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1 – 2 of 2Muhammad Waresul Hassan Nipun, Md Ashik-Ur-Rahman, Sharmin Yousuf Rikta, Afshana Parven and Indrajit Pal
The effects of population growth in the developing world and climate change have increased the stress on available water resources. The majority of Rajshahi city, Bangladesh, is…
Abstract
Purpose
The effects of population growth in the developing world and climate change have increased the stress on available water resources. The majority of Rajshahi city, Bangladesh, is facilitated with groundwater withdrawal. As Bangladesh is a country of monsoon climate, reserved rainwater can be contributed as an alternative to extracted groundwater. This study aims to develop a framework for rooftop rainwater harvesting (RRWH) for domestic purposes and estimate the appropriate size of the storage tanks and their costs required to fulfill the annual drinking and cooking water demands through RRWH in Rajshahi city of Bangladesh.
Design/methodology/approach
A total of 100 single-story residential dwellings with varying rooftop areas were surveyed for the projection of RRWH potential. The relationship between the size and cost of a water tank and the rooftop areas of different houses is expressed using a general mathematical equation. Cost estimates for the proposed RRWH system for all houses have been completed, and a cost model illustrating the relationship between rooftop or catchment area and associated cost of RRWH system has been developed.
Findings
This study reveals that a maximum of 110.75 m3/year rainwater can be collected from a 100 m2 rooftop area of Rajshahi city. Moreover, this study finds that such harvesting of rainwater can reduce municipal water supply to the extent of almost 75%. Water samples collected from rooftops also revealed that if germs were removed through bacteria treatment, the collected rainwater potentially can be used for drinking and cooking purposes.
Originality/value
The novelty of this study is that it focused mainly on how significant RRWH can be to meet people’s daily required amount of water for household purpose and ascertain the cost reduction using the RWH method. This paper also is unique as it assessed the volume of the storage tank that is sufficient to distribute the necessary amount of water for drinking and cooking purpose as a sustainable alternative source in the dry season.
Details
Keywords
Amarpreet Singh Ghura and Abhishek Abhishek
The case provides an opportunity for participants to step into the shoes of Doshi and plan a way to expand Vardhman Envirotech (VE) business by either entering the government…
Abstract
Complexity academic level
The case provides an opportunity for participants to step into the shoes of Doshi and plan a way to expand Vardhman Envirotech (VE) business by either entering the government segment or by undertaking international market expansion. In doing so, participants should understand the existing strategy by taking into consideration the aspects regarding the manner in which VE’s Injection Recharge Well differs from the existing recharge well solutions. VE lack of experience in government segment, as well as international markets provides an interesting context for the case discussion wherein participants have to examine the positives and challenges of both expansion opportunities and decide the way forward.
Supplementary materials
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Subject code
CSS3: Entrepreneurship.
Details