Analysis of urban water cycle considering water reuse options

2007 ◽  
Vol 7 (5-6) ◽  
pp. 101-107 ◽  
Author(s):  
J. Lee ◽  
G. Pak ◽  
C. Yoo ◽  
J. Yoon
Keyword(s):  
Water Supply ◽  
Surface Runoff ◽  
Water Reuse ◽  
Water Cycle ◽  
Wastewater Reuse ◽  
Feasibility Analysis ◽  
Urban Water ◽  
Total Rainfall ◽  
Reuse Options ◽  
Urban Water Cycle

Water cycle analysis was performed for Gunja basin located in metropolitan Seoul using Aquacycle model in order to assess the problems of urban water cycle. From the water cycle analysis of Gunja basin, it was found that 75% of total rainfall occurred in the form of surface runoff, and groundwater recharge only accounted for about 7%. This suggests serious distortion of water cycle which can be attributed to urbanization. Feasibility analysis of reuse scenarios such as rainwater use and wastewater reuse was then performed to examine their influences on improving the water cycle. From the analysis of water reuse options, it was shown that imported water supply savings of 13% can be achieved through rainwater use, and water supply savings of 31% through wastewater reuse.

Effects of land use change and water reuse options on urban water cycle

2010 ◽  
Vol 22 (6) ◽  
pp. 923-928 ◽  
Author(s):  
Jiho Lee ◽  
Gijung Pak ◽  
Chulsang Yoo ◽  
Sangdan Kim ◽  
Jaeyoung Yoon
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Water Reuse ◽  
Water Cycle ◽  
Urban Water ◽  
Reuse Options ◽  
Effects Of Land Use ◽  
Urban Water Cycle

scholarly journals Integrated urban water modelling using Aquacycle model

2013 ◽  
Vol 10 (3) ◽  
pp. 310-319
Keyword(s):  
Water Cycle ◽  
Traditional Approach ◽  
Structural Characteristics ◽  
Wastewater Reuse ◽  
Balance Model ◽  
Urban Water ◽  
Multiple Use ◽  
Run Off ◽  
Athens Area ◽  
Urban Water Cycle

The traditional approach to urban water management is primarily based on a supply-oriented approach, where water follows a one-way path from supply to a single use, treatment and then discharged to the environment. The wide acknowledgement of the need to shift towards more sustainable practices has led to the recognition that demand is multi-faceted; delivered supply should correspond to the varying characteristics of users, taking into account their actual needs in terms of quantity, quality and level of reliability. Such an approach can entail the application of reuse and reclamation methods, which allow for the multiple use of water to meet higher to lower quality needs. Integrated urban water cycle modelling can be a powerful tool in estimating the potential for the application of such options, as it considers issues related to water supply, wastewater production and stormwater runoff in a holistic framework. This paper presents preliminary results from the application of an integrated urban water balance model, Aquacycle, in the Greater Athens Area. The Aquacycle model accounts for water pathways by simulating two subsystems of the urban water cycle (the rainfall-run-off network and the water supplywastewater network), and the interactions between them. The software package can also be used for evaluating alternative stormwater and wastewater reuse schemes. In this paper, Aquacycle was used for simulating water use, wastewater production and stormwater drainage in the Greater Athens Area. For applying the model, the region was divided into smaller – cluster – scales, according to specific structural characteristics. Then, the model was calibrated and validated against measured data, so that model outputs can account for the overall complexity of the Athens urban environment. Finally, three alternative scenarios, comprising the application of on-site recycling and reuse technologies were simulated and evaluated on the basis of three sustainability indicators (i.e. reduction of imported freshwater, wastewater and stormwater discharge).

Extending the water safety plan concept to the urban water cycle

Water Policy ◽  
2013 ◽  
Vol 16 (2) ◽  
pp. 298-322 ◽  
Author(s):  
M. C. Almeida ◽  
P. Vieira ◽  
P. Smeets
Keyword(s):  
Risk Management ◽  
Water Supply ◽  
Water Cycle ◽  
Integrated Approach ◽  
Urban Water ◽  
Water Safety ◽  
Adaptation To Climate Change ◽  
Safety Plan ◽  
Water Safety Plan ◽  
Urban Water Cycle

The urban water cycle (UWC) is often managed by several stakeholders dealing with specific components of the cycle such as water supply, wastewater systems and water bodies management. Therefore, risk management in the UWC benefits from an integrated approach to incorporate the interdependencies between elements. The water cycle safety plan (WCSP) provides a common risk management framework for stakeholders in the UWC. It is based on the water safety plan (WSP) approach for water supply and incorporates the latest developments in risk management approaches, such as ISO 31 000:2009 and ISO Guide 73:2009. Apart from protection of public health, the WCSP also addresses public safety and protection of the environment. The proposed WCSP is divided into nine steps including stakeholders’ commitment and team assembling, establishment of scope of the plan, characterisation of water systems, identification of risks, risk analysis and evaluation, selection of risk reduction measures, development of protocols for communication, monitoring and review. The WCSP approach was developed in the PREPARED project with a focus on UWC adaptation to climate change but can be applied in a broader context. This preventive and systematic risk approach supports decisions on adaptive measures and strategies for the whole UWC based on the best available knowledge.

scholarly journals Water reuse perceptions of students, faculty and staff at Western University, Canada

