Please answer question 7.11 that is modified from the book, thank you!
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Please answer question 7.11 that is modified from the
book, thank you!
uent welr IS located...
Design a circular primary sedimentation basin for a town with a population of 45000 people. Assume...
Design a circular primary sedimentation basin for a town with a population of 45000 people. Assume the wastewater flow is 400 L/person/d. a) Design the tank for a nominal detention time of 2 hrs at an average overflow rate of 36 m3/ m2/d. b) Determine the tank depth and diameter given the tanks can be constructed in diameter increments of 1 m and depth increments of 0.5 m. c) Repeat the design considering 2 tanks. d) Prepare a summary table...
Water and Wastewater Treatment SP-WATER TREATMENT PLANT SEDIMENTATION BASIN Design a rectangular, horizontal flow sedimentation process...
Water and Wastewater Treatment
SP-WATER TREATMENT PLANT SEDIMENTATION BASIN Design a rectangular, horizontal flow sedimentation process for a water treatment plant for turbidity removal Design Maximum Day Flow-20,000 m2ld Two parallel sedimentation tank, each designed for half of the total flow Depth 4.5 m, Width 6 m, Surface Overflow Rate 50 m/day Chain and flight sludge collector will be used, hence the limiting width of 6 m. Minimum Hydraulic Retention Time (detention time) 2 hrs Maximum weir rate 250 m/day/m...
ine the surface area of a settling tank for the city of White Rock's 0.5 m...
ine the surface area of a settling tank for the city of White Rock's 0.5 m /s design flow using the design overflow rate 40 m/d.m2 Find the depth of the clarifier at a detention time of 95 min. Also find the length and width, assuming a minimum of two tanks would be used. Use common length to width ratios of 3.5:1. Lengths do not exceed 100m PROBLEM 2 (15) Q0.Sml
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...
Using the values provided in Table 21-1, minimum sewage elevation in interceptor of 112.60 m, maximum...
Using the values provided in Table 21-1, minimum
sewage elevation in interceptor of 112.60 m, maximum sewage
elevation in interceptor of 112.80 m, discharge elevation to
stilling well of 116.40 m, an average design flow of 8,600
m3/d, peaking factor for peak hour of 2.8 and minimum
factor of 0.49.
A. Determine the most efficient screw pump diameter
(in m)
B. How many flights are recommended
C. How many pumps are recommended in the final design?
Typical/comment TABLE 21-1 Typical...
1.A rectangular settling basin with a length to widith rato of 3:1 receives a flow of...
1.A rectangular settling basin with a length to widith rato of 3:1 receives a flow of 850000 l/d the basin depth is 4 m and the detention time of water in the tank is 144minutes (I)what are the surface overflow rate and horizontal velocity if the is distributed uniformly across the cross sectional area of the tank (II) Calculate the weir loading rate if the leght is 2 times the basin widith 2.Design a set of three rapid sand filters...
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...
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...
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...
Water and Wastewater Treatment
SP-WATER TREATMENT PLANT SEDIMENTATION BASIN Design a rectangular, horizontal flow sedimentation process for a water treatment plant for turbidity removal Design Maximum Day Flow-20,000 m2ld Two parallel sedimentation tank, each designed for half of the total flow Depth 4.5 m, Width 6 m, Surface Overflow Rate 50 m/day Chain and flight sludge collector will be used, hence the limiting width of 6 m. Minimum Hydraulic Retention Time (detention time) 2 hrs Maximum weir rate 250 m/day/m...
ine the surface area of a settling tank for the city of White Rock's 0.5 m /s design flow using the design overflow rate 40 m/d.m2 Find the depth of the clarifier at a detention time of 95 min. Also find the length and width, assuming a minimum of two tanks would be used. Use common length to width ratios of 3.5:1. Lengths do not exceed 100m PROBLEM 2 (15) Q0.Sml
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...
Using the values provided in Table 21-1, minimum
sewage elevation in interceptor of 112.60 m, maximum sewage
elevation in interceptor of 112.80 m, discharge elevation to
stilling well of 116.40 m, an average design flow of 8,600
m3/d, peaking factor for peak hour of 2.8 and minimum
factor of 0.49.
A. Determine the most efficient screw pump diameter
(in m)
B. How many flights are recommended
C. How many pumps are recommended in the final design?
Typical/comment TABLE 21-1 Typical...
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...
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