scholarly journals The Effect of Sponge City Construction for Reducing Directly Connected Impervious Areas on Hydrological Responses at the Urban Catchment Scale

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1163 ◽  
Author(s):  
Changmei Liang ◽  
Xiang Zhang ◽  
Jun Xia ◽  
Jing Xu ◽  
Dunxian She
Keyword(s):  
Rainfall Intensity ◽  
Drainage System ◽  
The United States ◽  
Spatial Distributions ◽  
Catchment Scale ◽  
Urban Catchment ◽  
Sponge City ◽  
Urban Stormwater Runoff ◽  
City Construction ◽  
Impervious Areas

Low-impact development (LID) has been widely used at both site-specific and local scales to try and mitigate the impact of urban stormwater runoff caused by increasing impervious urban areas. Recently, the concept of a “sponge city” was proposed by the Chinese government, which includes LID controls at the source, a pipe drainage system midway, and a drainage system for excess stormwater at the terminal. There is a need to evaluate the effectiveness of sponge city construction at the large urban catchment scale, particularly with different spatial distributions of LIDs that reduce directly connected impervious areas (DCIAs). In this paper, the performances of five design scenarios with different spatial distributions but same sizes of LID controls at the urban catchment scale were analyzed using a geographic information system (GIS) of the United States Environmental Systems Research Institute (ESRI)—based Storm Water Management Model (SWMM) of the United States Environmental Protection Agency (USEPA) and MIKE 11 of Danish Hydraulic Institute (DHI) in Xining City, China. Results confirmed the effectiveness of sponge city construction in reducing the urban stormwater runoff. The hydrological performance reduction was positively correlated and linearly dependent on DCIA reduction. Peak flow reduction was most sensitive to DCIA reduction, followed by runoff volume and peak time. As rainfall intensity increased, the hydrological performance was more sensitive to rainfall intensity than DCIA reduction. Results of this study provide new insights for stormwater managers to implement LID more effectively at the urban catchment scale.

scholarly journals The use of bioretention cell to decreasing outflow from parking lot

2018 ◽  
Vol 36 (1) ◽  
pp. 173-181
Author(s):  
Andrzej Wałęga ◽  
Marta Cebulska ◽  
Wiesław Gądek
Keyword(s):  
Environmental Protection Agency ◽  
Rainfall Intensity ◽  
Precipitation Pattern ◽  
Sewer System ◽  
Urban Catchment ◽  
Storm Water Management Model ◽  
Combined Sewer ◽  
Parking Lot ◽  
Decentralized Management ◽  
Impervious Areas

AbstractThe objective of the research was to look into the role that bioretention systems play in a decentralized management of stormwater runoff from the impervious areas. The study took place at a catchment of a low permeability and equipped with a combined sewer system. Two rainfall options were selected: actual rainfall intensity q = 105.65 dm3∙s−1∙ha−1 and a hypothetic rainfall with a probability of exceedance p = 10% and q = 40.7 dm3∙s−1∙ha−1. All calculations were carried out using the SWMM EPA program (storm water management model; Environmental Protection Agency). They have shown that the bioretention system reduces the cumulative flow rates by over 55% and the flood wave volume by over 54%. Moreover, it was found that, a precipitation pattern significantly influences runoff from the urban catchment.

Minimum Inter-Event Time to Identify Independent Rainfall Events in Urban Catchment Scale

2014 ◽  
Vol 1073-1076 ◽  
pp. 1630-1633 ◽  
Author(s):  
Marco Carbone ◽  
Michele Turco ◽  
Giuseppe Brunetti ◽  
Patrizia Piro
Keyword(s):  
Drainage System ◽  
Accurate Estimation ◽  
Critical Study ◽  
Storm Event ◽  
Catchment Scale ◽  
Urban Catchment ◽  
Rainfall Events ◽  
Continuous Simulation ◽  
Event Time ◽  
Definition Of

