A manufacture in Ontario has been fined because it has been releasing 5 L/s effluents having a
Question:
A manufacture in Ontario has been fined because it has been releasing 5 L/s effluents having a zinc concentration of 0.1 mg/L into a river. Upstream of the factory, the stream water rate is 100 L/s with a zinc concentration of approximately zero. The factory has been forced to reduce the zinc concentration of the effluent to below 20 μg/L. The engineer that is an employee of the factory recommends that they divert parts of the stream into the site and dilute the effluent to bring its zinc concentration to the required level.
a) Calculate the present concentration of zinc several miles downstream of the plant where the zinc is diluted in stream completely.
b) Compute the amount of water needed to be diverted to the site to achieve the required zinc concentration of effluent.
c) Determine the concentration of zinc downstream of the plant where the zinc is diluted in stream completely if the engineer’s plan is put into operation.
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell