Exploring the effect of floodgates operation systems on water environmental capacity in a regulated river network of Wuxi, China

Lan, Feng; Li, Qiaoqiao; Zhang, Lei; Wang, Haisen; Wang, Weilong; Han, Jun; Li, Bai-Lian

doi:10.1016/j.jclepro.2021.126743

Cited by 9 publications

(7 citation statements)

References 43 publications

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“…The comparison of the upstream and downstream simulation results showed that the water quality condition in the downstream area of the river network was improved more significantly under the floodgate regulation. This phenomenon could be attributed to the fact that these floodgates were frequently operated for flood control in summer, which accelerated the renewal of the water mass [ 24 ].…”

Section: Results and Discussion (Scenario Analysis Of Water Quality R...mentioning

confidence: 99%

“…The values of SI range from 0 to 1, representing “poor simulation results” and “perfect match”, respectively. They are defined as [ 24 ]

where n is the water quality monitoring points, and O i and S i are the observed data and the simulated data, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Wuxi is an archetypal example of a Chinese flooding area. According to historical records, 13 large floods occurred in Wuxi from 1983 to 2006 [ 24 ]. Simultaneously, Wuxi is subject to periodic, but not continuous, flooding and year-round high water tables.…”

Section: Study Areamentioning

confidence: 99%

“…Of course, the adverse consequences of dams have always existed. Meanwhile, the benefits and risks of dams and floodgates have been extensively analyzed in the literature [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. For instance, the benefits and risks fluctuate during the various periods of a project’s development.…”

Section: Introductionmentioning

confidence: 99%

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Improving City Water Quality through Pollution Reduction with Urban Floodgate Infrastructure and Design Solutions: A Case Study in Wuxi, China

Lan

Pan

Wang

et al. 2022

IJERPH

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Floodgate operation is one of the main forms of river regulation in the development and utilization of river basins. It changes the natural structure, flow process, and correlative environment of rivers. However, there is little analysis of the multiple impacts of small floodgate operation on the water environment in river networks and of the regulation patterns of urban floodgate infrastructure on pollution. In this paper, a one-dimensional hydrodynamic–water quality model, MIKE 11, was used, taking Wuxi’s two main pollutant indicators—the permanganate index (CODMn) and ammonia nitrogen (NH3-N)—to simulate the water quality response of Wuxi’s river network based on different design solutions of urban floodgate infrastructure. The results show that among the three design scenarios, the order of the decreasing amplitude of the CODMn and NH3-N concentrations was as follows: 1.4 m design solution scenario > 2.1 m design solution scenario > 0.7 m design solution scenario. Meanwhile, under the 1.4 m scenario, the maximum decrease in the CODMn concentration reached 37.57%, and the maximum decrease in the NH3-N concentration reached 206%. In the entire river network system, the improvement in the water quality in the downstream area was significantly better than that in the upstream area. In addition, under the three scenarios of floodgate operation, the changes in pollutant concentrations during the flood season (June–September) were significantly lower than those during the dry season (October–February) and the flat water season (March–May). The research results can provide theoretical support and new ideas for future research on the ecological operation of small floodgates and related research on the water environment effect.

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Section: Results and Discussion (Scenario Analysis Of Water Quality R...mentioning

confidence: 99%

“…The values of SI range from 0 to 1, representing “poor simulation results” and “perfect match”, respectively. They are defined as [ 24 ]

where n is the water quality monitoring points, and O i and S i are the observed data and the simulated data, respectively.…”

Section: Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving City Water Quality through Pollution Reduction with Urban Floodgate Infrastructure and Design Solutions: A Case Study in Wuxi, China

Lan

Pan

Wang

et al. 2022

IJERPH

Self Cite

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“…Such as the unascertained mathematical method (Chinh et al, 2017), multi-objective model (Li et al, 2016), geographic information system technology and water quality model (Li and Zou, 2015;Zhang et al, 2019;Dong et al, 2020). Among them, the water quality model has been widely used in WEC estimation, water pollution control, and management because it considers the hydrological and physical processes of pollutants (Yan et al, 2019;Feng et al, 2021). However, most existing studies only consider the water quality model and ignore the hydrological cycle (Ma et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Study on water quality simulation and dynamic water environment capacity of Helan County section of the third drainage ditch in Ningxia

et al. 2022

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The Helan section of the third drainage ditch in Ningxia is selected as the research object, and its water environmental capacity is analyzed; The Daily discharge and water level are calculated according to the measured data; Then the daily concentration values of the main water quality indexes are simulated by one-dimensional hydrodynamic water quality mathematical model; Finally, the dynamic water environment capacity is calculated. The results show that from May to October 2020, the main water quality indicators exceeding the standard in Helan section of the third drainage ditch were total nitrogen and five-day biochemical oxygen demand. Their water environmental capacity was −11.8744 t and −67.1173 t, respectively. Chemical oxygen demand and total phosphorus exceeded the standard severely in some months. There are problems of eutrophication and high organic content in drainage ditches. The primary pollution sources are aquaculture wastewater form fishery, farmland drainage, seasonal flood, and domestic sewage. It is suggested to take preventive measures such as source control, process blocking, and end treatment.

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Research on Hydrodynamic and Water Quality Optimization Scheduling Based on Optimization Technology for Complex of River Network Structures

Luan,

Hou,

Wang

et al. 2024

Water Resour Manage

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Exploring the effect of floodgates operation systems on water environmental capacity in a regulated river network of Wuxi, China

Cited by 9 publications

References 43 publications

Improving City Water Quality through Pollution Reduction with Urban Floodgate Infrastructure and Design Solutions: A Case Study in Wuxi, China

Improving City Water Quality through Pollution Reduction with Urban Floodgate Infrastructure and Design Solutions: A Case Study in Wuxi, China

Study on water quality simulation and dynamic water environment capacity of Helan County section of the third drainage ditch in Ningxia

Research on Hydrodynamic and Water Quality Optimization Scheduling Based on Optimization Technology for Complex of River Network Structures

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