Performance of the Giant Reed (Arundo donax) in experimental wetlands receiving variable loads of industrial stormwater

Idris, Shaharah Mohd, Jones, Paul L., Salzman, Scott A. and Allinson, Graeme 2012, Performance of the Giant Reed (Arundo donax) in experimental wetlands receiving variable loads of industrial stormwater, Water, air and soil pollution, vol. 223, no. 2, pp. 549-557.

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Title Performance of the Giant Reed (Arundo donax) in experimental wetlands receiving variable loads of industrial stormwater
Author(s) Idris, Shaharah Mohd
Jones, Paul L.ORCID iD for Jones, Paul L.
Salzman, Scott A.ORCID iD for Salzman, Scott A.
Allinson, Graeme
Journal name Water, air and soil pollution
Volume number 223
Issue number 2
Start page 549
End page 557
Total pages 9
Publisher Springer
Place of publication Amsterdam, The Netherlands
Publication date 2012
ISSN 0049-6979
Keyword(s) arundo donax
constructed wetlands
dairy factory stormwater
nutrient removal
phragmites australis
Summary Two emergent macrophytes, Arundo donax and Phragmites australis, were established in experimental subsurface flow, gravel-based constructed wetlands (CWs) and challenged by untreated stormwater collected from the hard-pan and other surfaces of a dairy processing factory in south-west Victoria, Australia. The hydraulic loading rate was tested at two levels, sequentially, 3.75 and 7.5 cm day -1. Some of the monitored variables were removed more efficiently by the planted beds in comparison to unplanted CWs (biochemical oxygen demand (BOD), total nitrogen (TN) and total phosphorus (TP); p<0.007) but there was no significant difference between the A. donax and P. australis CWs in removal of BOD, suspended solids (SS) and TN (p>0.007) at 3.75 cm day -1 or SS and TN at 7.5 cm day -1. At 3.75 cm day -1, BOD, SS, TN and TP removal in the A. donax and P. australis CWs was 71%, 61%, 78% and 75% and 65%, 60%, 73% and 41%, respectively. Nutrient removal at 7.5 cm day -1 in the A. donax and P. australis beds was 87%, 91%, 84% and 71% and 96%, 94%, 87% and 55%, respectively. As expected, the A. donax CWs produced considerably more biomass (10±1.2 kg wet weight) than the P. australis CWs (2.7±1.2 kg wet weight). This equates to approximately 107 and 36 tonnes ha -1 year -1 biomass (dry weight) for A. donax and P. australis, respectively (assuming 250 days of growing season and singlecut harvest). The performance similarity of the A. donax- and P. australis-planted CWs indicates that either may be used in HSSF wetlands treating dairy factory stormwater, although the planting of A. donax provides additional opportunities for secondary income streams through utilisation of the biomass produced.
Language eng
Field of Research 100203 Bioremediation
Socio Economic Objective 960912 Urban and Industrial Water Management
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, Springer Science+Business Media B.V.
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