Tertiary treatment of abattoir wastewater in a horizontal subsurface flow-constructed wetland under tropical conditions
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Environment and Waste Management
Abstract
A horizontal subsurface flow-constructed wetland (HSSF-CW) system planted with Cyperus papyrus was used to polish abattoir wastewater pre-treated in anaerobic and aerobic sequencing batch reactors at City Abattoir, Kampala. The HSSF-CW was 13 m long, 5 m wide, and was filled with gravel up to a depth of 0.6 m, of which 0.55 m was saturated with wastewater at
hydraulic retention time (HRT) of 1.16 days. The percentage removals for turbidity, ammonium-nitrogen (NH4-N), total nitrogen (TN), orthophosphate (o-PO4-P), total phosphorus (TP), chemical oxygen demand (COD) and faecal coliform were 76, 48, 46, 74, 63, 60, and 100, respectively. Among different plant tissues investigated (roots, culm, sheath and umbel), nitrogen
concentration was highest in the sheath. The different parts of plants also had different concentrations of phosphorus, with the culm having the highest concentration. Compared to literature, the percentage removals for organic
Description
Keywords
abattoir wastewater, nutrients, constructed wetland system
Citation
Odong, R., Kansiime, F., Omara, J., & Kyambadde, J. (2015). Tertiary treatment of abattoir wastewater in a horizontal subsurface flow-constructed wetland under tropical conditions. International Journal of Environment and Waste Management, 15(3), 257-270.