Biological Water Treatment Using Ultraviolet (UV) Light

The demand for wastewater treatment is rapidly increasing with the significant growth in the world population. There is a noticeable enhancement in the number of wastewater treatment plants and research is focused on technological development in different stages of the treatment process. The current project is aimed at implementing a key stage in the wastewater treatment process using ultraviolet (UV) light that will be environment-friendly and cost-effective. A water chamber containing ultraviolet (UV) light has been designed and built that is used to disinfect water from biological molecules in the tertiary stage of the wastewater treatment process. A synthetic housing made of stainless steel has been used as a chamber for UV light and Solid Works software was used for the initial design and subsequent numerical analysis. The required intensity of the UV light was determined from the numerical calculations. The volumetric flow rate of the treated water in the chamber was calculated using the data available in the literature. The sample water, after some stages, was collected from a local wastewater treatment company and used to perform the experiments. The treated water was sent back to the same company for quality check and estimated the analysis based on the results. The quality of the treated water was also checked using digital water flow meter available in the market and comparisons has been made that revealed a good agreement.