Comparison of the performance of horizontal and vertical flow constructed wetland planted with Rhynchospora corymbosa

Raphael, O. D. and Ojo, S. I. A. and Ogedengbe, K. and Eghobamien, C. and Morakinyo, A. O. (2019) Comparison of the performance of horizontal and vertical flow constructed wetland planted with Rhynchospora corymbosa. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION. ISSN 1522-6514; 1549-7879

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Abstract

Treatment performance of horizontal flow (HF) and vertical flow (VF) constructed wetland planted with Rhynchospora corymbosa were compared. The average porosity of the CW beds were 0.55, hydraulic retention time (HRT) of 3 days, hydraulic loading rate (HLR) and Organic Loading rate were 0.058 m/day and 3.96 (g�BOD/m2�day), respectively with a volumetric flow rate of 0.14 m3/ day. The pollutant concentration of graywater before and after its introduction to the CWs was measured using standard sampling and analyses methods. The mean removal efficiencies (RE) for HF and VF CWs were BOD, 35% and 35.4%; COD, 61.9% and 56.7%; TN, 87% and 92%; TP, 95% and 65%; TSS, 86% and 59.6%; pH, 8.8% and 12.8%, respectively. The graywater was highly contaminated in terms of nutrient and organic load. The mean values of the parameters tested for different CWs were significantly different (P�0.05). This comparative study favored HF over VF Constructed wetland with HF found to be a viable alternative for graywater treatment for organics, nutrients and suspended solids removal. The result provided insight into the performance of CWs planted with R. corymbosa.

Item Type:	Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Depositing User:	Mr DIGITAL CONTENT CREATOR LMU
Date Deposited:	09 May 2019 13:18
Last Modified:	09 May 2019 13:18
URI:	https://eprints.lmu.edu.ng/id/eprint/2153

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