For many hydrologic analyses, planning or design problems, reliable rainfall estimates are necessary. For this reason, an accurate estimation of storm event properties is central to continuous simulation of rainfall. Rainfall is generally noted as single events or storms where the beginning and the end are defined by rainless of particular size duration called Minimum Inter-event Time (MIT). Starting from a critical study of the state of the art, this paper intends to investigate the definition of MIT for rainfall events shorter than an hour that, on an urban scale, are the most critical for designers, planners and operators of urban drainage system. All event characteristics such as depth and mean rain rate, are influenced by the choice of the value of MIT. This paper reviews the range of approaches used in literature and after this, based on a year of pluviograph records on an urban catchment, proposes a value of MIT according to catchment network entry time.

scholarly journals Effective Evaluation of Infiltration and Storage Measures in Sponge City Construction: A Case Study of Fenghuang City

Water ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 937 ◽  
Author(s):  
Jinjun Zhou ◽  
Jiahong Liu ◽  
Weiwei Shao ◽  
Yingdong Yu ◽  
Kun Zhang ◽  
...  
Keyword(s):  
Drainage System ◽  
Annual Runoff ◽  
Hunan Province ◽  
Chinese Government ◽  
Control Effect ◽  
Sponge City ◽  
Runoff Control ◽  
City Construction ◽  
And Storage

In recent years, urban waterlogging problems have become more and more serious, which has led to flood disasters in some cities. The Chinese government launched the sponge city pilot construction in 2015 to mitigate the risk of urban flooding and control the runoff in source areas. Rain-runoff control is one of the main indices of a sponge city, thus, evaluating its control effect is essential for sponge city construction. This paper chose Fenghuang city, located in the west of Hunan province, as a case study area to assess the rainwater control effect by using the MIKE FLOOD model. The results showed that: (1) the total annual runoff control rate (TARCR) of sponge city design was a reasonable indicator for daily rainwater control; (2) the goal of Fenghuang Sponge City was close to the 1-year rainfall event; and (3) infiltration and storage measures could reduce but not eliminate urban waterlogging. The capacity of the drainage system should be fundamentally improved to enhance the prevention standards of urban waterlogging.

scholarly journals A New Strategy for Sponge City Construction of Urban Roads: Combining the Traditional Functions with Landscape and Drainage

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3469
Author(s):  
Chengyao Wei ◽  
Jin Wang ◽  
Peirong Li ◽  
Bingdang Wu ◽  
Hanhan Liu ◽  
...  
Keyword(s):  
Removal Rate ◽  
Steel Slag ◽  
Drainage System ◽  
Oxygen Demand ◽  
Annual Runoff ◽  
Volume Control ◽  
Sponge City ◽  
New Strategy ◽  
Basic Functions ◽  
City Construction

Urban roads play a key role in sponge city construction, especially because of their drainage functions. However, efficient methods to enhance their drainage performance are still lacking. Here, we propose a new strategy to combine roads, green spaces, and the drainage system. Generally, by considering the organization of the runoff and the construction of the drainage system (including sponge city facilities) as the core of the strategy, the drainage and traffic functions were combined. This new strategy was implemented in a pilot study of road reconstruction conducted in Zhangjiagang, Suzhou, China. Steel slag was used in the structural layers to enhance the water permeability of the pavement and the removal of runoff pollutants. The combined effects of this system and of the ribbon biological retention zone, allowed achieving an average removal rate of suspended solids, a chemical oxygen demand, a removal of total nitrogen and total phosphorus of 71.60%, 78.35%, 63.93%, and 49.47%; in contrast, a traditional road could not perform as well. Furthermore, the volume control rate of the annual runoff met the construction requirements (70%). The results of the present study indicate that, combining the traditional basic functions of roads with those of landscape and drainage might be a promising strategy for sponge city construction of urban road.

scholarly journals Comprehensive Performance Evaluation System Based on Environmental and Economic Benefits for Optimal Allocation of LID Facilities

