Techno-economic feasibility of rainwater harvesting system for vertical aquaponics in Brunei Darussalam

Wen, Lim Zheng; Suhaimi, Hazwani; Abas, Pg Emeroylariffion

doi:10.1063/5.0109382

Cited by 2 publications

(3 citation statements)

References 30 publications

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“…UoS was higher for the period 2010-2015, with UoS of 84.9, 30.1, and 18.7 at depths of 0.25 m, 1.0 m, and 1.75 m, respectively. The higher water saving in the earlier period generally results in a higher UoS, with UoS decreasing with an increase in depth, as per Equation (13). From Figure 9, it can be seen that reliability R t varies only slightly between 42% and 45.5% with changes in the pond's surface area A res , peaking at 45.5% when A res = 60 m 2 .…”

Section: Performance Of the Rainwater Harvesting (Rwh) Systemmentioning

confidence: 82%

“…Applications of the RWH system are not only limited to religious institutions. Indeed, many studies have concluded that an RWH system is potentially beneficial in different applications, including domestic [12], commercial [23], and agricultural [13] settings. Despite this, the adoption of an RWH system is limited [49], even in tropical countries which enjoy plentiful rainfall [50].…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…The country is one of the largest consumers of both energy (23.4 kWh/day per person) and water (380 L/day per person) in the region [10], and with the plentiful abundance of both sunshine and rain, there is definite potential to utilise these renewable sources of energy and water to satisfy its demand. Much research has been conducted to explore the potential of solar energy in Brunei [11]; however, thus far, only limited research [12,13] has been conducted to look into the increasingly prominent water issues by taking advantage of the high frequency of rainfall, with an annual average yield of 3200 mm.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility Studies of Rainwater Harvesting System for Ablution Purposes

Kapli

Azis

Suhaimi

et al. 2023

Water

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For countries with an abundance of rain, there is definite potential to implement a rainwater harvesting system for different applications. This paper describes feasibility studies of an open-pond rainwater harvesting system for ablution purposes, analysing the quality of harvested rainwater and formulating a rainwater harvesting model with suitable performance measures. The formulated model can be used to analyse the feasibility of the system in any locality by inputting local meteorological data. Quality analysis has shown that the harvested rainwater can be used safely for ablution purposes, albeit with a slightly acidic pH below 6.5. At a depth of 1.0 m and using the current pond configuration of a local mosque, the reliability of the system is 62.5% (228 days per year), and the amount of water saved is 345 m3, which is 60.7% of the water demand. It has been shown that a pond surface area of 60–70 m2 provides optimum reliability and water saving, and more water savings can be expected with a more economical usage of water during ablution. These results indicate the feasibility of implementing a rainwater harvesting system for ablution purposes in religious institutions to help curb the water shortage crisis.

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Section: Performance Of the Rainwater Harvesting (Rwh) Systemmentioning

confidence: 82%

Section: Discussion Of Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Feasibility Studies of Rainwater Harvesting System for Ablution Purposes

Kapli

Azis

Suhaimi

et al. 2023

Water

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At What Price Are Farmers Willing to Reduce Water Usage? Insights from the Aosta Valley

Moino,

Caracciolo,

Borsotto

et al. 2024

Water

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As climate change and decreasing precipitation worsen water scarcity, understanding farmers’ willingness to reduce water usage is crucial. This study examines this issue in the Aosta Valley, a region facing unique challenges due to its mountainous terrain and high water management costs. The aim is to evaluate farmers’ willingness to reduce water usage and the economic incentives needed to encourage water-saving strategies. To gather the data, 100 farmers participated in a survey that included a discrete choice experiment. The findings revealed that 75% of farmers were unwilling to reduce their water usage even with proposed monetary compensation (EUR 100–120 per hectare per year). On average, the additional compensation farmers would accept for a 10% reduction in water usage was estimated at EUR 360 per hectare per year. This high compensation demand suggests a disconnect between individual desires and economic feasibility. The key reasons for their reluctance included the belief that their current water usage is already optimized, inadequate compensation for potential economic losses and concerns about water shortage. The study highlights the need to understand the socio-cultural context when designing water management policies. Combining economic incentives with social and educational initiatives is likely more effective for promoting sustainable water practices.

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Techno-economic feasibility of rainwater harvesting system for vertical aquaponics in Brunei Darussalam

Cited by 2 publications

References 30 publications

Feasibility Studies of Rainwater Harvesting System for Ablution Purposes

Feasibility Studies of Rainwater Harvesting System for Ablution Purposes

At What Price Are Farmers Willing to Reduce Water Usage? Insights from the Aosta Valley

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