Wastewater flow in a sewer can be estimated by adding a known amount of tracer s

Question

Wastewater flow in a sewer can be estimated by adding a known amount of tracer such as salt solution and measuring the salt concentration upstream and downstream of the point of addition. Upstream the background concentration of salt was 50 mg/liter. One hundred kilograms of a salt solution (containing 30% salt) per minute was added, and the resulting concentration of salt downstream was determined to be 0.1% salt by weight. Estimate the mass and volumetric flow rate of the wastewater in the sewer.

Explanation / Answer

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CEEQFjAC&url=http%3A%2F%2Fwww.ecs.umass.edu%2Fcee%2Freckhow%2Fcourses%2F371%2F371hw09%2F371hw09s.pdf&ei=IcH0UKjzFc7LrQfmx4EQ&usg=AFQjCNEV_FltObQjpsQcUOhneb088ZPDfw&sig2=PdROvx3jnQWYX99olpzzJA&bvm=bv.1357700187,d.bmk

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