Question

The total annual load of total phosphorus for the same year was estimated to be 107,000...

The total annual load of total phosphorus for the same year was estimated to be 107,000 metric tons (as P).

a. Calculate the average concentration of total P (in mg/L).

b. Calculate the average daily flux of total P (kg/day)

Homework Answers

Answer #1

(a) The average concentrataion of P = mass of P loaded /Volume of river basin

= (107000 metric tons per year) / (19900 m3/s)

= (1.07 x 108 kg/year) / (19900 x1000 L/s)

=(1.07 x 108 kg/year) / ((19900 x1000 L/s)x24 x 3600 s/day x 365 day /year )

= 0.406 x 10-5 kg/L

= 0.406 x 10-2 g/L

= 0.406 x 101 mg/L

= 4.06 mg/L

Convert any one into single unit like in year or second. Here we converted denominator from seconds to year.

(B)

Here we know flux of Nitrogen in metrric tons per year , we need to convert this into kg/day.

Flux of N in kg/day == 107000 metric tons per year

= 107000 x 103 kg / year

1 year = 365 days

= 107000 x 103 kg / 365 days

= 293150.7 kg/day

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The average discharge of the entire Mississippi River basin in 2005 was 19,900 m3/sec (measured at...
The average discharge of the entire Mississippi River basin in 2005 was 19,900 m3/sec (measured at Saint Francisville, MS). The total annual nitrogen load for the same year was estimated to be 295,000 metric tons (as N). a. Calculate the average concentration of total N (in mg/L). b. Calculate the average daily flux of total N (kg/day)
A wastewater treatment plant discharges total phosphorus in its effluent throughout the year into a nearby...
A wastewater treatment plant discharges total phosphorus in its effluent throughout the year into a nearby river. The treatment plant produces flows of 6 MGD with a total phosphorus concentration of 4.0 mg/L. The receiving river has an upstream flow of 200 ft3/sec and a background concentration of total phosphorus of 0.3 mg/L. Determine the concentration (in mg/L) of total phosphorus in the river at a point downstream of the effluent location.
A pond contains a total nitrogen concentration of 25 mg/L as N, and a phosphorus concentration...
A pond contains a total nitrogen concentration of 25 mg/L as N, and a phosphorus concentration of 10 mg/L as P. Based on the following stoichiometric formula… Determine which is the limiting nutrient. Calculate the mass of algae that would be produced per liter of water if all of the limiting nutrient were assimilated into new algae cells. C106H263O110N16P
Based on the USGS Model, what is the anticipated annual contaminant load (US Tons/year) of suspended...
Based on the USGS Model, what is the anticipated annual contaminant load (US Tons/year) of suspended solids and total nitrogen from a 35% impervious, 880 ha site in Philadelphia which contains 120ha of industrial & commercial use.
Environmental Engineering biological processes, A wastewater with a COD concentration of 970 mg / L 8,000...
Environmental Engineering biological processes, A wastewater with a COD concentration of 970 mg / L 8,000 m3 / day flow, fully mixed back It will be treated in a cyclic activated sludge system.Treatment system mud age will be 5 days will be designed in a way. Kinetic and stoichiometric coefficients were determined as follows. Volumetric organic loading speed: 0,5 kg COD/m3.day uH : 3,7 day-1, bH: 0,04 day-1, KS: 45 mg COD/L, YH: 0,5 g VSS/g COD VSS/TSS: 0,8 mg...
1) True / False Dose and dosage express the same value 2) What units would you...
1) True / False Dose and dosage express the same value 2) What units would you use to express concentration? a. mg/mL b. % c. g/L d. all of the above 3) If a doctor asked you to calculate a dose, which of the following choices would be the potential units for your answer? a. mg/kg b. tablets c. % d. mg 4) A drug's weight could include which of the following units? a. mL b. % c. mg/kg d....
11.7 Please read the background information on theophylline prior to answering this questions on Page 253....
11.7 Please read the background information on theophylline prior to answering this questions on Page 253. A.M. is an 80?kg, 5 foot 11 inch, 50?year?old male who is to be treated with theophylline for an asthmatic attack. Theophylline’s clearance in A.M. is estimated to be 1.6 L/h based upon his demographic features: severe obstructive pulmonary disease, congestive heart failure and smoking a pack of cigarettes a day. The population average volume of distribution of theophylline is 0.5 L/kg. (a) Advise...
Wastewater treatment The Ampang Jaya Municipal Council with a population of 350,000 and several industries discharged...
Wastewater treatment The Ampang Jaya Municipal Council with a population of 350,000 and several industries discharged 11 MGD of raw sewage into an activated sludge system treatment plant. The average concentration of BOD5 is 240 mg/L and the suspended solids is 260 mg/L. If the average domestic per capita sewage flow is 225 L/c.day, what is the average flow of the industrial wastewater (in MGD)? marks) If the average BOD5 load from the domestic sewage is 55gcapita-1day-1, determine the average...
You are an analyst for an environmental protection agency. A company has applied for a permit...
You are an analyst for an environmental protection agency. A company has applied for a permit to discharge up to 1000 kg/year of baloneyum (By) into a river. Downstream from the discharge, the water is used for crop irrigation and for drinking water. Your agency specifies that the permit should be granted if the most exposed person would receive a By dose of 0.1 mg/day or less. The river has an average flow rate of 100,000 liters per second (l/s)....
Sun Bank has six-year zero coupon bonds with a total face value of $20 million. The...
Sun Bank has six-year zero coupon bonds with a total face value of $20 million. The current market yield on the bonds us 10%. A) what is the modified duration of these bonds? B) what is the price volatility if the max potential adverse move in yields is estimated at 20 basis points? C) what is the daily earnings at risk of this bond portfolio? d) what is the 10-day VAR assuming the daily returns are independently distributed?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT