Reduce the concentration in the lake below

Reference no: EM13562610

A lake is stricken due to phosphorus excess leading to eutrophication and low dissolved oxygen. The target P concentration in the lake is <0.025 mg/l

The currect P inputs are as follows:

Creek A: Q=315 L/s, P=0.045 mg/l

Creek B Q=20L/s, P=0.048 mg/l

Creek C Q=28L/s, P=0.053 mg/l

Other non point sources: P in =221 kg/yr

Loading from an internal lake sediments P in =2158 kg/yr

Settling rate within the lake P out = 2030 kg/yr

A) calculate the steady state P concentration in the lake

B)Creek A has been identified as the easiest to control. What would the P concentration have to be reduced to in Creek A, in order to reduce the concentration in the lake below 0.025 mg/l?

Reference no: EM13562610

Questions Cloud

Calculate the intensity of the megnetic field : An induced emf of 12V is produced when a 350 loop coil, ofradius 4.2cm is placed perpendicular to a magnetic field and turn90deg in 0.08s. calculate the intensity of the megnetic field

Find the time the waves need to cross the tank : At one end of a ripple tank 90 cm across, a 6 Hz vibratorproduces waves whose wavelength is 50 mm. Find the time the waves need to cross the tank

Calculate the buoyant force on the chamber : An undersearesearch chamber is spherical with an external diameter of 6.00 m. calculate the buoyant force on the chamber

Calculate the required flow-rate : The owner of a dive shop wants to purchase a constant displacement air compressor capable of simultaneously filling 10 SCUBA tanks. each having a volume of 0.4 ft^3. in 20 minutes. The initial pressure is 500 psig and the final pressure is 3000 psig...

Reduce the concentration in the lake below : Creek A has been identified as the easiest to control. What would the P concentration have to be reduced to in Creek A, in order to reduce the concentration in the lake below 0.025 mg/l?

What is the age of the basket : An archeologist on a dig finds a fragment of an ancient basketwoven from grass. What is the age of the basket

Calculate the volume of pfr to achieve disinfection : A drinking water system treats a flow of 3000 gallons per minute. Consider disinfection of a bacteria by ozone with an inactivation constant of K=0.06/min. To reduce the number of bacteria from 400 bact/ml to 4 bact/ml.

Determine appropriate dimensions of the finished water : Cylinders C and D are attached to the end of the cable. if D has a mass of 600 kg, determine the required mass of C, the maximum sag h of the cable, and the length of the cable between the pulleys A and B. The Beam has a mass per unit length of 50 kg..

Find scale factors the vector ds the volume : In this problem find ds^2,scale factors,the vector ds,the volume(Or area) element,the a vectors ,and the e vectors for parabolic cylinder coordinates u,v,z

User Account

All Pages