Substrates for phosphorus removal-potential benefits for on-site wastewater treatment?
1Department of Public Technology, Mälardalen University, P.O. Box 883, SE-721 23 Västerås, Sweden. lena.johansson.westholm@mdh.se
Abstract:
A large number of substrates potential for removal of phosphorus (P) in wastewater has been reviewed. The substrates consist of natural materials, industrial by-products and man-made products. Most substrates have been investigated in batch and column studies in the laboratory; others have also been tested in field trials. The results from these investigations vary, but a few substrates, e.g. wollastonite, slag material and, to some extent, light weight aggregate products, have demonstrated promising properties with regard to P-sorption capacity and hydraulics. The problems of normalisation of data are discussed, as well as the substrates potential benefits for on-site wastewater treatment.
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