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Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

《环境科学与工程前沿（英文）》 2017年 第11卷 第4期 doi: 10.1007/s11783-017-0943-5

摘要： The water quality in a typical urban river segment originated with reclaimed water in Beijing was monitored for two years to investigate the evolution of water quality along the river, and statistical analysis was applied to determine factors influencing water quality of such river recharged by reclaimed water. It was found that no significant change in pollutant concentrations (including COD, NH -N, TN and TP) was observed during this time, and their average values were close to those of the original reclaimed water. However, turbidity and algal contents fluctuated temporally in the direction of river flow. Statistical analysis showed that turbidity was strongly positively correlated with algal contents for flow rate<0.1 m·s , whereas it was strongly positively correlated with both algal contents and TOC for flow rate>0.1 m·s . It was observed that diatom was the absolute predominant phyla with as the major species. In terms of algal bloom control, the specific growth rate of algae was strongly correlated to temperature, and was influenced by flow rate as well. Compared with two other rivers originated with reclaimed water and one originated with natural water, the Shannon–Wiener index in the objective river was the lowest, with values between 0.7 and 1.6, indicating a high risk for algal bloom. Statistics showed that Shannon–Wiener index was strongly negatively correlated to nutrient salts and cations.

关键词： Reclaimed water     Urban river     Turbidity     Algae     Flow rate    

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Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water

Haifeng JIA, Shuo WANG, Mingjie WEI, Yansong ZHANG

《环境科学与工程前沿（英文）》 2011年 第5卷 第2期   页码 255-265 doi: 10.1007/s11783-010-0279-x

摘要： The water quality pollution and ecological deterioration in peri-urban rivers are usually serious under rapid urbanization and economic growth. In the study, a typical peri-urban river, Nansha River, was selected as a case study to discuss the scheme of peri-urban river rehabilitation. Located in the north part of the Beijing central region, the Nansha River watershed has been designated as an ecologically friendly garden-style area with high-tech industry parks and upscale residential zones. However, the Nansha River is currently seriously contaminated by urban and rural pollutants from both nonpoint sources (NPS) and point sources (PS). In this study, the pollutant loads from point sources and nonpoint sources in the Nansha River watershed were first assessed. A coupled model, derived from the Environmental Fluid Dynamics Code and Water Quality Analysis Simulation Program, was developed to simulate the hydrodynamics and water quality in the Nansha River. According to the characteristics of the typical peri-urban river, three different PS and NPS control scenarios were designed and examined by modeling analyses. Based on the results of the scenario analysis, a river rehabilitation scheme was recommended for implementation.

关键词： peri-urban river     coupled hydrodynamic-water quality modeling     scenario analysis     river rehabilitation    

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characteristics and photochemical transformations of dissolved organic matter with EEM-PARAFAC in the WeiRiver of China

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1340-z

摘要：

• The source of DOM in surface water and sediment is inconsistent.

关键词： Dissolved organic matter     Parallel factor analysis     Excitation-emission matrices     Photodegradation    

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Changes in major factors affecting the ecosystem health of the Weihe River in Shaanxi Province, China

Qi LI, Jinxi SONG, Anlei WEI, Bo ZHANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第6期   页码 875-885 doi: 10.1007/s11783-013-0568-2

摘要： Maintenance of the ecosystem health of a river is of great importance for local sustainable development. On the basis of both qualitative and quantitative analysis of the influence of natural variations and human activities on the ecosystem function of the Weihe River, the changes in major factors affecting its ecosystem health are determined, which include: 1) Deficiency of environment flow: since the 1960s, the incoming stream flow shows an obvious decreasing tendency. Even in the low flow period, 80% of the water in the stream is impounded by dams for agriculture irrigation in the Baoji district. As a result, the water flow maintained in the stream for environmental use is very limited. 2) Deterioration of water quality: the concentrations of typical pollutants like Chemical Oxygen Demand (COD) and NH -N are higher than their maximum values of the Chinese environmental quality standard. Very few fish species can survive in the River. 3) Deformation of water channels: the continuous channel sedimentation has resulted in the decrease in stream gradient, shrinkage of riverbed and the decline in the capability for flood discharge. 4) Loss of riparian vegetation: most riparian land has been occupied by urban construction activities, which have caused the loss of riparian vegetation and biodiversity and further weakened flood control and water purification functions.

