A novel alum-sludge based Constructed Wetland system to reduce pollution effects of agricultural run-off: first results
by A.O. Babatunde, Y.Q. Zhao
International Journal of Water (IJW), Vol. 3, No. 3, 2007

Abstract: This paper is a research brief highlighting the development of a novel alum-sludge based Constructed Wetland (CW) system aimed at reducing the pollution effects of agricultural run-offs. Alum sludge is a by-product of drinking water treatment plants where aluminium sulphate is used as coagulant. The alum sludge cakes were used as the main support matrix in the constructed wetland system, having been shown to have a greater capacity to retain contaminants, especially phosphorus, through sorption phenomena, ionic exchange and other physico-chemical processes. The dewatered alum-sludge cakes used proved beneficial in enhancing and sustaining phosphorus removal in the system, and the removal of organics is thought to be enhanced by the tidal flow mechanism employed. Overall removal of 82.3 ± 3.5% (BOD5) and 85.5 ± 2.1% (COD) was achieved in the system.

Online publication date: Thu, 27-Sep-2007

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Water (IJW):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com