Fragmented landscapes of water supply in suburban Hanoi

Wright-Contreras, Lucía; March, Hug; Schramm, Sophie

doi:10.1016/j.habitatint.2017.02.002

Cited by 33 publications

(23 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The optimal size for Hanoi is observed at approximately 2.2 m 3 with the corresponding minimum average annual water cost of 1.46 million VND, whereas the annual water cost is 1.64 million VND if they rely on public water supply only (tank size = 0 m 3 ). The optimal tank of 2.2 m 3 provides approximately 11% reduction of annual water cost in Hanoi during the whole tank lifetime, while the above annual water cost without using rainwater harvesting (1.64 million VND) is deemed affordable for a moderate-income household (Wright-Contreras et al, 2017). The average annual water cost is equal to or less than the cost of public water supply only over a range of tank size from 0 through to 13 m 3 , while the profitable range decreases in width (0 to 8 m 3 ) if the maximum annual cost (the upper end of the light gray band) is considered.…”

Section: Finding Optimal Tank Sizementioning

confidence: 99%

Exploring optimal tank size for rainwater harvesting systems in Asian tropical climates

Nguyen

Ichikawa

Ishidaira

2018

Hydrological Research Letters

View full text Add to dashboard Cite

This paper explores optimal tank size for domestic rainwater harvesting systems in Asian tropical climates. A total of 128 locations in Vietnam covering three regional climate patterns were selected for the study. The system behavior was simulated on a daily basis using between 27 and 32 years of rainfall data. Annual water cost was investigated to determine optimal tank size. The relationship among optimal size, climate and system conditions was also analyzed. Results of the study emphasize the economic benefit of rainwater harvesting for the whole study area. The optimal tank size for a non-potable rainwater harvesting system has a range of 1.2-2.6 m 3 , exhibiting 19-65% supply efficiency and a payback period of 7-17 years. Extended system scenarios reveal a contrast in the influences of demand and roof area on optimal size in relation to rainfall amount. The roof area is critical in determining optimal size in the low rainfall area while the demand is important in the high rainfall area. Although there is a certain degree of variability in optimal tank size, it does not considerably undermine the economic benefit of a rainwater harvesting system.

show abstract

Section: Finding Optimal Tank Sizementioning

confidence: 99%

Exploring optimal tank size for rainwater harvesting systems in Asian tropical climates

Nguyen

Ichikawa

Ishidaira

2018

Hydrological Research Letters

View full text Add to dashboard Cite

show abstract

“…Therefore, the communication costs can be lowered. However, the transmission costs can also be high when there is more than one joining attribute in one relation [25]. This is because more than one joining attribute, once projected, may lead to a huge amount of temporary relations.…”

Section: Design Of All Reduction Algorithms Based On the Semijoinmentioning

confidence: 99%

Assessment of Urban Water Supply System Based on Query Optimization Strategy

Shang

et al. 2018

Complexity

View full text Add to dashboard Cite

As a complicated water treatment system project, an urban water supply plays a significant role in enhancing ecological civilization construction, promoting social-economic sustainable development, and improving the living environment of humans. This paper has the goal of improving water treatment efficiency and reducing water treatment cost based on comparative studies by applying two types of distributed database query optimization methods, including the system for a distributed database (SDD-1) and all reduction algorithms. The approach involves the components of partial relations and deletes the database components that are unrelated to a query, using only attributes related to a query. Thereby, the realization process becomes simple, with a small amount of transmitted data. The results show that the validity and convenience of all reduction algorithms involve the whole query process. An algorithm is independent of the chart of static characteristics and can realize all reduction states without depending on analyzing the benefits from intermediate semijoin results, which will ultimately contribute to reductions in the transmission of useless data in the network and communication costs. Implementation of the query optimization strategy can improve water treatment efficiency, reduce water treatment cost, lower water treatment expense, and implement effective communication.

show abstract

“…At the city level, a range of concepts have been proposed for the application of IWRM principles, including Integrated or Sustainable Urban Water Management (IUWM) [2][3][4][5][6], Total Water Cycle Management [7], Water Sensitive Urban Design or Cities [8,9]. While these concepts have different emphases, they all reflect a shift from traditional, centralised engineeringfocused management towards approaches which take into account system-level interlinkages and user preferences [10].…”

Section: Introductionmentioning

confidence: 99%

“…The benefits of distributed systems may be particularly high in cities in developing country cities where urban water systems are highly fragmented in terms of sources, technologies and actors, leading to poor and unequal outcomes [14,15]. Households in these cities are obliged to patch together water supply for different uses from a range of sources, sometimes leading to the unsustainable use of local water resources [10]. However, the failure of existing models in these challenging urban contexts may provide the opportunity and incentives for transitions to integrated water governance and management [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Urban water systems: Development of micro-level indicators to support integrated policy

Jensen

Khalis

2020

PLoS ONE

View full text Add to dashboard Cite

Urban water systems involve complex interactions between ecological, social and economic factors. Integrated management approaches are needed to achieve multiple policy objectives in the sector and can be pursued at a range of spatial scales. Small-scale integrated water projects are both feasible and valuable in dynamic urban environments in developing countries. This paper develops a method for the prioritization of localities for integrated projects and applies this to the city of Jakarta. A set of indicators is defined following a systems approach, populated, displayed through a dashboard and mapped, and the relationships between indicators are analysed. Indicator-based prioritization allows policy-makers to guide resources to integrated projects to contribute effectively to the achievement of policy goals. OPEN ACCESSCitation: Jensen O, Khalis A (2020) Urban water systems: Development of micro-level indicators to support integrated policy. PLoS ONE 15(2): e0228295. https://doi.org/10.

show abstract

Fragmented landscapes of water supply in suburban Hanoi

Cited by 33 publications

References 20 publications

Exploring optimal tank size for rainwater harvesting systems in Asian tropical climates

Exploring optimal tank size for rainwater harvesting systems in Asian tropical climates

Assessment of Urban Water Supply System Based on Query Optimization Strategy

Urban water systems: Development of micro-level indicators to support integrated policy

Contact Info

Product

Resources

About