The rapid chemically induced corrosion of concrete sewers at high H2S concentration

Li, Xuan; O’Moore, Liza; Song, Yarong; Bond, Philip L.; Yuan, Zhiguo; Wilkie, Simeon; Hanžič, L.; Jiang, Guangming

doi:10.1016/j.watres.2019.06.062

Cited by 66 publications

(23 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, in order to provide concrete with long-lasting antimicrobial activity, it is necessary to add bactericidal admixtures. This will not only protect animals against re-infection with diseases but also increase durability of structures by eliminating biological corrosion [33]. Introduction of bactericidal admixtures reduces microbiological pressure on animals [34].…”

Section: Discussion Of Results Obtained In the Study Of Concretes Witmentioning

confidence: 99%

Improvement of functional performance of concrete in livestock buildings through the use of complex admixtures

Шкромада¹,

Paliy²,

Nechyporenko³

et al. 2019

EEJET

View full text Add to dashboard Cite

Section: Discussion Of Results Obtained In the Study Of Concretes Witmentioning

confidence: 99%

Improvement of functional performance of concrete in livestock buildings through the use of complex admixtures

Шкромада¹,

Paliy²,

Nechyporenko³

et al. 2019

EEJET

View full text Add to dashboard Cite

“…In the Fe-DWTS dosed sewer, cetirizine, venlafaxine and sulfamethoxazole had a rapid initial removal up to 64.4 ± 5.4%, 32 ±5% and 10 ± 5.8% within 15 min respectively. The ultimate removal reached to 88.3 ± 16% (cetirizine), 53.2±4% (venlafaxine) and 78.7 ± 15% (sulfamethoxazole) at the end of 6 hrs in the Fe-DWTS dosed reactor. The increase in the ultimate removal of these compounds after the rapid initial removal in the Fe-DWTS dosed sewer reactor suggest some biodegradation of these compounds on top of adsorption (appendix B, Figure B1).…”

Section: Low Degradable Compoundsmentioning

confidence: 97%

“…The chemical reaction leads to the production of gypsum (CaSO4) that can be easily washed away by the flush of water. The formation of ettringite (( Asides this microbial induced concrete corrosion, in some parts of the sewer lines, where high concentrations of H2S prevails, H2S can be directly oxidized into gypsum on the new concrete surfaces, causing rapid corrosion even before the growth of SOMs 53 . The corrosion rate of concrete sewers was estimated as 2.5-10 mm year -1 that provides sewer structures with the lifetime of 20-70 years 54 .…”

Section: Figure 24 Stages During the Microbial Induced Concrete Cormentioning

confidence: 99%

“…The MCA analysis and the data interpretation follows the same procedure as described by Xuan et.al. 53…”

Section: Microbial Community Analysis (Mca)mentioning

confidence: 99%

“…The DNA of the samples were extracted right after collection using the Fast DNA TM SPIN Kit for Soil (MP Biomedicals, CA, USA), as per manufacture's instruction. The extracted DNA were analysed as described by Xuan et.al 53. and had mentioned in detail in the section 4.3.8.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Investigating the fate of organic micropollutants due to the dosing of iron salt or iron rich drinking water treatment sludge in urban wastewater system

Kulandaivelu¹

View full text Add to dashboard Cite

Hydrogen sulfide production in the sewer network is the major cause for sewer corrosion and odour related issues. Iron (Fe) salt dosing is one of the efficient methods for sulfide control in the sewer network by precipitating the biologically formed sulfide to iron sulfide (FeS) particles. Though Fe salt is efficient in controlling sulfide, it requires continuous dosing that necessitates the search for alternative cheap sources.Meanwhile, water utilities are seeking an efficient management strategy for the discharge of sludge by-product from the drinking water treatment process. This byproduct also known as drinking water treatment sludge (DWTS) is either Fe-rich or aluminium (Al)-rich based on the coagulant used. The high Fe content in Fe-DWTS, could potentially be used to replace Fe salts for sulfide control in the sewer network.During Fe salt/Fe-DWTS dosing, formation of FeS particles is considered as the major sulfide control mechanism in the sewer network. Previous studies explored the multiple benefits of upstream sewer Fe dosing in the downstream processes such as phosphates removal in the bioreactor and sulfide mitigation in the anaerobic digester of the receiving wastewater treatment plant (WWTP). However, it is also well known that Fe salt is an effective coagulant for organic micropollutants (MPs) removal in the water treatment processes. As organic MPs such as pharmaceuticals, licit and illicit drugs, food additives etc., are ubiquitous in wastewater, the impact of dosing Fe salt/Fe-DWTS in the sewer network on the fate of these MPs is important but largely unknown. This thesis aims to address this research gap by investigating the impact of upstream Fe salt/Fe-DWTS dosing in sewers on the fate of organic MPs in the downstream sewer network and treatment process.Firstly, the impact of Fe salt dosing on the fate of selected organic MPs (8 compounds) was studied in a lab-scale rising main sewer reactor. The sulfide produced by sewer biofilms reacted with Fe 3+ forming black coloured FeS. Among the selected MPs, morphine, methadone and atenolol had >90% initial rapid removal within 5 min of Fedosing in the sewer reactor. The ultimate removal after 6 hr of retention time in the reactor reached 93-97%. Other compounds, ketamine, codeine, carbamazepine and acesulfame had 30-70% decrease of aqueous concentrations. The ultimate removal varied between 35 and 70% depending on their biodegradability. In contrast, paracetamol had no initial removal. Adsorption to the surface of FeS particles was likely responsible for the rapid MPs removal. viii Contribution by others to the thesisThis thesis contains some significant and substantial contribution from others as described below.

show abstract

The Development of a Portable IoT-Enabled Aqueous Sulphur Sensor

2022

View full text Add to dashboard Cite

The rapid chemically induced corrosion of concrete sewers at high H2S concentration

Cited by 66 publications

References 53 publications

Improvement of functional performance of concrete in livestock buildings through the use of complex admixtures

Improvement of functional performance of concrete in livestock buildings through the use of complex admixtures

Investigating the fate of organic micropollutants due to the dosing of iron salt or iron rich drinking water treatment sludge in urban wastewater system

The Development of a Portable IoT-Enabled Aqueous Sulphur Sensor

Contact Info

Product

Resources

About