selected your process and specific material. Costing should evidence that raw materials and production costs have been considered in ensuring a realistic unit cost has been established./n through the center of the village, and the only way to each side is through a narrow suspension bridge. Our team project aim: As a group we agreed that among all the serious issues, water is the most significant as it is a vital part of life. Therefore, we set an individual brief for ourselves where we deeply researched the issues that Pu Ngaol are experiencing, and the report will tackle the root issues and provide a solution. Main issues with water: Why did we choose to treat water: Residents of Pu Ngaol use the Ou Te River for multiple purposes such as bathing, cleaning their clothes, and drinking but only after boiling the water, although boiling will kill the germs it will not disinfect the water. Other sources include bottled water, processing plants but across a small scale; boreholes are equipped with hand pumps however they are rarely used as they contain mud and hard water therefore, they are used for agriculture uses instead; rainwater is also used where it is collected in tanks but again before drinking it is boiled. Climate affects water availability as well for example when the rain season starts the river flow is higher causing the water to become unclean. We can hence establish that the residents of Pu Ngaol are facing a crisis to obtain clean water, and the process of obtaining their water relies on many unstable factors effecting the quality, leading us to choose to find a way to set a stable way to obtain water that doesn't rely on other factors and that is available all year around. Reverse osmosis Reverse Osmosis Design: How the design will work: The feed pump transports water from the river to the tank. Subsequently, another feed pump transfers the water from the tank to the sediment filter, where particles are separated from the water. This filtration process occurs with the water entering the filter from the bottom, causing it to move in an upward direction. The water then moves from the sediment filter to the Carbon filter to eliminate any coloration. Following this, the water proceeds from the Carbon filter to the Softener filter, which removes minerals such as Magnesium and Calcium that contribute to water hardness. Finally, the water passes through the PPC Filter, which is responsible for purifying the water. The water flows to the pressure switch if it reaches a specific level. From there, it can proceed to the Membrane. The switch then sends a signal to the control panel. The reverse osmosis (RO) pump transports water to the membrane under high pressure. The mineral water is sourced from the lower region and stored in a tank, while the wastewater is discharged from the upper part of the membrane and exits through the drainage system. The mineral water is sent to the storage tank. and then distributed through the water network to supply households with water. Within the storage tank, there is a buoy that functions as a valve. When the water level in the tank reaches its maximum capacity, the buoy will close the pipe and send a signal to prevent any further water from entering. As the water level decreases, the buoy will descend, allowing the pump to resume its operation. The Function of each and what does provide to help purify the water:
Fig: 1