关键词： influencing factors     ecosystem health     ecological and environmental functions     the Weihe River     Shaanxi Province    

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response of bacterial community to the changes of nutrients and pollutants in sediments from an urban river

Fang Zhang, Hao Zhang, Ying Yuan, Dun Liu, Chenyu Zhu, Di Zheng, Guanghe Li, Yuquan Wei, Dan Sun

《环境科学与工程前沿（英文）》 2020年 第14卷 第2期 doi: 10.1007/s11783-019-1207-3

摘要： • Bacterial community varied spatially in sediments from the urban river network. • Key environmental factors shaping bacterial community were detected by RDA. • Bacterial co-occurrence networks changed at different levels of nutrient and metal. • Potential indicator species were selected to predict pollution risk in sediment. Microbial communities in sediment are an important indicator linking to environmental pollution in urban river systems. However, how the diversity and structure of bacterial communities in sediments from an urban river network respond to different environmental factors has not been well studied. The goal of this study was to understand the patterns of bacterial communities in sediments from a highly dense urbanized river network in the lower Yangtze River Delta by Illumina MiSeq sequencing. The correlations between bacterial communities, the environmental gradient and geographical distance were analyzed by redundancy analysis (RDA) and network methods. The diversity and richness of bacterial community in sediments increased from upstream to downstream consistently with the accumulation of nutrient in the urban river network. Bacterial community composition and structure showed obvious spatial changes, leading to two distinct groups, which were significantly related to the characteristics of nutrient and heavy metal in sediments. Humic substance, available nitrogen, available phosphorus, Zn, Cu, Hg and As were selected as the key environmental factors shaping the bacterial community in sediments based on RDA. The co-occurrence patterns of bacterial networks showed that positive interaction between bacterial communities increased but the connectivity among bacterial genera and stability of sediment ecosystem reduced under a higher content of nutrient and heavy metal in average. The sensitive and ubiquitous taxa with an overproportional response to key environmental factors were detected as indicator species, which provided a novel method for the prediction of the pollution risk of sediment in an urban river network.

关键词： Sediment     Urban river network     Bacterial community     Network analysis     Indicator species    

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Financing Model Decision of Inter-basin Water Transfer Projects

Ji-wei Zhu,Li-nan Zhou,Zhao Zhai,Cong Wang

《工程管理前沿（英文）》 2016年 第3卷 第4期   页码 396-403 doi: 10.15302/J-FEM-2016060

摘要： Inter-basin Water Transfer Projects require the appropriate financing model to attract large amounts of social investment. Therefore, financing model decision becomes the key of engineering construction. In three aspects, such as the subject, the object and the target of the financing model, Grey Target Model is established in this paper. First, the complex financing mode decision problems of Inter-basin Water Transfer Projects are decomposed by using hierarchical decomposition method. Then Analytical Hierarchy Process (AHP) method is used to calculate the comprehensive weight of evaluation index. Experts’ opinions financing model are transformed into the evaluation matrix based on the Dephi method. The Weighted Grey Target Model is used to calculate the approaching degree of financing model and assists financing mode decision. In addition, this paper takes the water diversion project from the Han to the Wei River of Shaanxi Province as a verification example for the model. For other water diversion projects, the evaluation results are also reliable and provide theoretical references for the financing model decision of Inter-basin Water Transfer Projects.

关键词： Inter-basin Water Transfer Projects     financing model     Weighted Grey Target Model     water diversion     Han River     Wei River    

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Effects of riparian land use on water quality and fish communities in the headwater stream of the Taizi River

Sen DING, Yuan ZHANG, Bin LIU, Weijing KONG, Wei MENG

《环境科学与工程前沿（英文）》 2013年 第7卷 第5期   页码 699-708 doi: 10.1007/s11783-013-0528-x

摘要： Riparian land use remains one of the most significant impacts on stream ecosystems. This study focuses on the relationship between stream ecosystems and riparian land use in headwater regions. Four riparian land types including forest, grassland, farmland, and residential land were examined to reveal the correlation between stream water and fish communities in headwater streams of the Taizi River in north-eastern China. Four land types along riparian of 3 km in length were evaluated at 25, 50, 100, 200 and 500 m widths, respectively. Generally, the results found a significant relationship between riparian land uses and stream water quality. Grassland was positively correlated with water quality parameters (conductivity and total dissolved solids) at scales from 100 to 500 m riparian width. Farmland and residential land was negatively correlated with water quality parameters at scales from 25 to 500 m and from 50 to 200 m riparian widths, respectively. Although the riparian forest is important for maintaining habitat diversity and fish communities, the results found that only fish communities were significantly correlated with the proportion of riparian farmland. Farmland had a positive correlation with individual fish abundance within a riparian corridor of 25 to 50 m, but a negative correlation with fish diversity metrics from 25 to 100 m. This study indicates that effective riparian management can improve water quality and fish communities in headwater streams.

