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Water and Wastewater Treatment
SP-WATER TREATMENT PLANT SEDIMENTATION BASIN Design a rectangular, horizontal flow sedimentation process...
Q3) [15 points] Design a horizontal flow rectangular sedimentation basin for a maximum flowrate of 43,200...
Q3) [15 points] Design a horizontal flow rectangular sedimentation basin for a maximum flowrate of 43,200 m3/d. Assume an overflow rate of 40 m3/d.m2 and a water temperature of 12 °C. Provide the following in your summary of the design: Qdesign; Number of tanks; Width of each tank; Length of each tank; Side water depth; Depth of sludge zone; L:D; vf; Reynolds number; Froude Number; Number of Launders; Launder Length; Wier Loading; Type of sludge collector.
A drinking water treatment plant is designed with three sedimentation basins in parallel. Each basin is...
A drinking water treatment plant is designed with three sedimentation basins in parallel. Each basin is designed with an overflow rate of 1,200 gpd/ft2 (gallons per day per square foot). (“In parallel” means that the flow is split evenly between the basins as shown below.) A. If the plant flow is 20 mgd (million gallons per day), find the plan area of each basin in square feet. B. Calculate the dimensions of the basins (length and width in feet) if...
A wastewater treatment plant that treats wastewater to secondary treatment standards uses a primary sedimentation process...
A wastewater treatment plant that treats wastewater to secondary treatment standards uses a primary sedimentation process followed by conventional activated sludge process composed of covered aeration tanks and secondary clarifiers. You are asked to calculate the different operation parameters to make sure that the system is operated within normal process ranges listed in the reference tables below. Table 5-20 Typical design information for primary sedimentation tanks U.S. customary units Item Unit Range Typical Primary sedimentation tanks followed by secondary treatment...
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...
Question #2 (25 points) A water treatment facility has 4 primary sedimentation tanks that operate in...
Question #2 (25 points) A water treatment facility has 4 primary sedimentation tanks that operate in parallel. Each tank has the following dimensions: L: 55m, (length), W: 10.7m (width) and H: 3.0 m (depth) The tank each have a design capacity of 0.4 m”/s. Answer the following questions, a. What is the overflow rate (m/h)? b. What is the hydraulic detention time (h)? c. For spherical particles with a density of sand (2.65g/cm²), what is the smallest particle that is...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 ). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (m) Particle density (kg/m) Percentile 50 1.4 x 10...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m3/s; temperature: 20 ℃). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (m) Particle density (kg/m3) Percentile 50 1.4 x 103...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m3/s; temperature: 20 ℃). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (μm) Particle density (kg/m3) Percentile ≥ 50 ≥ 1.4...
Problem 2 (20 points) You are hired to design a rectangular sedimentation tank (length to width...
Problem 2 (20 points) You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 °C). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Percentile Particle diameter (um) > 50 > 60...
Design a grit chamber for a wastewater treatment plant with an average flowrate of 25,000 m3/d...
Design a grit chamber for a wastewater treatment plant with an average flowrate of 25,000 m3/d and a peak flowrate of 55,000 m/d. The detention time at peak flow is 3.0 min. The width to depth ratio is 2:1. Use a depth of 2 m. The aeration rate is 0.4 m/min per m of tank length. a) Determine the total air required, (15 points) b) Dimensions of the grit chamber, (15 points) c) Determine detention time at average flow. (10...
Q3) [15 points] Design a horizontal flow rectangular sedimentation basin for a maximum flowrate of 43,200 m3/d. Assume an overflow rate of 40 m3/d.m2 and a water temperature of 12 °C. Provide the following in your summary of the design: Qdesign; Number of tanks; Width of each tank; Length of each tank; Side water depth; Depth of sludge zone; L:D; vf; Reynolds number; Froude Number; Number of Launders; Launder Length; Wier Loading; Type of sludge collector.
A wastewater treatment plant that treats wastewater to secondary treatment standards uses a primary sedimentation process followed by conventional activated sludge process composed of covered aeration tanks and secondary clarifiers. You are asked to calculate the different operation parameters to make sure that the system is operated within normal process ranges listed in the reference tables below. Table 5-20 Typical design information for primary sedimentation tanks U.S. customary units Item Unit Range Typical Primary sedimentation tanks followed by secondary treatment...
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...
Question #2 (25 points) A water treatment facility has 4 primary sedimentation tanks that operate in parallel. Each tank has the following dimensions: L: 55m, (length), W: 10.7m (width) and H: 3.0 m (depth) The tank each have a design capacity of 0.4 m”/s. Answer the following questions, a. What is the overflow rate (m/h)? b. What is the hydraulic detention time (h)? c. For spherical particles with a density of sand (2.65g/cm²), what is the smallest particle that is...
You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time ~ 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 ). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Particle diameter (m) Particle density (kg/m) Percentile 50 1.4 x 10...
Problem 2 (20 points) You are hired to design a rectangular sedimentation tank (length to width ratio = 3:1 and detention time 2 h) for a new water treatment plant (flow rate: 0.04 m/s; temperature: 20 °C). Suspended particles can be removed when the overflow rate is higher than the settling velocities of particles. You have finished characterizing the influent particles (assuming all of them are spherical) and obtained the following results: Percentile Particle diameter (um) > 50 > 60...
Design a grit chamber for a wastewater treatment plant with an average flowrate of 25,000 m3/d and a peak flowrate of 55,000 m/d. The detention time at peak flow is 3.0 min. The width to depth ratio is 2:1. Use a depth of 2 m. The aeration rate is 0.4 m/min per m of tank length. a) Determine the total air required, (15 points) b) Dimensions of the grit chamber, (15 points) c) Determine detention time at average flow. (10...
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