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COAGULATION - Treatment of a water supply required 60 mg/l of alum as a coagulant. The...
A new water treatment facility will be built to supply water to the town of Freemont. The town's ...
A new water treatment facility will be built to supply water to the town of Freemont. The town's population is currently 14,000 and the per capita water use is 100 gal per day. The new facility will be designed to account for increases in both per capita water use and population growth, and projections for water use will be determined for fifty years in the future. The population of the town of Freemont grows at an average rate of 2%...
A new water treatment facility will be built to supply water to the town of Freemont. The town’s ...
A new water treatment facility will be built to supply water to the town of Freemont. The town’s population is currently 14,000 and the per capita water use is 100 gal per day. The new facility will be designed to account for increases in both per capita water use and population growth, and projections for water use will be determined for fifty years in the future. The population of the town of Freemont grows at an average rate of 2%...
Example 8: A 10 MGD (million gallons per day) surface water treatment plant proposes to use...
Example 8: A 10 MGD (million gallons per day) surface water treatment plant proposes to use alum coagulation for turbidity reduction using 45 mg/L alum! dosage. The raw water has an alkalinity of 20 mg/L as CaCo,. Commercial alum has the formula Al(SO2)2.144,0 (MW = 594). Determine the daily alum dosage required in kg/d. Z.6 -> EW - 99
A water treatment plant with an average flow of Q-1,0 m3/s treats its water with alum at a dose of 30 mg/L. A...
A water treatment plant with an average flow of Q-1,0 m3/s treats its water with alum at a dose of 30 mg/L. Alum coagulation is used to remove particulate matter, reduce the concentration of organic matter, and reduce the alkalinity of the water according to Equation 10-1. If the organic matter concentration is reduced from 10 mg/L to 2 mg/L. determine the total mass of Al(OH)3 removed per day O 708 kad 652 kg/d 674 O 720 kg • If...
You are assigned to operate a drinking water treatment plant which has a capacity of 280...
You are assigned to operate a drinking water treatment plant which has a capacity of 280 ML per day. The source water is from a river that contains a high concentration of dissolved organic carbon (DOC), (13 mg L-1) and has a high colour (60 HU) but where the alkalinity changes seasonally. In summer to winter the alkalinity is high (> 100 mg L-1 as CaCO3) and in spring after snow has melted in the mountains and the water flows...
Determine the alkalinity in mg/L CaCOs for DI water and tap water based on the number of digits (...
To pH of 8.3
To pH of 4.5
0
320
Alkalinity.
Wastewater Problem.
Determine the alkalinity in mg/L CaCOs for DI water and tap water based on the number of digits (digits= mg/L CaCO3 in 100 ml) Assuming that 25mg/L of filter alum [Al2(SO4)3-14.3 H2O] with MW-600 was used for coagulation, determine the total amount of alkalinity consumed in mg/L CaCOs from coagulation and flocculation. Is the amount of alkalinity consumed from coagulation less than, equal to, or greater than...
2. A dose of 41 mg/L of alum is used in coagulating a turbid water at...
2. A dose of 41 mg/L of alum is used in coagulating a turbid water at a water treatment plant treating a flow rate of 32 million gallons per day (mgd). The natural alkalinity of the source water is 10 mg/L (as CaCO3). a. Will the alkalinity be completely consumed in the reaction? If not, then how much alkalinity will be left? If so, then what concentration of caustic soda (NaOH) must be added to avoid a change in the...
solve 3-2 based on answers 3-1 correct answers should be: 3-1 a. 20 mg/L b. 50...
solve 3-2 based on answers 3-1
correct answers should be:
3-1 a. 20 mg/L b. 50 mg/L
3-2 a. sodium carbonate 645 tons/yr, $161,000 per yer
3-2 b. lime 341 tons/yr $17000
3-1 Calculate the decrease in alkalinity when using the following coagulant doses: a) alum = 40 mg/L and, b) ferric chloride = 50 mg/L 3-2 If the above ferric chloride addition is for phosphorous reduction at a wastewater plant with a flow rate of 8 MGD. Look up...
The following water quality data are available for a community Water quality Ca2+ = 60 mg/l...
