Oxygen is used to provide energy for the cell growth and produce CO 2 and H 2O as the final by products. This mixture of raw waste water and the returned activated sludge is called as the mixed bacteria.Ĭ) The organisms live by using oxygen and work by adsorbing and absorbing the food matter. Principles of OperationĪ) This is the actual process of bio-degradation where the coagulated organic matter is acted upon by the micro-organisms and converted to harmlessed products and new cell tissue/cell matter.ī) A portion of these settled active organisms that flow out of the aeration/reaction tank with the treated water is returned to the tank to mix with the incoming waste water and provide continuous reseeding. BOD and COD of the effluent is reduced maximum to the extent of 80 % and 65 % respectively. ![]() Formation of excess sludge generated from a surplus of living and inert matter in the wastewater.ģ. Micro organisms consuming oxygen to satisfy their energy demand.Ģ. Under the activated sludge treatment process, the biodegradable organic matter is consumed by a mass of micro-organisms under aerobic conditions, resulting in:ġ. In this process Activated Sludge is developed when these micro-organisms are allowed to coagulate with the organic matter in the waste water to form “Flocs’. The activated sludge process consists of converting the suspended and particulate organic matter in the raw waste water into harmless end products and new cells growth with the help of Anaerobic and Aerobic Microorganisms. ![]() The activated sludge process is one of the biological method of industrial waste waste treatment. In this session discussed about A ctivated Sludge Process meaning, Principles of operation, Process description, important parameters and features for industrial wastewater treatment.Īerobic Process in Wastewater Treatment| Activated Sludge Treatment Meaning Activated Sludge Process
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