I do not know how to solve this problem. A manufacture in Ontario has been fined...

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Chemistry

I do not know how to solve this problem.

A manufacture in Ontario has been fined because it has beenreleasing 5 L/s effluent having
zinc concentration of 0.1 mg/L into a river. Upstream of thefactory, the stream water rate is
100 L/s with zinc concentration of approximately zero. The factoryhas been forced to
reduce the zinc concentration of the effluent to below 20 Î¼g/L. Theengineer that is an
employee of the factory recommends that they divert parts of thestream into the site and
dilute the effluent to bring its zinc concentration to the requiredlevel.
a) Calculate the present concentration of zinc several milesdownstream of the plant
where the zinc is diluted in stream completely.
b) Compute the amount of water needed to be diverted to the site toachieve the required
zinc concentration of effluent.
c) Determine the concentration of zinc downstream of the plantwhere the zinc is diluted
in stream completely if the engineerâ€™s plan is put intooperation.

Answer & Explanation Solved by verified expert

4.0 Ratings (573 Votes)

a When Zinc is diluted with in stream Zinc entering from the plant 501 mgL 05 mgS The upstream water is at 100 Ls and hence total flow rate of mixed stream is 1005105 Ls The See Answer

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