2015 ◽  
Vol 5 (3) ◽  
pp. 344-359 ◽  
Author(s):  
D. Velasquez ◽  
E. K. Yanful
Keyword(s):  
Water Resources ◽  
Water Reuse ◽  
Water Cycle ◽  
Reclaimed Water ◽  
Personal Contact ◽  
Urban Water ◽  
Faculty And Staff ◽  
The University ◽  
Urban Water Cycle ◽  
University Community

Global fresh water resources are under increasing pressure from rapidly growing demands and changing climatic conditions. Wastewater reclamation is becoming an important alternative for sustainable water resources management and building climate change resiliency in many regions around the world. Public acceptance and trust of consumers in the quality of reclaimed water is considered by many to be the most important factor determining the outcomes of water reclamation projects. Knowledge of the urban water cycle and water reuse perceptions of student, faculty and staff at Western University were investigated. Results showed that members of the university community are more likely to accept reclaimed wastewater for applications that do not involve drinking or close personal contact. Knowledge of the urban water cycle and water resources in Canada is modest among the university community with a moderate (G = 0.303, p < 0.05) positive relationship between ‘water knowledge’ and ‘close contact acceptability’. The majority of the university community (75.8%) thinks that reclaiming water to provide an alternate source of water in southwestern Ontario is a good idea, but there are still concerns about the presence of chemicals such as pharmaceuticals from reclaimed water and the long-term effects on human health from exposure to these contaminants.

Integration of seawater and grey water reuse to maximize alternative water resource for coastal areas: the case of the Hong Kong International Airport

2012 ◽  
Vol 65 (3) ◽  
pp. 410-417 ◽  
Author(s):  
R. W. K. Leung ◽  
D. C. H. Li ◽  
W. K. Yu ◽  
H. K. Chui ◽  
T. O. Lee ◽  
...  
Keyword(s):  
Hong Kong ◽  
Resource Management ◽  
Water Supply ◽  
Water Resource ◽  
Water Resource Management ◽  
Water Cycle ◽  
Urban Water ◽  
Toilet Flushing ◽  
Hong Kong International Airport ◽  
Urban Water Cycle

Development, population growth and climate change have pressurized water stress in the world. Being an urbanized coastal city, Hong Kong has adopted a dual water supply system since the 1950s for seawater toilet flushing for 80% of its 7 million inhabitants. Despite its success in saving 750,000 m3/day of freshwater, the saline sewage (consisting of about 20–30% of seawater) appears to have sacrificed the urban water cycle in terms of wastewater reuse and recycling. Can seawater toilet flushing be applied without affecting the urban water cycle with respect to sustainable water resource management? To address this issue, we examined the entire urban water cycle and developed an innovative water resource management system by integrating freshwater, seawater and reclaimed grey water into a sustainable, low-freshwater demand, low-energy consumption, and low-cost triple water supply (TWS) system. The applicability of this novel system has been demonstrated at the Hong Kong International Airport which reduced 52% of its freshwater demand.

Financial sustainability of urban water cycle services in developing countries: a case study in Mozambique

2016 ◽  
Vol 16 (4) ◽  
pp. 1068-1076
Author(s):  
A. Monteiro ◽  
J. Matos ◽  
F. Megre ◽  
A. Silva ◽  
A. Nunes ◽  
...  
Keyword(s):  
Developing Countries ◽  
Water Supply ◽  
Water Cycle ◽  
Action Plan ◽  
Integrated Approach ◽  
Financial Sustainability ◽  
Urban Water ◽  
Sanitation Services ◽  
Urban Water Cycle ◽  
Water Supply And Sanitation

A management strategy to achieve financial sustainability of urban water cycle services in developing countries is presented, based on the development of the Long Term Water Supply and Sanitation Services Investment Plan for the Water and Sanitation Infrastructure Administration (Administração de Infra-estruturas de Água e Saneamento (AIAS)) of Mozambique. AIAS is responsible for water supply and sanitation systems of 151 cities and towns (9.38 million inhabitants in 2015, 17.55 million expected in 2040). The needs in this sector are considerable, financial resources are scarce and, as a result, the Millennium Development Goals are still off track to be achieved. An integrated approach was applied to estimate the investments needs, considering differentiated levels of service depending on the urban area characteristics and taking into consideration the household income limitations, in order to achieve an economically sustainable increase in coverage and service level. The work developed resulted in an action plan aligned with the national strategy vision and adaptable to every city and town of Mozambique, including two decision support tools to enable stakeholders' decision making on potential investments: the Water and Wastewater Database (Base de Informação de Água e Saneamento) and the Dynamic Economic tool to support investments in water supply and sanitation services.

Water footprint calculation: application to urban water cycle

2016 ◽  
Vol 10 (3) ◽  
pp. 213-216
Author(s):  
Y. Penru ◽  
D. Antoniucci ◽  
M. J. Amores Barrero ◽  
C. Chevauché
Keyword(s):  
Water Footprint ◽  
Water Cycle ◽  
Urban Water ◽  
Urban Water Cycle

scholarly journals Anthropogenic organic micro-pollutants and pathogens in the urban water cycle: assessment, barriers and risk communication (ASKURIS)

2013 ◽  
Vol 25 (1) ◽  
pp. 20 ◽  
Author(s):  
Martin Jekel ◽  
Aki Ruhl ◽  
Felix Meinel ◽  
Frederik Zietzschmann ◽  
Stephan Lima ◽  
...  
Keyword(s):  
Risk Communication ◽  
Water Cycle ◽  
Urban Water ◽  
Micro Pollutants ◽  
Urban Water Cycle
Sign in / Sign up

Export Citation Format

Share Document