Alum sludge-based constructed wetland system for enhanced removal of P and OM from wastewater: Concept, design and performance analysis

Babatunde, Akintunde, Zhao, Y. Q. and Zhao, X. H. 2010. Alum sludge-based constructed wetland system for enhanced removal of P and OM from wastewater: Concept, design and performance analysis. Bioresource Technology 101 (16) , pp. 6576-6579. 10.1016/j.biortech.2010.03.066

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Abstract

The concept, design and performanceanalysis of a four-stage novel constructedwetlandsystem (CWs) capable of enhanced and simultaneous removal of phosphorus (P) and organic matter (OM) from wastewaters is described. Alumsludge, a largely available by-product of drinking water facilities using aluminium salts as coagulant was used as the media. Under a hydraulic loading rate of 1.27 m3/m2 d and a range of organic loading rate of 279.4–774.7 g-BOD5/m2 d and 361.1–1028.7 g-COD/m2 d, average removal efficiencies (mean ± SD) of 90.6 ± 7.5% for BOD5 and 71.8 ± 10.2% for COD were achieved, respectively. Premoval was exceptional with average removal efficiency of 97.6 ± 1.9% achieved for soluble reactive P at a mean influent concentration of 21.0 ± 2.9 mg/l. Overall, the system holds great promise as a novel CWs for simultaneous removal of P and OM, and at the same time, it transforms alumsludge from a waste into a useful material.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering
Uncontrolled Keywords:	Alum sludge; Constructed wetlands; Phosphorus; Tidal flow; Self organizing maps
Publisher:	Elsevier
ISSN:	0960-8524
Last Modified:	04 Jun 2017 04:13
URI:	https://orca.cardiff.ac.uk/id/eprint/34858

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