关键词： fish     water quality     land use     riparian buffer     headwater stream    

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Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River

Jiaquan ZHANG, Shihua QI, Xinli XING, Lingzhi TAN, Wei CHEN, Ying HU, Dan YANG, Chenxi WU

《环境科学与工程前沿（英文）》 2012年 第6卷 第2期   页码 177-183 doi: 10.1007/s11783-011-0354-y

摘要： Soil is an important source to other environmental media and organisms for organochlorine pesticides (OCPs) bioaccumulation. Twenty-four representative surface soil samples were collected from the lower reaches of the Jiulong River, China, in 2009. The concentrations of hexachlorocyclohexane isomers (HCHs) ranged from 0.38 to 39.52 ng·g , with a mean value of 9.51 ng·g . The concentrations of dichlorodiphenyltrichloroethanes (DDTs) and their metabolites were within the ranges of 0.94–700.99 ng·g , with a mean value of 71.17 ng·g . The concentrations of HCHs and DDTs in the soil were lower than the first grade level (50 ng·g ) of the Chinese Environmental Quality Standard (GB15618-1995). Hierarchical Cluster Analysis (HCA) and Pearson’s bivariate Correlations Analysis (PCA) were used to analyse the distribution and contamination levels of OCPs in this region. The results showed that DDTs were the major contaminants and there were no significant correlations between various OCPs concentrations and the total organic carbon (TOC) contents. A significant positive correlation was observed between HCHs and DDTs ( <0.01), which indicates that HCHs and DDTs may have similar sources and fate in the study area.

关键词： Jiulong River     hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethan (DDT)     classification     Hierarchical Cluster Analysis (HCA)     Pearson’s bivariate Correlations Analysis (PCA)    

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Spatial distribution of ecological security status assessment of West-Liaohe River based on geographic

WANG Geng, WU Wei

《环境科学与工程前沿（英文）》 2007年 第1卷 第4期   页码 471-476 doi: 10.1007/s11783-007-0075-4

摘要： Eco-security assessment is a hot research area in resource and environmental science, which involves data with much spatial, non-linear, and random features. Geographic information system (GIS), as a useful tool to analyze and mana

关键词： environmental     Eco-security assessment     resource     Geographic information     non-linear    

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Uncovering CO2 emission drivers under regional industrial transfer in China’s Yangtze River

Huijuan JIANG, Yong GENG, Xu TIAN, Xi ZHANG, Wei CHEN, Ziyan GAO

《能源前沿（英文）》 2021年 第15卷 第2期   页码 292-307 doi: 10.1007/s11708-020-0706-z

摘要： With the relocation of heavy industries moving from downstream region to upstream and midstream regions in the Yangtze River Economic Belt (YREB), it is critical to encourage coordinated low carbon development in different regions within the YREB. This paper uncovers the evolution of CO emissions in different regions within the YREB for the period of 2000–2017. It decomposes regional CO emission changes using the temporal and cross-regional three-layer logarithmic mean Divisia index (LMDI) method. Besides, it decomposes industrial CO emission changes using the temporal two-layer LMDI method. The research results show that economic growth is the major driver for regional CO emission disparities. The mitigation drivers, such as energy intensity and energy structure, lead to a more decreased CO emission in the downstream region than in the upstream and midstream regions. In addition, it proposes several policy recommendations based upon the local realities, including improving energy efficiency, optimizing energy structure, promoting advanced technologies and equipment transfers, and coordinating the development in the upstream, midstream and downstream regions within the YREB.

