The surface water of a lake is at pH = 7.9 and contains 10^-2.9 M dissolved inorganic carbon (i.e., TOTCO3). If the water equilibrates with the atmosphere, what will the final alkalinity, pH, and dissolved inorganic carbon concentration be?

Q: ug/L of NaOH should be added in water to change the pH from 7 to 9 at 25°C.

A:

Q: the chlorine demand for a water is 3.0 mg/L, and the breakpoint is at 3.0 mg/L, what would the…

A:

Q: A river is traveling at a velocity of 0.06 m/s. At x = 0 km, the river has a dissolved oxygen…

A: Introduction : Biochemical oxygen demand (BOD) : BOD is a measurement of the quantity of oxygen…

Q: A river, flowing at 1.5 m3/s, is polluted with the pesticide permethrin and flows into a lake (100 m…

A: Given, Q = 1.5 m3/s or 5400 m3/hr V = 100m x 100 m x 2.5m = 250000 m3  A = 2.7 m2  t1/2 = 19 hrs

Q: A paper mill discharges its waste (KL= 0.05/day) to a river flowing with a velocity of 20 km/day.…

A: Given: Velocity = 20 km/day (BOD)ult = 50mg/L (BOD)s = (BOD)ult (1-10-k*t)             = 50 *…

Q: Calculate the equilibrium concentrations of all relevant C species if an action releases methane…

A: We have to determine the value of equilibrium concentrations of all relavent C species if an action…

Q: Which of the following add DO to water body? Photosynthesis Respiration by aquatic organism…

A: This question is related to the Environment and waster water Engineering.

Q: A 0.5 ppm concentration of copper sulfate is to be applied to a lake to control the growth of algae.…

A: The copper sulfate of both forms granulated and pulverized is used to control the algae. This…

Q: The theoretical yield coefficient can be estimated from the observed yield coefficient if the…

A: Cell mass and item arrangement by microorganisms can be portrayed quantitatively by yield…

Q: 2. The raw water to be coagulated has a pH of 7.5, determine how much alkalinity the water must have…

A: pH of coagulated water = 7.5 After adding 150mg/L of alum, we have to determine the change in…

Q: Determine the concentration of hydrogen ion and the hydroxide ion (in mg/L) of a solution that has a…

A: Data: Given :pH = 9.1 To find:H+ = ?OH- =?

Q: A river, flowing at 1.5 m3/s, is polluted with the pesticide permethrin and flows into a lake (100 m…

A: Answer  (a) Calculation of Concentration of permethrin entering the lake In order to determine the…

Q: Poorly treated municipal wastewater is continuously discharged directly into a lake. The discharge…

A: The pollutant balance equation for the steady-state is: In-out-Decomposed=0  Also Accumulation=0

Q: Often environmental contaminants, like estrogenic compounds, do not readily degrade when they are…

A: First order kinetic is followed by Degradation of estrogenic compounds which are present in nature.…

Q: A bottle is filled with river water.  The initial dissolved oxygen concentration is 10.2 mg/L.…

A: Given: The initial dissolved oxygen concentration = 10.2 mg/L.  After 5 days ,the dissolved oxygen…

Q: Calculate the alkalinity of a water

A:

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.