It is a biological treatment process, which is able to produce high quality effluent at a reasonable operating and maintenance costs. Extended aeration is typically used in prefabricated "package plants" intended to minimize design costs for waste disposal from small communities, tourist facilities, or schools. entrained air Extended Aeration (EA) is one of the modifications of the activated sludge process in which aeration time is increased to about 24 hours. Conventional activated sludge. Used in smaller systems, like package plants Disadvantages 1. EXTENDED AERATION ACTIVATED SLUDGE PROCESS 2.1 General Modification of the activated sludge process which has gained popularity in recen: years is the extended aeration process. Larger volume, high aeration costs 2. Extended aeration is typically used in prefabricated "package plants" intended to minimize design costs for waste disposal from small communities, tourist facilities, or schools.
high rate, conventional, extended aeration) the plant theoretically operates at one given point on the curve. The curve shows that for a particular modification of the activated sludge process (i.e. The activated sludge process is the most widely used method of biological wastewater treatment around the world. The Activated Sludge Process • In1914, British researchers Edward Ardern and W.T. In the extended aeration activated sludge system, low organic loadings, high biological solids concen trations, and extended periods of aera tion are normally used. Typical applications of this process are to be found in the Pasveer and Carrousel type oxidation ditches widely used in Europe and elsewhere, in the "package' The major advantage of this configuration is that the rate at which waste activated sludge is removed from the process approaches zero. An extended aeration process is sometimes referred to as a "total oxidation process," which means all the primary treated or influent BOD is converted to CO 2. Nutrient Dosing The Biolac ® system is an innovative activated sludge process using extended retention of biological solids to create an extremely stable, easily operated system. The diagram at the left shows a typical flow pattern for a conventional activated sludge aeration tank and secondary clarifier. EXTENDED AERATION ACTIVATED SLUDGE PROCESS 2.1 General Modification of the activated sludge process which has gained popularity in recen: years is the extended aeration process. The Biolac® system is an innovative activated sludge process using extended retention of biological solids to create an extremely stable, easily operated system. The IDEA Intermittent Decanted Extended Aeration Activated Sludge System is a span’s approved system and has been widely adopted in Thailand. The average occupancy has been estimated to be 2.9 persons per residence. Activated sludge (AS) is a process dealing with the treatment of sewage and industrial wastewaters and developed around 1912-1914.