scholarly journals Current Situation of Microplastics Contamination in Urban Water Circulation Systems

2020 ◽  
Vol 49 (6) ◽  
pp. 296-300
Author(s):  
Shuhei TANAKA ◽  
Satoru YUKIOKA ◽  
LÉOPOLD Bouche ◽  
Mengze WANG ◽  
Yoshiki NABETANI ◽  
...  
Keyword(s):  
Current Situation ◽  
Water Circulation ◽  
Urban Water

Assessment of hydrologic and environmental performances of green roof system for improving urban water circulation

2019 ◽  
Vol 161 ◽  
pp. 14-20 ◽  
Author(s):  
Jechan Jeon ◽  
Jungsun Hong ◽  
Minsu Jeon ◽  
Dongseok Shin ◽  
Lee-Hyung Kim
Keyword(s):  
Green Roof ◽  
Water Circulation ◽  
Urban Water ◽  
Roof System

Urban Bluebelt Construction – Control Countermeasure of Urban Blue Line (River Project) from Line to the Whole

2014 ◽  
Vol 919-921 ◽  
pp. 1586-1590
Author(s):  
Yao Zhi Huang ◽  
Lin Lin
Keyword(s):  
Urban Design ◽  
Water Body ◽  
Current Situation ◽  
Urban Water ◽  
Water Network ◽  
Design Build ◽  
Comprehensive Development ◽  
Micro Level ◽  
Area Use ◽  
Blue Line

Since the Administrative Measures of Urban Blue Line being issued, cities compile the Blue Line project in succession, which reflects a series of problems and deficiencies. The simply method to determine the line can not meet the demands of comprehensive development of water body and land function, which causes the guiding function of the project and its construction weak, this is the problem desiderated to be discussed and solved when the compiling the urban Blue Line. This article is based on the current situation of compilation and implementation of urban Blue Line project, introduces the concepts of Bluebelt, Paste Line Rate, put forward the planning control countermeasure combined with Blue Line control and Bluebelt design, build up the Bluebelt network in macroscopic area, use Blue Line to control on meso-level, adjust urban design flexibly on micro-level, in order to provide some valuable reference for the protection and development of urban water network and compilation of Blue Line and related project.

The Influence of Rainwater Reuse on Urban Water Circulation and Downstream Eco-Environment

2013 ◽  
Vol 652-654 ◽  
pp. 1696-1699
Author(s):  
Zhen Min Zhou ◽  
Xue Chao Wang
Keyword(s):  
Theoretical Analysis ◽  
Rainwater Harvesting ◽  
Water Circulation ◽  
Urban Water ◽  
Local Conditions ◽  
Flood Peak ◽  
Rainwater Infiltration ◽  
Flood Season ◽  
Negative Effect ◽  
Runoff Pollution

Based on theoretical analysis and comparison, it is sure that urban rainwater collection and reuse have no negative effect on urban water circulation and downstream eco-environment. It is shown from the results that rainwater collection and reuse would not reduce volume of rainwater infiltration. It also could control runoff pollution and reduce the flood peak of downstream river in flood season. Thus, rainwater harvesting was an effective approach to improve the eco-environment of downstream river. It could be concluded that the technique could be applied to different areas to improve local conditions.

scholarly journals Development of the Urban Water Balance Model by Linking Water Distribution and Sewer Networks

2020 ◽  
Vol 20 (6) ◽  
pp. 369-377
Author(s):  
Gunhui Chung ◽  
Won Soo Ohk
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Low Impact Development ◽  
Distribution Networks ◽  
Water Circulation ◽  
Urban Water ◽  
Pipe Network ◽  
Sewage Pipe ◽  
Pipe Networks ◽  
Supply Pipe

Due to urban overcrowding, the population density of residential areas and water use per unit are increasing. Therefore, it is necessary to study the flow of water supplied to cities and to improve the healthy circulation of urban water. This study used Modelica, a non-causal analytical program. Using Open Modelica, the researchers constructed a model linking water distribution and sewerage, as the basis of a balanced urban water model. Using the programmer's toolkit provided by EPA-NET and EPA-SWMM, which are commonly used to simulate the existing water supply and sewage pipe networks, Open Modelica-based water distribution networks and sewage pipe networks can be connected and simulated based on the customer block. A model was built so that 90% of the hourly water consumption supplied to the water supply pipe network can be automatically introduced into the sewage pipe network. If a matching table is constructed to connect the nodes of the water supply pipe network and the sewer pipe network, the nodes will reflect in the graphical user interface (GUI) developed in Open Modelica. It was developed to enable modification of links, pumps, tanks, and valves. The 48-hour water supply was simulated using the developed model, and it was confirmed that water supply and sewage networks were successfully connected. In the future, we plan to develop a more expanded and realistic urban water circulation model by considering additional urban water circulation factors, such as sewage treatment, water reuse, rainwater use, storm runoff, and low-impact development facilities. Through this study, it was confirmed that Modelica can simulate changes in the system over time. Since it is a formula-based non-causal simulation language, it is possible to establish and reuse relationships between blocks through block-by-block development of urban water circulation elements. It is expected to contribute to the visualization and concretization of future urban water circulation models.

The Water Cycle in the Smart Cities Environment

2020 ◽  
pp. 132-160
Author(s):  
Eduardo J. López-Fernández ◽  
Francisco Alonso-Peralta ◽  
Gastón Sanglier-Contreras ◽  
Roberto A. González-Lezcano
Keyword(s):  
Smart City ◽  
Water Cycle ◽  
Smart Cities ◽  
Current Situation ◽  
Urban Water ◽  
Operation And Maintenance ◽  
Water Collection ◽  
Sewage Purification ◽  
Construction Operation ◽  
Urban Water Cycle

This chapter analyses the urban water cycle in the smarts cities, describes the current situation, which constitutes a valid but outdated knowledge, adopting the perspective of improving and extending the measures that lead to greater efficiency of the water collection, treatment, supply, sewage, purification, and reuse systems at all stages of the water cycle: the sites, construction, operation, and maintenance of the networks and systems that enable the cycle to be completed effectively. The process of converting a city into smart city includes resources, processes, and services, and all stages of the water cycle are a set of processes, with water as a fundamental resource, which condition the different services to citizens, and therefore, it is necessary to try to establish efficiency improvements in all of them.

Discussion on Control Measures of Combined Sewer Overflows

2011 ◽  
Vol 347-353 ◽  
pp. 1856-1859
Author(s):  
Yang Lin Ou ◽  
Zhi Li Chen
Keyword(s):  
Drainage System ◽  
Current Situation ◽  
Control Measures ◽  
Urban Water ◽  
Combined Sewer Overflows ◽  
Sewerage System ◽  
Combined Sewer ◽  
Sewer Overflows

With the acceleration of urbanization, Combined Sewer Overflows(CSOS) has become one of the important sources of polluted urban water. This paper overviewed the domestic and foreign CSOs current situation, and analysed the problems and deficiencies in the regulatory of CSOs in China. According to the characteristics of CSOs, we suggested that the regulatory of CSOs focus on the source, pipes and ends of the drainage system. The conclusion would be evidence for improving the combined sewerage system in China.

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