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Design rectangular primary sedimentation tank to remove 60% of SS and 30% of BOD from the...
Q4:Design rectangular primary sedimentation tank to remove 30% of BOD from the total an equivalent load...
Q4:Design rectangular primary sedimentation tank to remove 30% of BOD from the total an equivalent load of influent BOD and SS=700kg/day when the maximum expected flow is 8000m2/day and the detention time is 2.5hr .(take L:W=3:1). Then estimate: 1-The quantity of the sludge that is removed in an efficiency of 60% (assume moisture content of sludge =90%) 2-The effluent concentration of BOD and SS.
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...
A complete-mix activated sludge system is used to treat municipal wastewater after primary sedime...
A complete-mix activated sludge system is used to treat municipal wastewater after primary sedimentation at 20 °C with MLVSS concentration of 2000 g/m3. The discharge standard for soluble BOD, concentration in the effluent is 0.5 g/m. The characteristics of the primary influent are: flow Q -2000 m'/d, soluble BOD -200 g/m3, Using these data and the kinetic coefficients in following, determine 1. Theoretical solids retention time (SRT) in unit of days 2. Pk vss in unit of kg VSS/d 3....
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...
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...
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...
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...
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of...
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
reply ma as soon as possible 120 points total Due: October 23, 2019 Budget your time...
reply ma as soon as possible
120 points total Due: October 23, 2019 Budget your time carefully TRUE OR FALSE (45 points - 3 points cach): Mark whether the statements as written are "true" or "false". If the statement is false, make minor changes to the statement so that the statement is true. The primary adverse health effect resulting from the disposal of mercury wastes into Minamata Bay was dysentery The flow regime in horizontal velocity grit chambers approaches continuous...
Q4:Design rectangular primary sedimentation tank to remove 30% of BOD from the total an equivalent load of influent BOD and SS=700kg/day when the maximum expected flow is 8000m2/day and the detention time is 2.5hr .(take L:W=3:1). Then estimate: 1-The quantity of the sludge that is removed in an efficiency of 60% (assume moisture content of sludge =90%) 2-The effluent concentration of BOD and SS.
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...
A complete-mix activated sludge system is used to treat municipal wastewater after primary sedimentation at 20 °C with MLVSS concentration of 2000 g/m3. The discharge standard for soluble BOD, concentration in the effluent is 0.5 g/m. The characteristics of the primary influent are: flow Q -2000 m'/d, soluble BOD -200 g/m3, Using these data and the kinetic coefficients in following, determine 1. Theoretical solids retention time (SRT) in unit of days 2. Pk vss in unit of kg VSS/d 3....
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...
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...
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
reply ma as soon as possible
120 points total Due: October 23, 2019 Budget your time carefully TRUE OR FALSE (45 points - 3 points cach): Mark whether the statements as written are "true" or "false". If the statement is false, make minor changes to the statement so that the statement is true. The primary adverse health effect resulting from the disposal of mercury wastes into Minamata Bay was dysentery The flow regime in horizontal velocity grit chambers approaches continuous...
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