The following water quality data are available for a community Water quality Ca2+ = 60 mg/l (as species) Mg2+ = 40 mg/l (as species) HCO3- = 220 mg/l as CaCO3 CO2 = 7 mg/l (as species) pH = 7.6 Final desired hardness = 80 mg/l as CaCO3. The flow rate of the treatment plant is 0.24 m3/s. a. Calculate the total, carbonate, and non-carbonate hardness b. Calculate the amount of lime (as mg/l of CaO) needed to soften the water...
[3 pts] A water treatment plant consists of coagulation, flocculation, sedimentation, filtration and disinfection. The suspended...
[3 pts] A water treatment plant consists of coagulation, flocculation, sedimentation, filtration and disinfection. The suspended solids concentration in the raw water coming into the plant is 500 mg/L and the plant treats 8 MGD. Alum (Al2(S04)3 14H20) is used as a coagulant with a dose of 50 mg/L. Compute the total solid sludge produced daily if a complete reaction of alum to aluminum hydroxide (Al(OH)3] occurs and 98% total solids are removed by the sedimentation and filtration steps. The...
A new water treatment facility will be built to supply water to the town of Freemont. The town's population is currently 14,000 and the per capita water use is 100 gal per day. The new facility will be designed to account for increases in both per capita water use and population growth, and projections for water use will be determined for fifty years in the future. The population of the town of Freemont grows at an average rate of 2%...
Example 8: A 10 MGD (million gallons per day) surface water treatment plant proposes to use alum coagulation for turbidity reduction using 45 mg/L alum! dosage. The raw water has an alkalinity of 20 mg/L as CaCo,. Commercial alum has the formula Al(SO2)2.144,0 (MW = 594). Determine the daily alum dosage required in kg/d. Z.6 -> EW - 99
A water treatment plant with an average flow of Q-1,0 m3/s treats its water with alum at a dose of 30 mg/L. Alum coagulation is used to remove particulate matter, reduce the concentration of organic matter, and reduce the alkalinity of the water according to Equation 10-1. If the organic matter concentration is reduced from 10 mg/L to 2 mg/L. determine the total mass of Al(OH)3 removed per day O 708 kad 652 kg/d 674 O 720 kg • If...
To pH of 8.3
To pH of 4.5
0
320
Alkalinity.
Wastewater Problem.
Determine the alkalinity in mg/L CaCOs for DI water and tap water based on the number of digits (digits= mg/L CaCO3 in 100 ml) Assuming that 25mg/L of filter alum [Al2(SO4)3-14.3 H2O] with MW-600 was used for coagulation, determine the total amount of alkalinity consumed in mg/L CaCOs from coagulation and flocculation. Is the amount of alkalinity consumed from coagulation less than, equal to, or greater than...
2. A dose of 41 mg/L of alum is used in coagulating a turbid water at a water treatment plant treating a flow rate of 32 million gallons per day (mgd). The natural alkalinity of the source water is 10 mg/L (as CaCO3). a. Will the alkalinity be completely consumed in the reaction? If not, then how much alkalinity will be left? If so, then what concentration of caustic soda (NaOH) must be added to avoid a change in the...
solve 3-2 based on answers 3-1
correct answers should be:
3-1 a. 20 mg/L b. 50 mg/L
3-2 a. sodium carbonate 645 tons/yr, $161,000 per yer
3-2 b. lime 341 tons/yr $17000
3-1 Calculate the decrease in alkalinity when using the following coagulant doses: a) alum = 40 mg/L and, b) ferric chloride = 50 mg/L 3-2 If the above ferric chloride addition is for phosphorous reduction at a wastewater plant with a flow rate of 8 MGD. Look up...
[3 pts] A water treatment plant consists of coagulation, flocculation, sedimentation, filtration and disinfection. The suspended solids concentration in the raw water coming into the plant is 500 mg/L and the plant treats 8 MGD. Alum (Al2(S04)3 14H20) is used as a coagulant with a dose of 50 mg/L. Compute the total solid sludge produced daily if a complete reaction of alum to aluminum hydroxide (Al(OH)3] occurs and 98% total solids are removed by the sedimentation and filtration steps. The...
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