copyright holder to reproduce material in this thesis and have sought permission from coauthors for any jointly authored works included in the thesis. V Publications during candidature Peer-reviewed papers, Shypanski A, Yuan Z, Sharma K. Influence of pressure main pumping frequency on sulfide formation rates in sanitary sewers.

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