关键词： CO2 emission     multi-layer LMDI decomposition     industrial transfer     governance    

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城市渠化河流生态流量核算方法 Article

尹心安, 杨志峰, 张恩泽, 徐志豪, 蔡宴朋, 杨薇

《工程（英文）》 2018年 第4卷 第5期   页码 590-596 doi: 10.1016/j.eng.2018.08.006

摘要：

城市河流生态流量核算对于水资源规划和河流保护非常重要。以往城市河流生态流量核算方法侧重于满足物种生境维持和污染物稀释的需求。然而，城市河流中很少存在需保护的物种，同时大量城市河流为混凝土化渠道，无需考虑物种生境维持需求；另外，随着城市水污染防治工程的建设，一些城市河流的污染问题可得到有效的控制。对于这类城市渠化河流，如果沿用以往的生态流量核算方法，即从物种生境和污染物稀释的角度来确定生态流量，生态流量的核算结果将很小，潜在地降低了未来水资源分配和管理中对河流生态保护的重视程度。为了更有效地核算渠化城市河流的生态流量，除了满足污染物稀释的需求外，本研究依据河流纵向水文连通程度的不同（高、中、低），提出了3 种情景下的生态流量核算方法。在高水文连通情景下，生态流量旨在维持一定的水流流速，以确保河流的自净能力并减缓藻类的繁殖；在中水文连通情景下，生态流量旨在维持城市河流中被拦水堰分割河段之间的纵向水力连通性，以确保河流中的物质、能量和信息间的交换；在低水文连通情景下，设计的生态流量将进一步减小，改为间歇地向城市河流补水，旨在满足被拦水堰分割河段间的间歇性连通。本研究以十五里河为研究案对象，研究结果表明新建立的生态流量核算方法可以提供更加精确、符合实际的生态流量核算结果，并为生态补水工程的建设和管理提供有效的指导。

关键词： 生态流量     城市河流     渠化河流     河流修复    

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Multi-scale evaluation of river health in Liao River Basin, China

Fei XU, Yanwei ZHAO, Zhifeng YANG, Yuan ZHANG

《环境科学与工程前沿（英文）》 2011年 第5卷 第2期   页码 227-235 doi: 10.1007/s11783-010-0219-9

摘要： Previous studies on river health evaluation mainly focused on characterizations at a river-corridor scale and ignored the complex interactions between the river ecosystem and other components of the river basin. Based on the consideration of the interactions among rivers, associated river basin and habitats, an assessment framework with multi-scale indicators was developed. An index system divided among these three scales to characterize the health of river ecosystems in China’s Liao River Basin was established. Set pair analysis was applied to integrate the multi-scale indicators and determine the health classes. The evaluation results indicated that the rivers in the western and eastern zones of the Liao River were classified as sick, and rivers in the main stream of the Liao and Huntai rivers were classified as unhealthy. An excessive level of disturbances, such as large pollution loads and dense construction of water conservation projects within the river basin, were the main causes of the river health deterioration.

关键词： multi-scale characterization     river health evaluation     Liao River Basin     set pair analysis    

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distribution of arsenic in sediments after an unexpected emergent discharge of high-arsenic wastewater into a river

Ruiping LIU, Wei XU, Kun WU, Wenxin GONG, Huijuan LIU, Jiuhui QU

《环境科学与工程前沿（英文）》 2013年 第7卷 第4期   页码 568-578 doi: 10.1007/s11783-013-0514-3

摘要： The unexpected emergent discharge of high-arsenic wastewater into water environments results in significantly increased levels of arsenic in water; however, the species distribution of arsenic in sediments has never been reported before for such cases. This study focuses on an As pollution accident in the Dasha River, and uses sequential extraction procedures with deionized water, 1?mol·L MgCl at pH= 8, 1?mol·L NaH PO at pH= 5, and 1?mol·L HCl to investigate four binding phases of arsenic (i.e., water soluble, ion-exchangeable, strongly-bound, and precipitates) in sediments at different layers in different cross-sections along the river. The average ratio of arsenite (As(III)) to arsenate (As(V)) was found to decrease from 0.74:1 in river water to 0.48:1 in sediment, owing to its higher affinity toward As(V) than As(III). The content of arsenic in the sediments was relatively low and the maximum content was observed to be 36.3?mg·kg for As(III) and 97.5?mg·kg for As(V). As(III) and As(V) showed different binding phases in sediments, and the average fractions of these four species were determined to be 0.09, 0.11, 0.17, and 0.63 for As(III) and 0.03, 0.14, 0.63, and 0.20 for As(V), respectively. For all the sediment samples, the content of arsenic showed no relationship with the characteristics of the sediments such as the particle diameter, the content of organic carbon, Fe, and Mn, although a negative correlation with particle diameter was observed for the sediments in the uppermost 2-cm layer. The unexpected emergent As incident results in the high content of total arsenic in the surface sediment, which may be potential secondary source to the elevated As levels in surface water.

