The minimum dissolved oxygen which should be present in water in order to save aquatic life is: * О 15 ppm O 10 ppm О 5 ppm О 2 ppm
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Q: A desalination plant produces 10,000 m3/day of brine with concentration of 80 g (gram)/L. This brine…
A: Given A desalination plant produces 10,000 m3/day of brine with a concentration of 80 g (gram)/L So…
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Q: How much dissolved oxygen (mg/L) is present in 27°C freshwater?
A: Answer: In fresh water at the temperature of 27°C the dissolve oxygen present is approximately…
Q: Calculate the biological oxygen demand (BOD) in mg/L, given the following information Initial…
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Q: A key component of water is the amount of dissolved oxygen that is available the water, (a) which…
A: (Since you have asked multiple questions, we will solve the first question for you. If you want any…
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A: for long term removal of the carbon is known as carbon sequestration. the capturing of the carbon in…
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A: To find the DO concentration in lake after 7 days
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A: Theoretical oxygen demand is the calculated value of oxygen required by the substance for complete…
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Q: d) A city in Kenya consumes 50,000m of water each day. Chemical analysis reveal that the water has a…
A: Data is as given
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Q: Problem- A water contains 110 mg/L carbonate ion and 80 mg/L bicarbonate ion at a pH of 10.…
A: Given- Concentration of carbonate ions-CO32-=110 mg/LConcentration of bicarbonate ions-HCO3-=80…
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Q: Q/ If the 5-day 20°C BOD is 150 mg/l what world be it's 8-day 15°C BOD? Assume the deoxygenation…
A: Given: 5-day BOD at 20 oC = 150 mg/L Deoxygenation constant k at 20 oC = 0.23 /d The value of 8-day…
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A: Given Data:b=9md=0.90mQ=7.65 m3/sec
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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…
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A: solution given oxygen consumption by activated sludge = 60g O2/L.d 50% of this quantity = 0.5 x 60…
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A: Following is required answer :
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A: Given, Concentration of Iron chloride = 180 ppm
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: The ways of desalinating sea water are distillation, reverse osmosis, electro dialysis and ion…
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A: Answer We are given Alum dose = 58.5 mg/L Total alkalinity present = 130 mg/L We know that Alum…
Q: A water treatment plant with an average flow of Q = 0.5 m3/s treats its water with alum at a dose of…
A: Solution Total mass of alkalinity(HCO3-) is find in another step
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- How much dissolved oxygen (mg/L) is present in 27°C freshwater?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.The flow of a river is 1.5 m3/s, the river is polluted with the pesticide permethrin and flows into a lake (100 m x 100 m 2.5 m) 25000m3. Steady state concentration of permethrin leaving the lake is 1.4 ppm and the average cross-sectional area of the river is 2.7 m2. The half-life of permethrin in this environment is 19 hrs.
- Calculate the exact alkalinity (in mg/L as CaCO3) of a water containing 120.0 mg/L of bicarbonate ion and 15.00 mg/L of carbonate ion. The water has a pH of 9.4.The residence time of the water in Lake Erie is 2.70 years. If the input of phosphorus to the lake is cut by 67.3%, what is the concentration of phosphorus in the lake, in % of the original concentration, after 1.41 years?A 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/l
- A 440-MW coal-fired power plant is burning coal that contains 185 ppb of mercury. The coal firing rate is 300,000 Ib/hr, and the flue gas flow rate is 1.0 million scfmThe ways of desalinating sea water are distillation, reverse osmosis, electro dialysis and ion exchange. Explain which of the method is suitable for a community with high energy inefficiency.a) Dissolved oxygen (D0) is influenced by which factors? Explain. Subject : environmental engineering lab
- Water Resources Engineering For the following transition, draw E2, y2 on the specific energy chart. Fully describe your reasoning for your placement. E1, y1 is shown on the chart. For this transition, in a rectangular channel, there is a sudden increase in the depth of the channel bottom.A river, flowing at 1.5 m3/s, is polluted with the pesticide permethrin and flows into a lake (100 m x 100 m 2.5 m). The steady state concentration of permethrin leaving the lake is 1.4 ppm and the average cross-sectional area of the river is 2.7 m2. The half-life of permethrin in this environment is 19 hrs. What is the concentration of permethrin entering the lake? What distance downstream of the outlet would the concentration be less than 1 ppm?. A wastewater treatment plant treats industrial waste and discharges 5.0 x 10-6 M benzene (C6H6) at a flowrate of 8 m3 /s into a 1.0 x 109 m3 lake. The stream feeding the lake has a benzene concentration of 1.0 μg/L and a flowrate of 100 m3 /s. Benzene has a natural decay rate of 0.038day-1.a) What is the concentration of benzene in the downstream? What is the maximum contaminant limit (MCL) for benzene? Does the concentration you calculated meet the MCL set by the Safe Drinking Water Act?b) If the standard is exceeded, by how many μg/L of benzene in the wastewater effluent will the treatment plant need to reduce?