Sediment risk analysis of urban drainage pipeline

The urban water body is an important part of the urban infrastructure, and the urban drainage pipe is the core part of the urban water system, however, heavy metals and nutrients such as nitrogen and phosphorus in the sediments of urban drainage pipes have some risks, so it is important to analyze the risk of sediments in urban drainage pipes. This paper analyzes the risk and harm of sediment in drainage pipeline from three aspects: human health, water ecological safety and water environmental quality, it will lay a foundation for further study on the risk of sediment in drainage pipeline to water environment.

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The scope of integrated modelling: system boundaries, sub-systems, scales and disciplines

Water Science & Technology ◽

10.2166/wst.2006.595 ◽

2006 ◽

Vol 54 (6-7) ◽

pp. 405-413 ◽

Cited By ~ 12

Author(s):

T.G. Schmitt ◽

W.C. Huber

Keyword(s):

System Analysis ◽

Water Cycle ◽

Water System ◽

Integrated Modelling ◽

Urban Drainage ◽

Urban Water ◽

System Boundaries ◽

Urban Water System ◽

System Project ◽

Modelling System

Integrated modelling has become an urgent issue of urban drainage and wastewater treatment planning. The scope of integrated modelling, system boundaries and disciplines to be involved are addressed in view of future developments and new paradigms in urban drainage, demanding the inclusion of the full urban water cycle. A system analysis is demonstrated to identify relevant sub-systems and components, processes and interactions within the urban water system. The permissibility to exclude subsystems or neglect interactions is evaluated. Integrated modelling of urban water system is characterised as an ambitious task in regard to system complexity, heterogeneous scales and interface problems. The methodical status quo is characterised in preliminary approaches towards integrated modelling. It is concluded that it does not seem promising to create and apply one entity model for the scope of integrated urban water modelling. Instead, the development of adequate and efficient IT frameworks is identified as the key issue of integrated modelling. Harmonising interfaces to facilitate the linking of existing models is presented as the objective of a European research project HarmonIT and the U.S. EPA Multimedia Integrated Modelling System project MIMS.

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Deterministic modelling of integrated urban drainage systems

Water Science & Technology ◽

10.2166/wst.2002.0059 ◽

2002 ◽

Vol 45 (3) ◽

pp. 81-94 ◽

Cited By ~ 102

Author(s):

W. Rauch ◽

J.-L. Bertrand-Krajewski ◽

P. Krebs ◽

O. Mark ◽

W. Schilling ◽

...

Keyword(s):

State Of The Art ◽

Water System ◽

Integrated Modelling ◽

Urban Drainage ◽

Urban Water ◽

Future Developments ◽

Urban Water System ◽

Deterministic Modelling ◽

History Of ◽

Sheer Size

Today, the main concepts required for describing the dynamics of drainage in an entire urban area are known and models are available that can reasonably simulate the behaviour of the urban water system. Still, such integrated modelling is a complex exercise not only due to the sheer size of the model, but also due to the different modelling approaches that reflect the history of the sub-models used and of the purpose they were built for. The paper reviews the state of the art in deterministic modelling, outlines experiences and discusses problems and future developments.

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Developing sustainability criteria for urban infrastructure systems

Canadian Journal of Civil Engineering ◽

10.1139/l04-072 ◽

2005 ◽

Vol 32 (1) ◽

pp. 72-85 ◽

Cited By ~ 159

Author(s):

Halla R Sahely ◽

Christopher A Kennedy ◽

Barry J Adams

Keyword(s):

Energy Use ◽

Sustainability Assessment ◽

Social Systems ◽

Water System ◽

Urban Infrastructure ◽

Urban Water ◽

Infrastructure Systems ◽

Criteria And Indicators ◽

Sustainability Criteria ◽

Urban Water System

Research in the area of sustainable urban infrastructure reflects the need to design and manage engineering systems in light of both environmental and socioeconomic considerations. A principal challenge for the engineer is the development of practical tools for measuring and enhancing the sustainability of urban infrastructure over its life cycle. The present study develops such a framework for the sustainability assessment of urban infrastructure systems. The framework focuses on key interactions and feedback mechanisms between infrastructure and surrounding environmental, economic, and social systems. One way of understanding and quantifying these interacting effects is through the use of sustainability criteria and indicators. A generic set of sustainability criteria and subcriteria and system-specific indicators is put forward. Selected indicators are quantified in a case study of the urban water system of the City of Toronto, Ontario, Canada.Key words: sustainable infrastructure, sustainability criteria and indicators, energy use, urban water systems.

