Introduction and feasibility assessment of laundry use of recycled water in dual reticulation systems in Australia.

Laundry is a potential new end use of recycled water in dual reticulation systems. Generally, the community is willing to accept this new end use if it can meet the concerns on health issues, durability of washing machine, cloth quality and aesthetic appearance. This study addresses all these major concerns thereby assisting in the introduction and promotion of this new end use in the existing and proposed dual reticulation systems. Five representative cloth materials were selected for washing in tap water and in recycled water for up to 50 wash cycles for comparative studies. The tearing/tensile strength tests were used for the assessment of cloth durability. ANOVA one way test was applied for the significance analysis (Tukey's test p<0.05) which indicated that there is no significant change in the tensile/tearing strengths of washed cloth samples. Scanning electron microscope (SEM) images of the washed cloth samples found no distinct change in surface morphology. Textile colour analysis (CIEDE2000) analysed the variation in colour of the washed cloth samples and showed that the change in colour ∆E ranges from 0-1 revealing no visible difference in colour of cloth samples. Langelier Saturation Index (LSI) was used as the indicator for predicting corrosive/scaling potential of recycled water. The LSI values ranged from +0.5 to -0.5, indicating no corrosive or scaling potential of recycled water. The microbiological study of the cloth samples washed in recycled water indicated that there was no contamination with representative bacteria. As the recycled water has similar effects like tap water on cloth and washing machine, it is safe to use for laundry.

[1]  K. Oana,et al.  Bactericidal activities of woven cotton and nonwoven polypropylene fabrics coated with hydroxyapatite-binding silver/titanium dioxide ceramic nanocomposite “Earth-plus” , 2011, International journal of nanomedicine.

[2]  Bandita Mainali,et al.  Feasibility assessment of recycled water use for washing machines in Australia through SWOT analysis , 2011 .

[3]  Rodney Anthony Stewart,et al.  Pimpama-Coomera dual reticulation end use study: pre-commission baseline, context and post-commission end use prediction , 2010 .

[4]  Takashi Asano,et al.  Milestones in Water Reuse: The Best Success Stories , 2012 .

[5]  Vitaly A. Prisyazhniuk.  Prognosticating scale-forming properties of water , 2007 .

[6]  Wencheng Wu,et al.  The CIEDE2000 color-difference formula: Implementation notes, supplementary test data, and mathematical observations , 2005 .

[7]  A. Oller,et al.  Staphylococcus aureus recovery from cotton towels. , 2009, Journal of infection in developing countries.

[8]  M. Luo,et al.  The development of the CIE 2000 Colour Difference Formula , 2001 .

[9]  Stuart J. Khan,et al.  Stakeholder communications for successful water reuse operations , 2006 .

[10]  Alice N. Neely,et al.  Survival of Enterococci and Staphylococci on Hospital Fabrics and Plastic , 2000, Journal of Clinical Microbiology.

[11]  M. Sinclair,et al.  A series of exposure experiments- Recycled water and alternative water sources: Part B - Microbial transfer efficiency during machine clothes washing and microbial survival turf-grass experiments. , 2008 .

[12]  Anna Hurlimann,et al.  What Attributes of Recycled Water Make it Fit for Residential Purposes? The Mawson Lakes Experience , 2006 .

[13]  S. Dolnicar,et al.  Recycled water for consumer markets - : a marketing research review and agenda , 2006 .

[14]  Syed A. Imran,et al.  Modified Larsons Ratio Incorporating Temperature, Water Age, and Electroneutrality Effects on Red Water Release , 2005 .

[15]  Piet Bijl,et al.  The perception of static colored noise: Detection and masking described by CIE94 , 2008 .

[16]  Fred W. Billmeyer,et al.  Assessment of Color‐Measuring Instruments , 1981 .

[17]  J. M. Anderson.  Integrating recycled water into urban water supply solutions , 2006 .

[18]  N. Apostolidis,et al.  Water Recycling in Australia , 2011 .

[19]  G. J. Dixon,et al.  Factors affecting the persistence of Staphylococcus aureus on fabrics. , 1969, Applied microbiology.

[20]  Noreddine Ghaffour,et al.  Physical and chemical assessment of MSF distillate and SWRO product for drinking purpose , 2012 .

[21]  Amit Gross,et al.  Removal of chemical and microbiological contaminants from domestic greywater using a recycled vertical flow bioreactor (RVFB) , 2007 .

[22]  I. Frydrych,et al.  Protective clothing – test methods and criteria of tear resistance assessment , 2005 .

[23]  Thi Thu Nga Pham,et al.  Maximum allowable values of the heavy metals in recycled water for household laundry. , 2013, The Science of the total environment.

[24]  Charles H. Hacker,et al.  Residential potable and recycled water end uses in a dual reticulated supply system , 2011 .

[25]  Roderick McDonald,et al.  Colour Physics for Industry , 1987 .

[26]  M. Luo,et al.  Various chromatic-adaptation transformations tested using new colour appearance data in textiles , 1995 .

[27]  Bandita Mainali,et al.  Responses of community to the possible use of recycled water for washing machines: A case study in Sydney, Australia , 2011 .

[28]  H H Ngo,et al.  Multi-criteria analysis towards the new end use of recycled water for household laundry: a case study in Sydney. , 2012, The Science of the total environment.

[29]  K. Goodwin,et al.  A multi-beach study of Staphylococcus aureus, MRSA, and enterococci in seawater and beach sand. , 2012, Water research.

[30]  Thi Thu Nga Pham,et al.  Vision and perception of community on the use of recycled water for household laundry: a case study in Australia. , 2013, Science of the Total Environment.

[31]  Huu Hao Ngo,et al.  Resident's strategy survey on a new end use of recycled water in Australia , 2009 .

[32]  E Nolde.  Greywater recycling systems in Germany--results, experiences and guidelines. , 2005, Water science and technology : a journal of the International Association on Water Pollution Research.

[33]  A. Cencič,et al.  Antimicrobial disinfection effect of a laundering procedure for hospital textiles against various indicator bacteria and fungi using different substrates for simulating human excrements. , 2007, Diagnostic microbiology and infectious disease.

[34]  Rainer Stamminger,et al.  Electricity and water consumption for laundry washing by washing machine worldwide , 2010 .