Management and valuation of rainwater by alternative techniques, case of the university of Settat, in Morocco

Abstract

Our research consists in designing a new system of management and valuation of rainwater with the aim of securing the supply of drinking water.

For this, our study was conducted with a view to the collection, storage, treatment, and distribution of rainwater in compliance with the standards in force for use, based on alternative techniques and using modeling software EPA SWMM5, to optimize the dimensioning of the necessary structures.

Thus a case study of the University of Settat in Morocco, with an area of 6.56 Ha, with intense rain of 42 mm/h over a period of 30 min, and an average annual rain of 372 mm/year, the result obtained is very important: a collection of rainwater of 334.8 L/m²/year, towards reservoirs with an overall capacity of 1336.20 m³, to be used to supply toilet flushes, irrigation of surrounding green spaces without the use of drinking water, thus saving drinking water consumption and a significant gain on investment and on the operation of rainwater structures.

Thus, in a limited area, more than 50% can be saved on drinking water consumption, by collecting rainwater, thus securing drinking water consumption in the future in the face of water shortage.