Question
In: Civil Engineering
3. Evaluate the annual lime requirements (kg/y) and residuals production (kg/y) of a drinking water treatment...
3. Evaluate the annual lime requirements (kg/y) and residuals
production (kg/y) of a drinking water treatment plant that softens
and treats Mississippi River water for distribution. The plant
capacity is 8 ML/d. Mississippi River water quality follows:
pH = 7.6
Ca2+ = 86 mg/L
Mg2+ = 26 mg/L
HCO3- = 225 mg/L
Solutions
Ally Wells answered 11 months agoRelated Solutions
Potassium permanganate (KMnO4) is sometimes added to water as it enters a drinking water treatment plant...
Potassium permanganate (KMnO4) is sometimes added to water as it
enters a drinking water treatment plant to assist in the removal of
Fe2+ and Mn2+ ions. The KMnO4 oxidizes those cations by acquiring
electrons according to the following reaction: KMnO4 + 4H+ + 3e ↔
K+ + MnO2(s) + 2H2O a) What is the (electron) equivalent weight of
Mn, based on this reaction? b) Calculate the mass (g) of KMnO4 in 2
L of a 0.15 M KMnO4 solution. c)...
Potassium permanganate (KMnO4) is sometimes added to water as it enters a drinking water treatment plant...
Potassium permanganate (KMnO4) is sometimes added to water as it
enters a drinking water treatment plant to assist in the removal of
Fe2+ and Mn2+ ions. The KMnO4 oxidizes those cations by acquiring
electrons according to the following reaction: KMnO4 + 4H+ + 3e ↔
K+ + MnO2(s) + 2H2O a) What is the (electron) equivalent weight of
Mn, based on this reaction? b) Calculate the mass (g) of KMnO4 in 2
L of a 0.15 M KMnO4 solution. c)...
Potassium permanganate (KMnO4) is sometimes added to water as it enters a drinking water treatment plant...
Potassium permanganate (KMnO4) is sometimes added to water as it
enters a drinking water treatment plant to assist in the removal of
Fe2+ and Mn2+ ions. The KMnO4 oxidizes those cations by acquiring
electrons according to the following reaction: KMnO4 + 4H+ + 3e ↔
K+ + MnO2(s) + 2H2O a) What is the (electron) equivalent weight of
Mn, based on this reaction? b) Calculate the mass (g) of KMnO4 in 2
L of a 0.15 M KMnO4 solution. c)...
1.The Springfield Water Treatment plant is constantly measuring the quality of their drinking water. The level...
1.The Springfield Water Treatment plant is constantly measuring
the quality of their drinking water. The level of pH is one item
that is measured by them, and the water treatment plant has a
target pH of 8.2. In a recent test of 14 samples of water
from the treatment plant, they found the following pH levels in
their water: 8.6, 8.5, 9.1,
8.4, 8.1, 9.3, 8.8,
8.9, 9.3, 8.0, 8.7,
8.6, 8.7, 9.1 . Also assume that the pH
level...
Ferric chloride is used as a coagulant for drinking water treatment. It reacts with bicarbonate to...
Ferric chloride is used as a coagulant for drinking water
treatment. It reacts with bicarbonate to form iron hydroxide
precipitate as follows: FeCl3•7H2O + HCO3- ↔ Fe(OH)3(s) + CO2 + Cl-
+ H2O
(a) Balance the above reaction. Rewrite the complete balanced
reaction.
(b) If 20 mg/L of ferric chloride are added to treat stream
water, calculate the amount (mg/L) of ferric hydroxide sludge that
will be formed.
Most water-treatment facilities monitor the quality of their drinking water on an hourly basis. One variable...
Most water-treatment facilities monitor the quality of their
drinking water on an hourly basis. One
variable monitored is pH, which measures the degree of alkalinity
or acidity in the water.
A pH below 7.0 is acidic, one above 7.0 is alkaline, and a pH of
7.0 is neutral.
One water-treatment plant has a target pH of 8.5(Most try to
maintain a slightly alkaline level.) The mean
and standard deviation of 1 hour’s test results, based on 17 water
samples at...
Discuss in detail how coagulation and flocculation are performed at a drinking water treatment plant. Describe...
Discuss in detail how coagulation and flocculation are performed
at a drinking water treatment plant. Describe how the optimum
coagulant dose can be determined to treat fresh surface waters for
drinking water supply. For removal of flocs from drinking water,
when should settling basins be used and when should dissolved air
flotation be applied? Why are GAC and PAC used in treating drinking
water
Sedimentation basins are employed both in filter plants for drinking water treatment and in municipal wastewater...
Sedimentation basins are employed both in filter plants for
drinking water treatment and in municipal wastewater treatment
plants. Briefly explain what solids are removed in each of these
sedimentation basins.
3. An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the...
3. An experiment was conducted to evaluate the effectiveness of
a treatment for tapeworm in the stomachs of sheep. A random sample
of 24 worm-infected lambs of approximately the same age and health
was randomly divided into two groups. Twelve of the lambs were
injected with the drug and the remaining twelve were left
untreated. After 6 months, the lambs were slaughtered and the
following worm counts were recorded. Assume the counts are
approximately normally distributed.
Drug-treatedsheep 18, 43, 28,...
About water purification: A. Name 3 water treatment trains and explain them.
About water purification:
A. Name 3 water treatment trains and explain them.
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