Key blackening and stinking pollutants in Dongsha River of Beijing: Spatial distribution and source identification

Song, Chunqiao; Liu, Xiaoling; Song, Yonghui; Liu, Ruixia; Gao, Hongjie; Han, Lu; Peng, Jianfeng

doi:10.1016/j.jenvman.2017.05.088

Cited by 54 publications

(21 citation statements)

References 66 publications

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“…Water and sediment qualities are integrated representations of multiple physical, chemical, and biological processes. Similar to other polluted urban rivers [2,6,16], FC river, which ran through the urban center, was characterized by high contents of TN, TP, NH 4 + -N, and low levels of DO (Figs 1 and 2). In the overlying water of both rivers, the concentrations of TN, TP, and NO 3 -N in summer were higher than spring, which might be attributed to a larger amount of surface runoff containing higher pollutants into rivers caused by rainfall in summer (674.70 mm during May to September, accounting for 64.38% of the annual rainfall in Wuxi) [36].…”

Section: Characteristics Of Water and Sediment Qualities In An Urban mentioning

confidence: 63%

“…Fast growth of population and urbanization cause urban areas to produce more and more pollution. Although improved wastewater collection and treatment can efficiently control point source pollution, nonpoint source pollution, such as surface runoff caused by rainfall events, as well as endogenous release of the sediment pollutants persist to increase the levels of pollution in urban rivers [1][2][3][4]. Usually, urban rivers are characterized by high levels of nutrient inputs associated with human activities [1,5].…”

Section: Introductionmentioning

confidence: 99%

“…High loading of nitrogen (N) is considered as one of the main causes of black-odor phenomenon in rivers [1,2,6,8]. Self-purification function of riverine ecosystems can removal N pollutants through microbial driven processes of ammonification, nitrification, denitrification and anoxic ammonium oxidation (anammox) [11].…”

Section: Introductionmentioning

confidence: 99%

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Insight into the nitrogen accumulation in urban center river from functional genes and bacterial community

Liu

Jiang

et al. 2020

PLoS ONE

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Along with urbanization, the intensified nitrogen pollution in urban rivers and the form of black-odor rivers has become one of the biggest concerns. Better understanding of the nitrogen transformations and microbial mechanisms occurring within urban rivers could help to manage their water quality. In this study, pollution characteristics, potential nitrogen removal rate, composition and function of bacterial community, and abundance of functional genes associated with nitrogen transformation were comparatively investigated in a typical urban river (FC) and a suburban river (LH). Compared with LH, FC was characterized by higher content of nutrients, lower potential nitrogen removal rate and lower abundance of functional genes associated with nitrogen transformation in both overlying water and sediment, especially in summer. Sediment dissolved organic matter characterized by excitation−emission matrix (EEM) showed that FC was more severely polluted by high nitrogen organic matter. Our results revealed that anammox was the main nitrogen removal pathway in both rivers and potential nitrogen removal rates decreased significantly in summer. Bacterial community analysis showed that the benthic communities were more severely influenced by the pollutant than aquatic ones in both rivers. Furthermore, the FC benthic community was dominated by anaerobic respiring, fermentative, sulfate reduction bacteria. Quantitatively, the denitrification rate showed a significant positive correlation with the abundance of denitrification genes, whilst the anammox rate was significantly negatively correlated with bacterial diversity. Meanwhile, NH 4 +-N had a significant negative correlation to both denitrification and anammox in sediment. Taken together, the results indicated that the increased nitrogen pollutants in an urban river altered nitrogen removal pathways and bacterial communities, which could in turn exacerbate the nitrogen pollution to this river.

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Section: Characteristics Of Water and Sediment Qualities In An Urban mentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

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Insight into the nitrogen accumulation in urban center river from functional genes and bacterial community

Liu

Jiang

et al. 2020

PLoS ONE

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“…During the four decades of reform and opening up, rapid economic growth has occurred in China, with an average annual growth rate of 8%, which makes it Asia's largest economy and the world's second largest economy; however, economic growth is happening at the cost of serious pollution and ecological degradation [2,3]. Among the 423 major rivers in China, most of them show a seasonal or perennial phenomenon of black water with odor, and surface and ground waters are widely polluted by industrial and urban wastewater [4,5].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Influencing Factors of Spatial Differentiation of Urban Black and Odorous Waters in China