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The Construction of Xi'an Urban Overall Water Environment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.374-377.238 ◽

2011 ◽

Vol 374-377 ◽

pp. 238-241

Author(s):

Dong Yu

Keyword(s):

Tang Dynasty ◽

Urban Landscape ◽

Water Environment ◽

Water System ◽

Living Environment ◽

Water Diversion ◽

Urban Water ◽

Metabolic Pattern ◽

Planning Strategy ◽

Urban Water System

The natural features and patterns of "Eight water Chang'an" is one of important symbols of the Tang Dynasty Culture,This paper discusses from the urban planning level the necessity of constructing the " Chang'an eight water" and its basic principles and methods, explores ways and means to achieve the objective from two levels of the long-term planning strategy and the gradual implementation.The paper propose in the course of restoration "Chang'an eight water" urban landscape basal, an overall planning must be developed from the perspective of urban water environment to change the linear metabolic pattern, and to construct the urban water system recirculating network.With the existing situation of urban water environment, trying to solve on-site problems of urban rain, sewage purification from the self-circulation. Considering the integrated relations among urban water catchment, water storage, water diversion projects and making them penetration with each other, from the point to surface progressively recovering the city "metabolic function" as a basic ecological node to improve the urban living environment.

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Urban Water System Dynamics and Conflict Resolution

Urban Water Engineering and Management ◽

10.1201/b15857-11 ◽

2010 ◽

pp. 427-461

Keyword(s):

Conflict Resolution ◽

System Dynamics ◽

Water System ◽

Urban Water ◽

Urban Water System

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Managing Apparent Loss and Real Loss from the Nexus Perspective Using System Dynamics

Water ◽

10.3390/w14020231 ◽

2022 ◽

Vol 14 (2) ◽

pp. 231

Author(s):

Seo Hyung Choi ◽

Bongwoo Shin ◽

Eunher Shin

Keyword(s):

System Dynamics ◽

Water Loss ◽

Management Strategies ◽

Water System ◽

Economic Feasibility ◽

Water Utilities ◽

Urban Water ◽

Water Losses ◽

Urban Water System ◽

Apparent Loss

When water utilities establish water loss control programs, they traditionally focus on apparent loss rather than real loss when considering economic feasibility in the water sector. There is an urgent need for new management approaches that can address complex relationships and ensure the sustainability of natural resources among different sectors. This study suggests a novel approach for water utilities to manage water losses from the water-energy (WE) Nexus perspective. The Nexus model uses system dynamics to simulate twelve scenarios with the differing status of water loss and energy intensities. This analysis identifies real loss as one of the main causes of resource waste and an essential factor from the Nexus perspective. It also demonstrates that the energy intensity of each process in the urban water system has a significant impact on resource use and transfer. The consumption and movement of resources can be quantified in each process involved in the urban water system to distinguish central and vulnerable processes. This study suggests that the Nexus approach can strongly contribute to quantifying the use and movement of resources between water and energy sectors and the strategic formulation of sustainable and systematic water loss management strategies from the Nexus perspective.

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Stress-Testing Framework for Urban Water Systems: A Source to Tap Approach for Stochastic Resilience Assessment

Water ◽

10.3390/w14020154 ◽

2022 ◽

Vol 14 (2) ◽

pp. 154

Author(s):

Dionysios Nikolopoulos ◽

Panagiotis Kossieris ◽

Ioannis Tsoukalas ◽

Christos Makropoulos

Keyword(s):

Water Distribution ◽

Stress Testing ◽

Water Cycle ◽

Water System ◽

Operating Conditions ◽

Distribution Model ◽

Generation Model ◽

Urban Water ◽

Testing Framework ◽

Urban Water System

Optimizing the design and operation of an Urban Water System (UWS) faces significant challenges over its lifespan to account for the uncertainties of important stressors that arise from population growth rates, climate change factors, or shifting demand patterns. The analysis of a UWS’s performance across interdependent subsystems benefits from a multi-model approach where different designs are tested against a variety of metrics and in different times scales for each subsystem. In this work, we present a stress-testing framework for UWSs that assesses the system’s resilience, i.e., the degree to which a UWS continues to perform under progressively increasing disturbance (deviation from normal operating conditions). The framework is underpinned by a modeling chain that covers the entire water cycle, in a source-to-tap manner, coupling a water resources management model, a hydraulic water distribution model, and a water demand generation model. An additional stochastic simulation module enables the representation and modeling of uncertainty throughout the water cycle. We demonstrate the framework by “stress-testing” a synthetic UWS case study with an ensemble of scenarios whose parameters are stochastically changing within the UWS simulation timeframe and quantify the uncertainty in the estimation of the system’s resilience.

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