Question 1: Is the dissolved oxygen level in the pond adequate for the fishes to thrive? Discuss the impact of low DO levels of water to aquatic organisms. Question 2: In typical aquatic environment, when dissolved organic matter is high, dissolved oxygen level tends to be low. Explain why this inverse relationship occurs.
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Q: How much dissolved oxygen (mg/L) is present in 27°C freshwater?
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Q: Dissolved oxygen (D0) is influenced by which factors? Explain
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Q: A desalination plant produces 10,000 m3/day of brine with concentration of 80 g (gram)/L. This brine…
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Q: Bacteria can be divided according to the dissolved oxygen utilization pattern. Differentiate and…
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- A desalination plant produces 10,000 m3/day of brine with concentration of 80 g (gram)/L. This brine will be thrown into the ocean. But the concentration has to be lowered to 60 dS/m. How much seawater should be mixed with the brine if the seawater has a salinity of 3%.? Calculate how much salt is in the brine in Tons/day.How much dissolved oxygen (mg/L) is present in 27°C freshwater?if temperature of a water sample is 20C and salinity is 30 ppt, what is the max concentration of dissolved oxygen?
- Often environmental contaminants, like estrogenic compounds, do not readily degrade when they are adsorbed to soil particles (adsorption can make these compounds unavailable to microbial organisms largely responsible for their decomposition). If a 1850 kg mass of soil contained 0.25 m3 of water with a dissolved compound concentration of 15 mg/L, how much mass of this compound would remain after 30 days? The compound has a half life of 22 days at a temperature similar to that in your study situation. You may make the following assumptions: the compound follows the Freundlich adsorption model with K = 0.25 L/kg and n = 1.2 any compound adsorbed to soil particles is resistant to degradation adsorption is at equilibrium at the beginning of the 30 day period the compound does not easily desorbA bottle is filled with river water. The initial dissolved oxygen concentration is 10.2 mg/L. After 5 days the dissolved oxygen concentration is 3.0 mg/L. Calculate the BOD 5. in mg/lEnvironmental science Give me right answer with short explanation. Which of the following is NOT true regarding the reaeration of dissolved oxygen (DO) in river: reaeration can be assumed to be first-order with regard to DO deficiency reaeration constant increases as river velocity increases reaeration constant increases as river water depth increase reaeration constant has a unit of time-1
- A sample of water at pH 10.5 has 36 mg/L of CO3-2 and 26 mg/L of HCO3-Including the contribution of [H+] and [OH-], find the alkalinity as CaCO3.a) Dissolved oxygen (D0) is influenced by which factors? Explain. Subject : environmental engineering labIf the chlorine demand for a water is 3.0 mg/L, and the breakpoint is at 3.0 mg/L, what would the amount of chlorine that would need to be added in (in mg/L) if you desired to have a free chlorine residual of 2.0 mg/L in the water?
- Dissolved chloride in a concentration of 500 mg/L is being advected with flowing groundwater at a seepage velocity of 0.3 m/d in an aquifer with a porosity of 0.25. Groundwater from the aquifer discharges into a river. a. What is the mass flux of chloride into the river (in g/(m2d))? b. How long does it take the chloride to travel 100 m through the aquifer (i.e., the travel time for a 100 m distance)?Calculate the pH and alkalinity (in mol/L) of a water that contains 120.0 mg/L of bicarbonate ion and 15.00 mg/L of carbonate ion.Consider a sample of water contaminated with organic pollution represented by an equivalent sugar concentration of 52 mg/L. Estimate the Theoretical Oxygen Demand