Maximum allowable values of the heavy metals in recycled water for household laundry

Elsevier B.V.
Publication Type:
Journal Article
Science of the Total Environment, 2013, 452-453 (1), pp. 427 - 432
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Household laundry as a new end use of recycled water in dual reticulation systems has a great potential as the significant amount of potablewater fromurban households can be saved. However, there is still no sufficient evidence and supporting recycledwater quality guidelines for this particular use. A key gap in knowledge is the impact of heavymetals in recycledwater on clothes and washingmachines. Thus, this study aims to determine the maximumallowable values (MAVs) of the heavy metals iron (Fe), lead (Pb), zinc (Zn), copper (Cu), andmanganese (Mn) in recycled water for washing clothes in washing machines. Six different concentrations of each targeted metals were prepared in tap water for the washing machine experiments. The tearing/tensile strength tests were used for the assessment of cloth durability.MINITAB 16 as a statistical tool was used and ANOVA one way testwas applied for the significance analysis (Turkey's test p b 0.05). The results show that theMAVs of the heavy metals Fe, Pb, Zn, Cu and Mn were found to be 1 mg/l, 1 mg/l, 10 mg/l, 5 mg/l and 1 mg/l respectively in terms of cloth durability.
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