ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 02  NO. 04 OCTOBER 2014:

Title:           Feasibility of rooftop rainwater harvesting in coastal areas: a case study
Authors:     A. S. M. Asif Iqbal, Kh. Mahbub Hassan
Abstract:   In the coastal belt region of Bangladesh suitable water sources are scares. The coastal belt suffers from high salinity in groundwater sources for the development of water supply system. In this situation,rainwater harvesting may be a better solution as an alternative solution. The coastal and hilly regions of Bangladesh usually receive heavy rainfall during the rainy seasons and little in dry periods. In this study, a pilot project on rooftop rainwater harvesting (RWH) was undertaken in the Khulna University of Engineering &Technology (KUET) campus to evaluate its feasibility for large scale application in the coastal areas of the country. The potential rainwater harvesting scheme, having an estimated 27000 m2 of rooftop catchment area,was found adequate to fulfill the drinking water demands for the present population of 4550 persons in KUETcampus. The shortage of rainwater in dry periods would be supplemented by storing surplus water during the rainy season. From available data, it was found that the average annual rainfall in Khulna region was approximately 1800 mm/yr. The pilot study has been carried out in Bldg-14 at KUET campus with an expected total population of 30 persons. The required drinking water storage volume was determined 13.62 m3 and 17.73m3 using ‘Mass Curve Method’ and ‘Area Consumed and Volume Consumed (Ac-Vc) Method’, respectively..

Keywords: Coastal Areas, Feasibility Study, Rain Water Harvesting, Rooftop Catchment, Sand Filtration
Pages:        255-261

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