A lab-scale study of constructed wetlands with sugarcane bagasse and sand media for the treatment of textile wastewater

Saeed, Tanveer, and Sun, Guangzhi (2013) A lab-scale study of constructed wetlands with sugarcane bagasse and sand media for the treatment of textile wastewater. Bioresource Technology, 128. pp. 438-447.

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Abstract

This paper reports the pollutant removal efficiencies of two lab-scale hybrid wetland systems treating a textile wastewater. The two systems had identical configurations, each consisting of a vertical flow (VF)and a horizontal flow (HF) wetland that were filled with organic sugarcane bagasse and sylhet sand as the main media. The systems were operated under high hydraulic loading (HL) (566–5660 mm/d), and inorganic nitrogen (254–508 gN/m²d) and organics loadings (9840–19680 gCOD/m²d and 2154–4307 gBOD₅/m²d). Simultaneous removals of BOD5 (74–79%) and ammonia (59–66%) were obtained in the first stage VF wetlands, demonstrating the efficiency of the media for oxygen transfer to cope with the high pollutant loads. The organic carbon (C) content of sugarcane bagasse facilitated denitrification in the VF wetlands. Second stage HF wetlands provided efficient color removal under predominantly anaerobic condition. Overall, the wetland systems showed stable removal performances under high, and unsteady, pollutant loadings.

Item ID: 25272
Item Type: Article (Research - C1)
ISSN: 1873-2976
Keywords: constructed wetlands, media, nitrogen, organics, shock load
Date Deposited: 05 Mar 2013 06:43
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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