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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Greywater Management in Bahraini Schools, Jaw School—Case Study
Author(s)
Nagib Ghaleb N. Mohammed, Mariam Almajed, Safa Albeladi and Fatima Mohammed
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DOI:10.17265/2162-5298/2020.01.004
Affiliation(s)
Civil Engineering Department, University of Bahrain, Zallaq 5414, Kingdom of Bahrain
ABSTRACT
The greywater management by
treating and reusing is an important issue to provide a new source of water
that will not cost as much as using clean water. In general, the water demand in
the world is increasing with the increased population, thus it can lead to a
water crisis. To reduce the effect of this problem, greywater treatment system
can be applied. The greywater in schools is gone to waste every single day, so
to provide a logical, cheap and effective solution to manage this problem is to
treat and reuse greywater in irrigation, since it does not necessarily need
clean water. The aim of this manuscript is to manage and reuse the greywater to
reduce the water crises, design an economical greywater system that will act as
an investment to the school, and decrease the pressure on sewage system. The
paper also aims to identify the wastewater characteristics generated from
schools. Therefore, three samples of greywater from water basins and three
samples from the kitchen were collected to test and analysis. The analysed parameters
are BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), pH, SO4,
TDSs (Total Dissolved Solids),
Cl, turbidity, Ca, Mg, NO3 and TH (Total Hardness). The results
showed that, the samples collected from the basins are in the accepted range,
however the samples of the kitchen have a higher concentration in SO4,
BOD, turbidity and nitrate, therefore the greywater generated from the kitchen
has been excluded from the greywater system. In terms of the cost, the results
indicated that the payback cost could be returned in three years.
KEYWORDS
Greywater, management, schools.
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