A Sustainability Assessment of the Rainwater Harvesting System for Drinking Water Supply: A Case Study of Cukhe Village, Hanoi, Vietnam

Nguyen, Duc Canh; Dao, Anh Dung; Kim, Tschung Il; Han, Myung Joo

doi:10.4491/eer.2013.18.2.109

Cited by 28 publications

(9 citation statements)

References 1 publication

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“…Rainwater harvesting (RWH) is a potential and sustainable alternative water source to solve water shortage problems, in particular, in developing countries (Mayo & Mashauri 1991;Nguyen et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of rainwater harvesting system and strategy for dry season challenge

Mwamila

Han

Ndomba

et al. 2016

Water Practice and Technology

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The extensive application of rainwater harvesting (RWH) projects is inhibited by the challenge posed by the dry seasons. In a case study of Mnyundo Primary School, Tanzania, the performance of the RWH system was evaluated using a daily water balance model. The methodology is based on defined dry season parameters – no water days (NWDs), rainwater usage ratio (RUR), and water level in local water storages; while the system operational methods involve users adopting either fixed (constant) demand or variable demand (demand varying with respect to available water in the storage tank), throughout the system utilization. Additionally, the cost of installing an RWH system to achieve a substantial reduction of NWDs to zero was calculated. It was established that the existing system cannot achieve zero NWDs under consideration of both operational methods. However, the greater the number of tanks, the lower the NWD, and in the variable demand operational method, better RUR was achieved. For mitigating water shortages in the dry season, the school should adopt RWH in two buildings under the demand scenario (300 ≤ demand ≤ 900 L/d, for the respective water levels in the storage tanks), yielding 58% RUR. The performance of the system can be improved by monitoring water levels and adhering to demand guidelines. These are useful strategies for practitioners in water supply.

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Section: Introductionmentioning

confidence: 99%

Performance evaluation of rainwater harvesting system and strategy for dry season challenge

Mwamila

Han

Ndomba

et al. 2016

Water Practice and Technology

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“…Daily rainfall data is collected in Hanoi city for a typical dry year of 2005. Although the typical roof area is 100 m 2 , it is possible to expand the roof area by using canvas fabric catchment or locally available materials (Nguyen et al 2013). The roofs of nearby buildings can be used to increase the catchment area.…”

Section: Design Conditionmentioning

confidence: 99%

“…The situation is expected to worsen in the future and may occur even in some remote areas in developed countries as well. Rainwater harvesting (RWH) from rooftops is drawing interest as an alternative source of safe drinking water in developing countries (Nguyen et al 2013;Mwamila et al 2015;Temesgen et al 2015;. If a RWH system (RWHS) is well designed and carefully operated, rainwater can be a potential source of drinking water with minor or even no treatment (Amin et al 2009;Nguyen & Han, 2014).…”

Section: Introductionmentioning

confidence: 99%

Hydrological Design of Multipurpose Micro-catchment Rainwater Management

Han¹,

Nguyen²

2018

Water Intell Online

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Recently, there have been several global water problems, such as flooding, drought, water shortage, water pollution, and groundwater depletion. All of these issues are related to rainwater: flooding occurs because of excessive rainwater; drought and water shortage are results of a reduced rainfall; non-point source pollution occurs during rainfall; and groundwater depletion results from reduced rainwater infiltration in areas where the number of impermeable surfaces has increased. Therefore, proper rainwater management (RWM) is required to mitigate most of these global water issues, thus ensuring sustainability and enhancing the resilience of the existing water infrastructure. The fundamental questions regarding RWM are: 'Rainwater-Drain or Collect?' and 'How do we make everybody happy?'

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“…Rainwater can be a good water source when emergencies last from mid to longer periods, where there is time to investigate yields, and if appropriate catchment and storage facilities are available ( House and Reed, 1997 ). When compared with surface water, the raw water quality of rainwater is much safer, and less prone to contamination if properly managed and capable of meeting the WHO drinking water standards with no energy requirement in areas where there is an abundant annual rainfall ( Parker et al, 2013 ; Nijhof et al, 2010 ; Worm & Hattum, 2006 ; Thomas & Martinson, 2007 ; Rodrigo et al, 2009 ; Ndomba & Wambura, 2010 ; Nguyen et al, 2013 ; Temesgen et al, 2015 ). As a result, it has been suggested as an alternative potable water source to the piped system in different setups including during public health emergencies ( Kim et al, 2012 ; House and Reed, 1997 ).…”

Section: Introductionmentioning

confidence: 99%

Estimation of rainwater harvesting potential for emergency water demand in the era of COVID-19. The case of Dilla town, Southern, Ethiopia

Kanno

Ashuro

Abate

et al. 2021

Environmental Challenges

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Safe and adequate quantity of water is crucial for the implementation of infection prevention and control measures during the prevention of COVID-19. Rainwater harvesting could be an optional water source to fulfill or support the emergency water demand in areas where there is abundant rainfall. The study aimed to assess the rainwater harvesting potential and storage requirements for households and selected institutions and to determine its adequacy to satisfy the emergency water demand for the prevention of COVID-19 in Dilla town, Southern Ethiopia. Rainwater harvesting potential for households and selected institutions were quantified using 17 years’ worth of rainfall data from the Ethiopian Meteorology Agency. To address the rainfall variability, we computed the confidence limits of monthly harvest-able rainwater potential using confidence intervals about the mean as well as confidence intervals using Coefficient of Variation (COV) of monthly rainfall. The storage requirements were also estimated by considering the driest and west seasons and months. The average annual rainfall in Dilla town was 1464 mm. Households with a roof area of 40 m 2 and 100 m 2 have the potential to harvest 7.2-39.66 m 3 and 19.11-105.35 m 3 of rainwater respectively. Similarly, the rainwater harvesting potential for the selected institutions was in the range of 34524.5-190374.5m 3 , 4070.8-14964.8 m 3 , 1140.4-6288.6 m 3 , 4561.7-25154.3 m 3 , 5605.8-14152.8 m 3 , and 402.4-2219.1 m 3 of rainwater for colleges, vocational schools, secondary schools, primary schools, Dilla University Referral Hospital and health centers respectively. These institutional rainwater harvesting potentials can address, 24-132.2, 222.4 -817.8, 59.4-327.3, 34.6-190.9, 94.5-238.5, and 28.2-155.7 % of the colleges, vocational schools, secondary schools, primary schools, Dilla University referral hospital, and Rainwater can be an alternative water source for the town in the fight against COVID-19. Further applied researches must be conducted that can address the rainwater quality and treatment for ease of use.

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A Sustainability Assessment of the Rainwater Harvesting System for Drinking Water Supply: A Case Study of Cukhe Village, Hanoi, Vietnam

Cited by 28 publications

References 1 publication

Performance evaluation of rainwater harvesting system and strategy for dry season challenge

Performance evaluation of rainwater harvesting system and strategy for dry season challenge

Hydrological Design of Multipurpose Micro-catchment Rainwater Management

Estimation of rainwater harvesting potential for emergency water demand in the era of COVID-19. The case of Dilla town, Southern, Ethiopia

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