NUR ALANI FATINI BINTI HUSNUL AMIR SEKOLAH KEBANGSAAN BERTAM PERDANA
The effects of climate change are catastrophic for the sustainability of the Earth, especially for water supply (quantity and quality) over short and long-term periods. Over the years, water stress and scarcity have emerged, threatening life worldwide and affecting society and economic activity. Therefore, alternatives from abundant sources such as rainwater and water recycling from grey water have been identified to solve this problem in areas with high demand (dense population) and a low supply of clean water. The Sustainable Recycled Water Filtration System (SRWaFilS) was developed to be cost-effective, self-customizable, energy efficient, and highly reliable (safe water usage) for mobile use in residential, institutional, and commercial buildings. The cost-effective dispenser hybrid water filtration model consists of an upper collector, a pre-filtration main filtration, filtered water, and a collection tank. The materials used as filter media do not contain any harmful elements and have no effect on the filtered water. Physico-chemical properties such as temperature, pH, odour, total dissolved solids (TDS), chemical oxygen demand (COD), and conductivity (EC) were tested for the six types of water samples. The results show that the pH value of the rainwater and grey water (ablution) is between 0.0 and 8.28. The rainwater is slightly alkaline, while the grey water is neutral. The purification performance (COD) was between 43% and 54%. The filtered water fulfils the requirements of the National Water Quality Standard (NWQS) for Malaysia. The use of recycled materials solves the problem of the many other natural wastes, such as cotton, wool, and glass bottles (non-biodegradable), generated in households. The reliance on natural resources (e.g., clay) in filtration systems can slowly be replaced by alternative materials (with similar functionality and effectiveness), such as activated carbon. The current innovation supports the UN SDGs (6, 9, 11 and 13).