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3 A water treatment plant is being designed for a flow of 1.6 m3/s. m is....
A water treatment plant is to be designed to supply a daily flow of 35000 m/d....
A water treatment plant is to be designed to supply a daily flow of 35000 m/d. The raw water is taken from a local river that has a turbid water. The main treatment units of this treatment plant are as illustrated in Figure 1: Screen River Water > Sedimentation Coagulation Flocculation Filtration Adsorption Adsor prion > Disinfection Storage Distribution Figure 1: Water treatment plant main unit The design criteria of each treatment unit is as follows: 1. Coagulation tanks (Rapid...
B. A water treatment plant is to process water to a population of 150000 The following data are f...
b. A water treatment plant is to process water to a population of 150000 The following data are furnished to facilitate the design of the rapid sand filter units Average day demand 300 L/cap.d 24h Assume that the maximum day demand 1.5 times the average Number of filter units Rate of filtration: Length: Maximum lateral travel of washwater not to exceed 1 m Rate of backwash: Desirable sand bed expansion: 40% Washwater tank capacity: to wash two filters for 5...
Primary clarifier is to be designed for a municipal wastewater treatment plant with a flow of 416...
primary clarifier is to be designed for a municipal wastewater treatment plant with a flow of 4160 m/d and peak flow during the day of 3.10 times the average hourly flow. Pertinent data are: peak overflow rate 73.3 m/d.-m2, maximum peak weir loading 373 m3/d-m, and minimum tank depth 2.13 m. Determine: A. The clarifier diameter B. The side water deptlh C. The peak weir loading. Is it acceptable? D. The percent suspended solids removal on the basis of the...
A model town with a population of 100000 people has a drinking water treatment plant. As...
A model town with a population of 100000 people has a drinking water treatment plant. As an engineer, you are asked to design a sand filter system for the town. Determining: a) the total area of the filter, b) how many filter cells are needed if each filter cell has an area of 30 m2, c) depth of the sand, d) filtration rate, e) backwash rate if a rotary-jet-type surface wash is used, and f) the quantity of treated water...
Rapid filtration plant treats flow of 0.5 m'ls, the filtration rate is 180 m/day, surface area...
Rapid filtration plant treats flow of 0.5 m'ls, the filtration rate is 180 m/day, surface area of each filter is 24 m2, the wash water rate and wash duration are 0.8 m/m2.min and 7 minutes respectively, Calculate: Number of filters in the plant. The volume of water required to wash two filters at the same time. Diameter of the influent pipe to each filter, assume water velocity in the pipe 0.32 m/s. Diameter of wash water pipe, assume water velocity...
A water treatment plant is processing water at a flow rate of 1.5 m/s using three parallel treatm...
A water treatment plant is processing water at a flow rate of 1.5 m/s using three parallel treatment trains. The detention times for the rapid mix tank, flocculation basin, and rectangular sedimentation basin are 10 sec, 30 min and 60 min, respectively. The velocity gradients for the rapid mix and flocculation tanks are 900 s and 60:40:20 s1, respectively. The viscosity of water is 0.001 Pa-s. (a) Determine the size and power requirements for rapid mix tanks. (b) Determine the...
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...
Ex. 4 A water treatment plant with a maximum daily flow of 3 m/s (1.5 times...
Ex. 4 A water treatment plant with a maximum daily flow of 3 m/s (1.5 times the average flow) is treating a surface water. The water is coagulated with alum and the alum floc was measured to have a settling velocity of 2.2 m/h at 10 °C. Design a horizontal-flow rectangular sedimentation system based on the maximum day flowrate. Include the number of basins, dimensions and criteria checks.
1. The design flow for a water treatment plant (WTP) is 1 MGD (3.8x103 m'/d). The...
1. The design flow for a water treatment plant (WTP) is 1 MGD (3.8x103 m'/d). The rapid mixing tank will have a mechanical mixer and the average alum dosage will be 30 mg/L theoretical mean hydraulic detention time of the tank will be 1 minute. Determine the following: a) the quantity of alum needed on a daily basis in kg/d, b) the dimensions of the tank in meters for a tank with equal length, width, and dept c) the power...
The average flow rate at a small sewage treatment plant is 20,000 m3/d. Design rectangular primary...
The average flow rate at a small sewage treatment plant is 20,000 m3/d. Design rectangular primary clarifier with a channel width of 6 m. Use minimum two clarifiers, an overflow rate of 40 m3/m2-day and a side water depth of 4 m.
A water treatment plant is to be designed to supply a daily flow of 35000 m/d. The raw water is taken from a local river that has a turbid water. The main treatment units of this treatment plant are as illustrated in Figure 1: Screen River Water > Sedimentation Coagulation Flocculation Filtration Adsorption Adsor prion > Disinfection Storage Distribution Figure 1: Water treatment plant main unit The design criteria of each treatment unit is as follows: 1. Coagulation tanks (Rapid...
b. A water treatment plant is to process water to a population of 150000 The following data are furnished to facilitate the design of the rapid sand filter units Average day demand 300 L/cap.d 24h Assume that the maximum day demand 1.5 times the average Number of filter units Rate of filtration: Length: Maximum lateral travel of washwater not to exceed 1 m Rate of backwash: Desirable sand bed expansion: 40% Washwater tank capacity: to wash two filters for 5...
primary clarifier is to be designed for a municipal wastewater treatment plant with a flow of 4160 m/d and peak flow during the day of 3.10 times the average hourly flow. Pertinent data are: peak overflow rate 73.3 m/d.-m2, maximum peak weir loading 373 m3/d-m, and minimum tank depth 2.13 m. Determine: A. The clarifier diameter B. The side water deptlh C. The peak weir loading. Is it acceptable? D. The percent suspended solids removal on the basis of the...
Rapid filtration plant treats flow of 0.5 m'ls, the filtration rate is 180 m/day, surface area of each filter is 24 m2, the wash water rate and wash duration are 0.8 m/m2.min and 7 minutes respectively, Calculate: Number of filters in the plant. The volume of water required to wash two filters at the same time. Diameter of the influent pipe to each filter, assume water velocity in the pipe 0.32 m/s. Diameter of wash water pipe, assume water velocity...
A water treatment plant is processing water at a flow rate of 1.5 m/s using three parallel treatment trains. The detention times for the rapid mix tank, flocculation basin, and rectangular sedimentation basin are 10 sec, 30 min and 60 min, respectively. The velocity gradients for the rapid mix and flocculation tanks are 900 s and 60:40:20 s1, respectively. The viscosity of water is 0.001 Pa-s. (a) Determine the size and power requirements for rapid mix tanks. (b) Determine the...
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...
Ex. 4 A water treatment plant with a maximum daily flow of 3 m/s (1.5 times the average flow) is treating a surface water. The water is coagulated with alum and the alum floc was measured to have a settling velocity of 2.2 m/h at 10 °C. Design a horizontal-flow rectangular sedimentation system based on the maximum day flowrate. Include the number of basins, dimensions and criteria checks.
1. The design flow for a water treatment plant (WTP) is 1 MGD (3.8x103 m'/d). The rapid mixing tank will have a mechanical mixer and the average alum dosage will be 30 mg/L theoretical mean hydraulic detention time of the tank will be 1 minute. Determine the following: a) the quantity of alum needed on a daily basis in kg/d, b) the dimensions of the tank in meters for a tank with equal length, width, and dept c) the power...
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