The effects of elements mass balance from turf grass irrigated with laundry and bathtub greywater

Radin Mohamed, Radin Maya Saphira and Mohd Kassim, Amir Hashim and Anda, Martin and Dallas, Stewart (2014) The effects of elements mass balance from turf grass irrigated with laundry and bathtub greywater. International Journal of Applied Environmental Sciences, 9 (4). pp. 2033-2049. ISSN 0973-6077

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Abstract

Greywater reuse is increasing as a measure to mitigate declining potable water supplies in many arid and semi-arid countries. In Perth, Western Australia,garden irrigation with greywater has grown popular for householders to keep their plants sustained, especially during long hot summers. However, the sandy soils of the Swan Coastal Plain allow for the rapid transport of contaminants through the soil profile, potentially affecting the underlying shallow aquifer. Hence, this study was conducted to determine the nutrient leaching from the couch grass (Cynodon dactylon L.) sod, on a free-draining sandy soil, irrigated with laundry and bathtub greywater. The experiment was used a modified aquarium tank and the irrigation was sourced from the family house following: (i) irrigating with 100% potable water as a control (TW) (ii)irrigating with untreated full cycle laundry water (LGW) (iii) irrigating with untreated bathtub water (BGW). Nine elements; salts: Na and Cl; macronutrients: P, K, Ca, Mg; and micronutrients: B, Al and Zn and their leaching was assessed by measuring their mass balance. Irrigation with LGW and BGW in sand resulted in significant leaching of some Mg and Al. The mass balance showed an increased amount of stored Na, Cl, P and K in the soil at the end of the study. There was an increase in salt content (Na, Cl) and B uptake that affected turf grass growth. Consequently, the turf grass requires the addition of the losses nutrients in the turf grass fertilization programme to supplement growth.

Item Type:Article
Uncontrolled Keywords:greywater reuse; mass balance; elements; laundry; bathtub; sandy soil; turf
Subjects:T Technology > TD Environmental technology. Sanitary engineering > TD172-193 Environmental pollution
Divisions:Faculty of Civil and Environmental Engineering > Department of Water and Environmental Engineering
ID Code:6193
Deposited By:Dr Radin Maya Saphira Radin Mohamed
Deposited On:10 Nov 2014 16:25
Last Modified:10 Nov 2014 16:25

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