AERATION METHOD FOR WASTEWATER TREATMENT

Abstract

Water is vital for sustaining all forms of life on earth. Treatment of domestic wastewater before its disposal into the environment was not given much importance until the recent past. This was due to increased contamination rates of surface and ground water sources. Domestic wastewater treatment is becoming even more critical due to diminishing water resources and resulting water scarcity especially during summer in many parts of the country. Aeration is one of the methods which help in the removal of various contaminants present in domestic wastewater. During the past decade, pond aeration systems have been developed which will sustain large quantities of fish and invertebrate biomass. Dissolved Oxygen (DO) is considered to be among the most important water quality parameters in fish culture. Fishponds in aquaculture farms are usually located in remote areas where grid lines are at far distance. Aeration of ponds is required to prevent mortality and to intensify production, especially when feeding is practical, and in warm regions. To increase pond production it is necessary to control dissolved oxygen. Artificial intelligence (AI) techniques are becoming useful as alternate approaches to conventional techniques or as components of integrated systems. They have been used to solve complicated practical problems in various areas and are becoming more and more popular nowadays. This project presents a new design of diffused aeration system using fuel cell as a power source. Also fuzzy logic control Technique (FLC) is used for controlling the speed of air flow rate from the blower to air piping connected to the pond by adjusting blower speed. matlab simulink results show high performance of fuzzy logic control (FLC).