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Student Designer
University Product Description and Principal Function(s) The Grey Water Toilet System, designed specifically for apartment buildings, helps conserve water by using shower water for flushing. The water is collected from the shower drain and pumped into an in-wall tank. To avoid bacteria growth, the tank is discharged on a cyclic basis so that water isn’t stored for over twenty four hours. As an added safety precaution, the water is treated minimally via low powered ultrasonic irradiation.Adhering to health regulations, the toilet has been designed to eliminate user contact with the water during use. Antibacterial surface coatings and a non porus nano-glaze aid cleaning and flushing. Why does the product represent design excellence and why do you believe it deserves an Australian Design Award? Water conservation is a major issue in Australia and one area where a tremendous volume of fresh drinking quality water is wasted is the toilet. The grey water toilet system minimises water wastage by allowing shower water to be utilised for flushing. The water is collected from the shower drain and pumped into an in-wall tank.To minimise the size and energy consumption of the system, the water undergoes minimal treatment. To avoid bacteria growth, the tank is discharged if the water it contains has been stored for over twenty four hours. As an added safety precaution, the water is treated minimally via low powered ultrasonic irradiation. The system has been designed so that the volume of the tank is optimised and should not run out. In the event that the water does run out, there is a back up mains supply. In this situation the tank is only filled with one flush full of water and the system operates like a regular toilet until more shower water is available. Due to the minimal treatment of the water, to adhere to health regulations, the toilet has been designed to eliminate user contact with the water during use. There is no water permanently in the bowl and during flushing the lid automatically locks. Antibacterial surface coatings and a non porus nano-glaze aid cleaning and flushing. To ensure bacteria contaminated air and spray doesn’t enter the room, an exhaust fan extracts air during flushing. The system has been specifically designed to fit within the wall cavity of an apartment building. There are currently no real solutions for apartments regarding grey water systems, all cater to the household market. Efficiency of the system and space minimisation have been key considerations during the design process. The toilet itself is manufactured in the traditional way- slip cast vitreous china but has the added functionality of the high tech surface coatings. The in wall tank is rotationally moulded from polyethylene and all pipe work and fittings are standard. This system will save hundreds of litres of fresh drinking water per person per week. There is no need to waste such a precious resource on an application like toilet flushing. |
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