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WATER QUALITY PARAMETER: A REVIEW ON DISSOLVE OXYGEN (DO) CONTROL METHOD

Ahmad Aftas Azman, Mohd Hezri Fazalul Rahiman, Norbaya Sidek, Ilyani Akmar Abu Bakar


Earth consists 71% of water which is an essential element for human survival, precisely on energy sources and daily consumptions A specification has been outlined by World Health Organization (WHO) to determine the water quality parameter (WQP) for each water usage. One of the parameter contained in waste water treatment plant (WWTP) is Dissolve Oxygen (DO). DO is the key parameter in WWTP which determine the suitability of the water usage. DO also helps the biochemistry reaction process wherein the content of DO reflects on the effluent quality and the energy consumption of the wastewater treatment plant. A review on DO control method is presented which highlighted the advantages and disadvantages each of the methods adopted. The objective of this paper is to determine the ideal control method for DO controller.