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 341 ◽  
Author(s):  
Yiran Bai ◽  
Yuhong Li ◽  
Ruoyu Zhang ◽  
Na Zhao ◽  
Xiaofan Zeng
Keyword(s):  
Evaluation System ◽  
Green Roof ◽  
The United States ◽  
Economic Benefits ◽  
Urban Flooding ◽  
Rain Garden ◽  
Sponge City ◽  
Permeable Pavement ◽  
Comprehensive Performance ◽  
City Construction

In recent years, urban flooding occurred frequently because of extreme rainstorms. Sponge city construction can effectively mitigate urban flooding and improve urban rainwater utilization. Low-impact development (LID) is regarded as a sustainable solution for urban stormwater management. In this project, a comprehensive evaluation system was developed based on environmental and economic benefits using the analytical hierarchy process (AHP) and the Storm Water Management Model (SWMM) of the United States (US) Environmental Protection Agency (EPA). The performance of four LID scenarios with the same locations but different sizes of green roof, permeable pavement, concave greenbelt, and rain garden were analyzed in the Sucheng district of Jiangsu province in China. Results illustrate that the green roof performed best in reducing runoff, while the rain garden performed worst. The LID combination scenario (1) that contained more green roof, permeable pavement, and concave greenbelt facilities, but fewer rain gardens had the better comprehensive performance on the basis of environmental and economic benefits. The combined scenario (2) (LID proportion of maximum construction area was 40%) could also be an alternative. This study provides a guide to optimize LID layouts for sponge city construction, which can also provide optimal selection for other sponge city constructions.

scholarly journals Coupling of SWMM With 2D Hydrodynamic Model for Simulation of Sponge City Construction Scheme

2021 ◽  
Vol 643 ◽  
pp. 012002
Author(s):  
Yuyan Fan ◽  
Chengwen Wang ◽  
Haijun Yu ◽  
Junhao Pan ◽  
Zilu Ouyang
Keyword(s):  
Hydrodynamic Model ◽  
Sponge City ◽  
Construction Scheme ◽  
City Construction

scholarly journals Research Trends of Biodegradation of Cooking Oil in Antarctica from 2001 to 2021: A Bibliometric Analysis Based on the Scopus Database

2021 ◽  
Vol 18 (4) ◽  
pp. 2050
Author(s):  
Khadijah Nabilah Mohd Zahri ◽  
Azham Zulkharnain ◽  
Suriana Sabri ◽  
Claudio Gomez-Fuentes ◽  
Siti Aqlima Ahmad
Keyword(s):  
Bibliometric Analysis ◽  
Anthropogenic Activities ◽  
Drainage System ◽  
The United States ◽  
Waste Cooking Oil ◽  
Oil Degradation ◽  
Carcinogenic Effect ◽  
Cooking Oil ◽  
The Past ◽  
Scopus Database

In the present age, environmental pollution is multiplying due to various anthropogenic activities. Pollution from waste cooking oil is one of the main issues facing the current human population. Scientists and researchers are seriously concerned about the oils released from various activities, including the blockage of the urban drainage system and odor issues. In addition, cooking oil is known to be harmful and may have a carcinogenic effect. It was found that current research studies and publications are growing on these topics due to environmental problems. A bibliometric analysis of studies published from 2001 to 2021 on cooking oil degradation was carried out using the Scopus database. Primarily, this analysis identified the reliability of the topic for the present-day and explored the past and present progresses of publications on various aspects, including the contributing countries, journals and keywords co-occurrence. The links and interactions between the selected subjects (journals and keywords) were further visualised using the VOSviewer software. The analysis showed that the productivity of the publications is still developing, with the most contributing country being the United States, followed by China and India with 635, 359 and 320 publications, respectively. From a total of 1915 publications, 85 publications were published in the Journal of Agricultural and Food Chemistry. Meanwhile, the second and third of the most influential journals were Bioresource Technology and Industrial Crops and Products with 76 and 70 total publications, respectively. Most importantly, the co-occurrence of the author’s keywords revealed “biodegradation”, “bioremediation”, “vegetable oil” and “Antarctic” as the popular topics in this study area, especially from 2011 to 2015. In conclusion, this bibliometric analysis on the degradation of cooking oil may serve as guide for future avenues of research in this area of research.

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