et al. 2018

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The pollution problem caused by urban black and odorous waters has received much attention from the Chinese government. Our research aims at systematically identifying the characteristics and the influential factors of spatial differentiation of urban black and odorous waters across China. The research, based on the data of black and odorous waters from 2100 Chinese cities, was conducted with the spatial analysis tool of ArcGIS. We found that the amount of Chinese urban black and odorous waters varied in spatial distribution, which was an agglomerated type with significant agglomeration. The kernel density was characterized by independent single kernel centers with ribbon-like and sporadic distributions of subcenters. The cold and hot spots showed a gradient distribution pattern of cold in the southwest and hot in the central east. These spatial distribution characteristics could be attributed to the following core factors, total wastewater discharge, length of urban drainage pipelines, municipal solid waste collection, daily urban sewage treatment capacity, and investment in urban pollution treatment of wastewater. The findings reveal the current geospatial distribution of black and odorous waters pollution and provide reference for the Chinese government to treat the pollution from several key points. Lastly, it is suggested that the Chinese government should establish joint control, joint prevention, and joint treatment mechanisms in the black and odorous waters areas and improve the safety standards of the whole water environment, so as to promote the treatment and elimination of urban black and odorous waters.

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“…MTL, DMS, DMDS, and DMTS are also known as volatile organic sulfur compounds (VOSCs). The high concentration of VSCs causes freshwater sites to become more odorous [29,30]. In 2007, a crisis occurred in Wuxi City, China, resulting from the accumulation of algae in Lake Taihu, the city's drinking water source, in which the tap water turned black and became odorous [31,32].…”

mentioning

confidence: 99%

Sulfur Development in the Water-Sediment System of the Algae Accumulation Embay Area in Lake Taihu

Liu

Shao

Zhang

et al. 2019

Water

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Sulfur development in water-sediment systems is closely related to eutrophication and harmful algae blooms (HABs). However, the development of sulfur in water-sediment systems during heavy algae accumulation still remains unclear, especially in hyper-eutrophic shallow lakes. In this study, a quarterly field investigation was carried out for a year in the algae accumulated embay area of Lake Taihu, accompanied by a short-term laboratory experiment on algae accumulation. The results show that hydrogen sulfide and methanethiol dominated the volatile sulfur compounds (VSCs) in the water during non-accumulation seasons, whereas the concentrations of dimethyl sulfides increased during heavy algae accumulation, both in the field and the laboratory. An increase in the acid volatile sulfide (AVS) in the surface sediments was also discovered together with the increase in dimethyl sulfides. The depletion of oxygen in the overlying water and sediment-water interface during the heavy algae accumulation and decomposition was found to be closely related to both the increase in VSCs in the overlying water and increase in AVS in the sediment. The increased concentrations of these reductive sulfocompounds might aggravate the eutrophication and HABs and should be given more consideration in future eutrophication control plans for lakes.2 of 15 of P to phytoplankton increases when the release of P from the sediments increases under anoxic conditions [20,21]; this usually occurs during algal blooms [22][23][24]. The formation of sulfides facilitates the formation of ferrous sulfide (FeS) and the release of P from the sediments [14], aggravating eutrophication and HABs in the water. This process usually takes place in freshwater sediments because of the low sulfate concentration of freshwater [14,25]. However, in the overlying water, another problem is the formation of volatile sulfur compounds (VSCs) during HABs. Various VSCs, including hydrogen sulfide (H 2 S), methanethiol (MTL), dimethyl sulfide (DMS), dimethyl disulfide (DMDS), and dimethyl trisulfide (DMTS), have been detected during HABs [26][27][28]. MTL, DMS, DMDS, and DMTS are also known as volatile organic sulfur compounds (VOSCs). The high concentration of VSCs causes freshwater sites to become more odorous [29,30]. In 2007, a crisis occurred in Wuxi City, China, resulting from the accumulation of algae in Lake Taihu, the city's drinking water source, in which the tap water turned black and became odorous [31,32]. High levels of VSCs were found to be responsible for the crisis [31,32]. VSCs are difficult to remove from drinking water sources through conventional techniques due to the high cost and the residual of the processes required [33]. Therefore, it is imperative to understand the origin and formation of VSCs in drinking water sources such as lakes and reservoirs.Although the formation and migration of sulfides and VSCs have been noted and studied worldwide [28,34], the development of these compounds in the water and sediment systems still remains unclear, especially...

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Key blackening and stinking pollutants in Dongsha River of Beijing: Spatial distribution and source identification

Cited by 54 publications

References 66 publications

Insight into the nitrogen accumulation in urban center river from functional genes and bacterial community

Insight into the nitrogen accumulation in urban center river from functional genes and bacterial community

Characteristics and Influencing Factors of Spatial Differentiation of Urban Black and Odorous Waters in China

Sulfur Development in the Water-Sediment System of the Algae Accumulation Embay Area in Lake Taihu

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