关键词： river sediments     arsenic     species distribution     binding phases     unexpected discharge of high-As wastewater    

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数量工程技术在南京长江隧道工程中风险辨别及事故防范的应用研究

钱维,金先龙,沈建奇

《中国工程科学》 2008年 第10卷 第10期   页码 22-30

摘要：

以南京长江隧道工程为背景，提出了基于数量工程技术的风险提示及事故防范方法，即运用数值仿真方法，借助超级计算机的并行计算能力，建立盾构机进出洞，盾构机穿越长江大堤及穿越江中最浅覆土层，两台盾构机同时施工影响，盾构机穿越复合土层等工程关键问题的数量分析模型。基于该模型，对地表沉降过大、盾构机姿态偏移、开挖面失稳等工程风险进行了提示；分析了风险产生的机理、后果；提出了事故防范的措施，评价和验证了防范措施的有效性和合理性。

关键词： 南京长江隧道     数量工程技术     风险辨别与防范    

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Occurrence, removal, and environmental risks of pharmaceuticals in wastewater treatment plants in south China

Huang Huang, Jie Wu, Jian Ye, Tingjin Ye, Jia Deng, Yongmei Liang, Wei Liu

《环境科学与工程前沿（英文）》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1053-8

摘要：

Five pharmaceuticals were detected in wastewater treatment plants in southern China.

Biological treatment was the most effective process for PhACs removal.

Metoprolol showed negative removal during secondary treatment process.

The pharmaceuticals studied posed a low environmental risk to aquatic ecosystems.

关键词： Pharmaceuticals     Wastewater treatment     Pearl River Delta     Occurrence     Removal     Risk assessment    

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标题 作者 时间 类型 操作

Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

期刊论文

Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water

Haifeng JIA, Shuo WANG, Mingjie WEI, Yansong ZHANG

期刊论文

characteristics and photochemical transformations of dissolved organic matter with EEM-PARAFAC in the WeiRiver of China

期刊论文

Changes in major factors affecting the ecosystem health of the Weihe River in Shaanxi Province, China

Qi LI, Jinxi SONG, Anlei WEI, Bo ZHANG

期刊论文

response of bacterial community to the changes of nutrients and pollutants in sediments from an urban river

Fang Zhang, Hao Zhang, Ying Yuan, Dun Liu, Chenyu Zhu, Di Zheng, Guanghe Li, Yuquan Wei, Dan Sun

期刊论文

Financing Model Decision of Inter-basin Water Transfer Projects

Ji-wei Zhu,Li-nan Zhou,Zhao Zhai,Cong Wang

期刊论文

Effects of riparian land use on water quality and fish communities in the headwater stream of the Taizi River

Sen DING, Yuan ZHANG, Bin LIU, Weijing KONG, Wei MENG

期刊论文

Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River

Jiaquan ZHANG, Shihua QI, Xinli XING, Lingzhi TAN, Wei CHEN, Ying HU, Dan YANG, Chenxi WU

期刊论文

Spatial distribution of ecological security status assessment of West-Liaohe River based on geographic

WANG Geng, WU Wei

期刊论文

Uncovering CO2 emission drivers under regional industrial transfer in China’s Yangtze River

Huijuan JIANG, Yong GENG, Xu TIAN, Xi ZHANG, Wei CHEN, Ziyan GAO

期刊论文

城市渠化河流生态流量核算方法

尹心安, 杨志峰, 张恩泽, 徐志豪, 蔡宴朋, 杨薇

期刊论文

Multi-scale evaluation of river health in Liao River Basin, China

Fei XU, Yanwei ZHAO, Zhifeng YANG, Yuan ZHANG

期刊论文

distribution of arsenic in sediments after an unexpected emergent discharge of high-arsenic wastewater into a river

Ruiping LIU, Wei XU, Kun WU, Wenxin GONG, Huijuan LIU, Jiuhui QU

期刊论文

数量工程技术在南京长江隧道工程中风险辨别及事故防范的应用研究

钱维,金先龙,沈建奇

期刊论文

Occurrence, removal, and environmental risks of pharmaceuticals in wastewater treatment plants in south China

Huang Huang, Jie Wu, Jian Ye, Tingjin Ye, Jia Deng, Yongmei Liang, Wei Liu

期刊论文