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A primary settler tank removes 50% of the total suspended solids entering a wastewater treatment plant. Considering that the concentration of suspended solids at the

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A primary settler tank removes 50% of the total suspended solids entering a wastewater treatment plant. Considering that the concentration of suspended solids at the entrance of the plant is 246 mg/l. Determine the dimensions of a square tank if the depth of the tank is 12 feet. Assume that solids in the tank degrade at a rate of 0.11/day. Assume the tank is completely mixed, receives no other loads, and has no leaks. Establish a mass balance by graphically defining the details considered in the settler.

Problema Nm. 1 (60%) Un tanque sedimentador primario remueve el 50% de los slidos suspendidos totales que entran a una planta de tratamiento de aguas usadas. Considerando que la concentracin de slidos suspendidos en la entrada de la planta es de 246 mg/l. Determine las dimensiones de un tanque cuadrado si la profundidad del tanque es de 12 pies. Asuma que en el tanque los slidos se degradan a razn de 0.11/da. Asuma que el tanque est completamente mezclado, no recibe otras cargas y no tiene prdidas. Establezca un balance de masa definiendo grficamente los detalles considerados en el sedimentador. Demuestre sus clculos con un balance de masa y un dibujo

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