alexa Feasibility of a Filtration-Adsorption Grey Water Treatment System for Developing Countries | OMICS International | Abstract
ISSN: 2157-7587

Hydrology: Current Research
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Special Issue Article

Feasibility of a Filtration-Adsorption Grey Water Treatment System for Developing Countries

Chidozie C Nnaji1*, Cordelia N Mama1, Arinze Ekwueme1 and Terlumun Utsev2
1Department of Civil Engineering, University of Nigeria, Nsukka, Nigeria
2Department of Civil Engineering, University of Agriculture, Makurdi, Nigeria
Corresponding Author : Chidozie C Nnaji
Department of Civil Engineering
University of Nigeria, Nsukka, Nigeria
Tel: +2348038948808
E-mail: [email protected]
Received June 18, 2013; Accepted July 18, 2013; Published July 24, 2013
Citation: Nnaji CC, Mama CN, Ekwueme A, Utsev T (2013) Feasibility of a Filtration-Adsorption Grey Water Treatment System for Developing Countries. Hydrol Current Res S1:006. doi: 10.4172/2157-7587.S1-006
Copyright: © 2013 Nnaji CC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

The performance and economic viability of a simple inexpensive grey water treatment system consisting of a
filtration unit and an adsorption unit was evaluated. At steady state, the overall performance of the combined system
was 85.68% BOD removal, 57.09% COD removal and 70.74% TSS removal. Most of the BOD removal (83.6%) was
achieved in the filtration unit, while most of the fecal coliform removal was achieved in the adsorption chamber. The
pH of the entire system remained stable (7.6 ± 0.29) throughout the experiment. The dissolved oxygen concentration
of the final effluent was 1.3 ± 0.28, indicating the need for aeration. Problems with carbon particle washout were
observed in the adsorption chamber. Generally, the final effluent was found to be suitable for a range of uses such as
toilet flushing, irrigation and fire protection. An economic analysis showed that 77.5% savings in water expenditure
can be achieved if a simple greywater treatment is installed for toilet flushing.

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