What is the final river temperature downstream

Reference no: EM13563857

A toothpaste factory situated on a large river disposes of a waste water containing villiamite (NaF) to the river on a continuous basis. The minimum flow in the river is 210 m3/s, and the discharge rate from the treatment plant is 12.5 m3/s. The river temperature averages 18°C and the waste discharge is 80°C.

a. If the maximum acceptable limit for the pollutant is 1.0 ppm in the downstream river, and the background concentration of the pollutant upstream is 0.4 ppm, what is the maximum concentration, in M, that can be safely released from the plant?

b. What is the final river temperature downstream? Assume that the density of the waste stream is 1000 kg/m3.

Reference no: EM13563857

Questions Cloud

Estimate the pressure in the pipeline 1 km downstream : Water leaves a treatment plant in a 450-mm diameter ductile-iron pipeline at a pressure of 600 kPa and at a flow rate of 0.5 m^3/s. a) If the elevation of the pipeline at the treatment plant is 125 m, estimate the pressure in the pipeline 1 km downst..

An expansion against zero external pressure : One mole of an ideal monoatomic gas initially at 300 K is expanded from an initial pressure of 10 atm to a final pressure of 1 atm. The molar heat capacity for constant volume for the gas is Cv = 3/2 R .

What is the elevation of point b : You must establish the elevation of point B from point A (elevation 216.612 m). A and B are on opposite sides of a 12 lane highway. Reciprocal leveling is used with the following results: Station BS HI FS Elevation BM 130 0.702 188.567

What is the maximum distance away that the navigation lights : An offshore drilling rig is being towed out to sea. What is the maximum distance away that the navigation lights can still be seen by an observer standing at the shoreline? The observer's eye height is 5'6" and the uppermost navigation light is 168 a..

What is the final river temperature downstream : A toothpaste factory situated on a large river disposes of a waste water containing villiamite (NaF) to the river on a continuous basis. The minimum flow in the river is 210 m3/s, and the discharge rate from the treatment plant is 12.5 m3/s.

Determine the grade of the road : The natural water of a sample taken from a soil deposit was found to be 11.5%. it has been calculated that the maximum density for the soil will be obtained when the water content reaches 21.5%. Compute how many grams of water must be added to each 1..

What total volume of this soil is required to obtain : A construction site requires 35,000 yds^3 of soil in a compacted state with a moist unit weight of 126 pcf at a water content of 14%. if the uncompacted soil currently has a unit weight of 96 pcf and water content of 14%

Determine the gravitational force acting between two spheres : Determine the gravitational force acting between two spheres that are touching each other. The mass of each sphere is 400 kg and the radius is 300mm.

Determine the evaporation rate for a reservoir if the wind : Determine the evaporation rate for a reservoir if the wind speed is 40 mph and the surface temperature is 15 degrees Celsius and the overlaying temperature is 25 degrees Celsius. and the relative humidity is 30 percent

User Account

All Pages