Design and construction of an automatic urine diversion flush urinal and the wastewater recycling:

Abstract

A flush urinal disposes human urine by using water through a pipe line to the sewage. A number of urinals installed in offices, educational institutions and other public places have manual flushing system like push button, trigger etc. These urinals mix human urine and the flush water and convey them to the sewage system, limiting stream segregation management of wastewater. About 40 litres of water and 14 litres of urine drains to the sewage per day per urinal. The present invention relates to a specially designed automatic urine diversion flush urinal and the wastewater recycling. Its mechanism of operation utilizes a sensor to detect presence of a user to open a control valve which allows urine to flow to its storage and closes it at flushing when the user leaves. The system allows for the use of a specified quantity of water to prevent odour and scale build up in the system. It ensures separate collection of urine (nutrient resource for soil enrichment/ fertilizer industry) and wastewater which is recycled through a treatment process. it also ensures compulsory and un-intentional flushing of urinal which conserve water at the same time it is cheap, which can be fitted or retrofitted on new as well as existing urinal systems. The dilute yellow collected from the urinal system is treated to reuse it as flushing water effectively. An existing methodology is used to treat the yellow water focusing on three parameters, odour, colour and nutrients for the safety reuse of treated yellow water. The treatment process consists of Aeration, filtration (carbon filter and sand filter) and disinfection.