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Sugar Industry is considered as one of the most polluting industries and the treatment of the usedwater discharged after the manufacturing process is a challenging task in terms of maintaining the treated effluent quality and the economic viability. The raw effluent has characteristics of high BOD, high COD, low pH, high TDS, high TSS and odour problems. Due to rapid expansion of sugar manufacturing plants, the importance of appropriate treatment of the raw effluent gathers high importance in view of the damage it can cause to the environment and ecology. This study is a step towards using technology to help in deciding the treatment schemes for a given set of input characteristics, optimizing the energy consumed by each of the biological processes, which are the major consumers of energy in a treatment process and sizing of the treatment units. Though, only activated sludge process has been considered for optimization in this study using NSGA-II algorithm and MATLAB R2021a, it can be extended to other technologies also. As the BOD, COD and TSS are very high, two stage treatment is required to reduce their values within the tolerance limit. Due to the success of UASB (Up-flow Anaerobic Sludge Blanket) reactor in the anaerobic process of sugar industry usedwater, and the wide application of Activated Sludge Process (ASP) for aerobic process, they have been considered for biological treatment in this study. The code has been successfully able to give the required effluent values, the pareto-optimal front for optimization and the sizes of all the units used in the treatment process.
Keywords: Sugar Industry, MATLAB R2021a, NSGA-II, Optimization, Usedwater treatment.
