Urbanization, land use, and water quality in Shanghai

Ren, Zhifeng; Zhong, Yang; Meligrana, John; Anderson, Bruce; Watt, W. E.; Chen, Jiakuan; Leung, Hok Lin

doi:10.1016/s0160-4120(03)00051-5

Cited by 226 publications

(114 citation statements)

References 13 publications

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“…The presence of the above compounds and 1.4-dichloro-benzene, p-xylene and ethylbenzene demonstrated that the HP River is suffering from different types of domestic and industrial pollution. Actually, this river is located in the most populated and industrialized area in China, which makes it easily contaminated (Ren et al, 2003;Yang et al, 2007;Wang et al, 2008). The average OAVs of the detected 18 odorants are shown in Fig.…”

Section: Odorant Removal In Wtpmentioning

confidence: 99%

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Guo

Yang

et al. 2016

Water Research

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a b s t r a c tOzonation is known to be very effective in the removal of odorants from source water. However, it is not known if ozonation is effective in the removal of multiple odorants causing different types of odors. In this study, the removal performance for odors and odorants were evaluated in a Water Treatment Plant (WTP), which was equipped with coagulation, sedimentation, ozonation, biological activated carbon (BAC) filtration, sand filtration, and chlorination in succession and located in the downstream of the Huangpu (HP) River, over the period from April, 2014 to April, 2015. Flavor profile analysis (FPA) results showed that the source water was constantly associated with septic and musty odors. Geosmin and 2-MIB, with an average OAV of 4.54 and 1.38, respectively, were the major odorants for musty odor, while bis(2-chloroisopropyl) ether, DEDS and DMDS with an average OAV of 2.35, 1.65 and 0.78, respectively, might be responsible for the septic odor. While the musty odor could be removed effectively through the combination of ozonation and BAC, the septic odor and associated odorants required further treatment with sand filtration and chlorination for complete removal. It is clear that the advanced treatment process was effective for the treatment of source water containing complicated odorants. It should be noted that the sedimentation process needs careful management because release of odorants may occur during the treatment. The result of this study will be helpful for the mitigation of odors in WTP using source waters suffering from complicated odor problems.

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Section: Odorant Removal In Wtpmentioning

confidence: 99%

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Guo

Yang

et al. 2016

Water Research

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“…The presence of diverse chemicals, including bis(2-chloroisopropyl) ether, α-methyl-styrene, 2,6-dichloro-phenol, DEDS and DMDS, suggested that the river source water is suffering from different types of domestic and industrial pollution. Actually, this river is located in the most populated and industrialized area in China, which makes it easily contaminated (Ren et al, 2003;Yang et al, 2007;Wang et al, 2008), and further protection measures should be taken in the future.…”

Section: Odorant Identification By Combining the Data From Gc-o/ms Anmentioning

confidence: 99%

“…The Huangpu (HP) River, an important source water for Shanghai, has long been suffering from septic and musty odors because of water pollution (Ren et al, 2003;Yang et al, 2007;Wang et al, 2014). By utilizing gas chromatography-olfactometry with mass spectrometry (GC-O/MS), the musty/earthy odors in the HP River have been identified as associated with 2-MIB and geosmin (Yu et al, 2009;Sun et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Guo

Yang

Wen

et al. 2016

Science of The Total Environment

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Identification of the trace odorants causing the septic odors in source waters with complex matrixes has long been a big challenge. The Huangpu (HP) River, an important source water for Shanghai, has long been suffering from septic and musty odors, although major odorants have not been identified. In this study, combining the data from gas chromatography-olfactometry with mass spectrometry (GC-O/MS) and comprehensive twodimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOFMS) using retention indices (RIs) was used for the identification of odorants in HP source water. Olfactometry peaks detected in water extracts by GC-O/MS were combined with the chromatography peaks detected by GC × GC-TOFMS based on the RIs determined using the retention times (RTs) of alkanes C7-C30. A total of thirteen olfactometry peaks were obtained though GC-O/MS analysis, and potential odorants corresponding to each of the olfactometry peaks were screened based on the odor characteristics and match similarity using GC × GC-TOFMS. Finally, fourteen odorants (one odorant was detected in GC × GC-TOFMS without an olfactometry peak), including three septic odorants (bis(2-chloroisopropyl) ether, diethyl disulfide and dimethyl disulfide) and two musty ones (geosmin and 2-MIB), were confirmed by using authentic standards. The septic and musty odorants in six Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v source water samples taken over a period of six months were quantified. Bis(2-chloroisopropyl) ether, with an odor activity value (OAV) of 1.84-3.2, was found to be a major septic odorant in HP source water, followed by diethyl disulfide (OAV 1.56-1.96) and dimethyl disulfide (OAV 0.37-2.42), while geosmin (OAV 4.37-11.44) was the major musty odorant, followed by 2-MIB (OAV 1.13-1.89). This is the first comprehensive study focusing on the identification of odorants in a complex source water. The integrated approach used in this study could be applied for the identification of odorants in other complex source waters suffering similar odor problems.

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“…Studies on this topic focus mainly on two aspects: first, how do water resources support and accelerate the urbanization process. Abundant water resources not only provide for the daily needs of city-dwellers, water is also an important input for various industrial and tertiary activities [10,11]. Furthermore, abundant water resources support improved ecological, environmental, and climatological factors that are attractive to business firms and talented workers.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Coupling Analysis of Urbanization and Water Resource Utilization Systems in China

Chou

Wang

2016

Sustainability

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While urbanization brings economic and social benefits, it also causes water pollution and other environmental ecological problems. This paper provides a theoretical framework to quantitatively analyze the dynamic relationship between water resource utilization and the process of urbanization. Using data from Jiangsu province, we first construct indices to evaluate urbanization and water resource utilization. We then adopt an entropy model to examine the correlation between urbanization and water resource utilization. In addition, we introduce a dynamic coupling model to analyze and predict the coupling degree between urbanization and water resource utilization. Our analyses show that pairing with rising urbanization during 2002-2014, the overall index of water resource utilization in Jiangsu province has experienced a "decline -rise-decline" trend. Specifically, after the index of water resource utilization reached its lowest point in 2004, it gradually began to rise. Water resource utilization reached its highest value in 2010. The coupling degree between urbanization and water resource utilization was relatively low in 2002 and 2003 varying between −90 • and 0 • . It has been rising since then. Out-of-sample forecasts indicate that the coupling degree will reach its highest value of 74.799 • in 2016, then will start to gradually decline. Jiangsu province was chosen as our studied area because it is one of the selected pilot provinces for China's economic reform and social development. The analysis of the relationship between provincial water resource utilization and urbanization is essential to the understanding of the dynamic relationship between these two systems. It also serves as an important input for developing national policies for sustainable urbanization and water resource management.

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Urbanization, land use, and water quality in Shanghai

Cited by 226 publications

References 13 publications

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Simultaneous removal of multiple odorants from source water suffering from septic and musty odors: Verification in a full-scale water treatment plant with ozonation

Identification of complex septic odorants in Huangpu River source water by combining the data from gas chromatography-olfactometry and comprehensive two-dimensional gas chromatography using retention indices

Dynamic Coupling Analysis of Urbanization and Water Resource Utilization Systems in China

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