Using the Envirotech Systems equation and the treatability factor from Problem 24-1, estimate the depth of...
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Using the Envirotech Systems equation and the treatability factor from Problem 24-1, estimate the depth of filter required to achieve 82.7% BOD5 removal if the wastewater temperature is 20?C and the hydraulic loading rate is 41.1 m/d.
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Using the Envirotech Systems equation and the treatability
factor from Problem 24-1, estimate the depth of...
It is required that a wastewater flow of 2 MGD with a strength of 300 mg/L...
It is required that a wastewater flow of 2 MGD with a strength of 300 mg/L BOD5 be treated to remove 90% of the BOD5. To achieve this, a 25-ft deep filter will be constructed and plastic media will be used. A treatability study has shown that n = 0.5 and K= 0.05 min-1 at 20⁰C. If the critical wastewater temperature is expected to be 10⁰C, what size filter should be required? Recirculation will not be used. Use Excel and...
10) Determine the size of two stage trickling filter using the NRC equations. Assume both filters have the same effi...
10) Determine the size of two stage trickling filter using the NRC equations. Assume both filters have the same efficiency BOD removal and the same recirculation ratio. Other conditions are as follows o Wastewater temperature 20 C o Wastewater flow, Q 3785 n/d o Influent BODs 195 mg/l Design effluent BOD = 20mg/ o Depth of each filter 2m o Recirculation for filters 1 and 2, r 218
10) Determine the size of two stage trickling filter using the NRC...
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...
Two trickling filters operating in parallel are being designed to treat the domestic wastewater from a town of 5500 people where the average per-capita wastewater generation is 450 liters per person p...
Two trickling filters operating in parallel are being designed to treat the domestic wastewater from a town of 5500 people where the average per-capita wastewater generation is 450 liters per person per day. A plastic trickling filter media and filter height of 3.5 m have been selected. The influent BOD5 is 120 mg/L and the facility must meet an NPDES permit limiting effluent BOD5 to 35 mg/L. The filter media constant (n) is 0.67 and the BOD decay constant for...
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...
Can someone solve this please? ENVE 4410/5510 INTRODUCTION TO ENVIRONMENTAL ENGINEERING PROBLEM SET NO. 9 Filtration...
Can someone solve this please?
ENVE 4410/5510 INTRODUCTION TO ENVIRONMENTAL ENGINEERING PROBLEM SET NO. 9 Filtration 1. (VH, p.348,10.28) Using the Kozeny equation, calculate the initial head loss (in ft) through a filter with 18 in. of uniform sand having a porosity of 0.42 and a grain diameter of 1.6 x 103 ft. Assume spherical particles and a water temperature of 50°F. The filtration rate is 2.5 gpm/ft 2. (DC, p 280; 3-81) The rapid sand filter being designed for...
14.13 (a) only Spreadsheet from HW 3: Manning: 1. Numerically solve for the normal depth using...
14.13 (a) only
Spreadsheet from HW 3:
Manning:
1. Numerically solve for the normal depth using either MS-Excel or Matlab. Hint: your spreadsheet for critical depth in HW3 is a good place to start. 14.13 The channel in Problem 14.7 is excavated in smooth rock to a bed slope of 0.2%. Deter- mine the (a) normal depth of flow, (b) critical slope, and (c) state of flow in the channel. 14.7 A trapezoidal channel has a bed width of 3.5...
2. A completely mixed activated sludge process is designed to treat 20,000 m/d of domestic wastew...
2. A completely mixed activated sludge process is designed to treat 20,000 m/d of domestic wastewater having a BODs concentration of 250 mg/L following primary treatment. The NPDES permit requirement for effluent BODs and TSS is 20 mg/L for each. The biokinetic parameters have beern established as: yield 0.6, k 5/d, K-60 mg/L, and kd 0.06/d. The MLVSS concentration in the aeration tank is to be maintained at 3000 mg/L and the ratio of VSS/TSS is 0.75. Assume that the...
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...
1. In 1970, the total phosphorus (TP) load to Lake Erie was 18.150 tonnes/year (where tonnes...
1. In 1970, the total phosphorus (TP) load to Lake Erie was 18.150 tonnes/year (where tonnes or metric ton = 1,000 kg). The surface area, volume, and outflow from Lake Erie are given as 25.2 x 10 m² 468 x 10 m, and 182 x 10 m yr, respectively. Based on previous evaluations, the total phosphorus is removed from the lake with an apparent settling rate of 16 m/yr. a. Draw a diagram and write the mass balance equation for...
10) Determine the size of two stage trickling filter using the NRC equations. Assume both filters have the same efficiency BOD removal and the same recirculation ratio. Other conditions are as follows o Wastewater temperature 20 C o Wastewater flow, Q 3785 n/d o Influent BODs 195 mg/l Design effluent BOD = 20mg/ o Depth of each filter 2m o Recirculation for filters 1 and 2, r 218
10) Determine the size of two stage trickling filter using the NRC...
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...
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...
Can someone solve this please?
ENVE 4410/5510 INTRODUCTION TO ENVIRONMENTAL ENGINEERING PROBLEM SET NO. 9 Filtration 1. (VH, p.348,10.28) Using the Kozeny equation, calculate the initial head loss (in ft) through a filter with 18 in. of uniform sand having a porosity of 0.42 and a grain diameter of 1.6 x 103 ft. Assume spherical particles and a water temperature of 50°F. The filtration rate is 2.5 gpm/ft 2. (DC, p 280; 3-81) The rapid sand filter being designed for...
14.13 (a) only
Spreadsheet from HW 3:
Manning:
1. Numerically solve for the normal depth using either MS-Excel or Matlab. Hint: your spreadsheet for critical depth in HW3 is a good place to start. 14.13 The channel in Problem 14.7 is excavated in smooth rock to a bed slope of 0.2%. Deter- mine the (a) normal depth of flow, (b) critical slope, and (c) state of flow in the channel. 14.7 A trapezoidal channel has a bed width of 3.5...
2. A completely mixed activated sludge process is designed to treat 20,000 m/d of domestic wastewater having a BODs concentration of 250 mg/L following primary treatment. The NPDES permit requirement for effluent BODs and TSS is 20 mg/L for each. The biokinetic parameters have beern established as: yield 0.6, k 5/d, K-60 mg/L, and kd 0.06/d. The MLVSS concentration in the aeration tank is to be maintained at 3000 mg/L and the ratio of VSS/TSS is 0.75. Assume that the...
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...
1. In 1970, the total phosphorus (TP) load to Lake Erie was 18.150 tonnes/year (where tonnes or metric ton = 1,000 kg). The surface area, volume, and outflow from Lake Erie are given as 25.2 x 10 m² 468 x 10 m, and 182 x 10 m yr, respectively. Based on previous evaluations, the total phosphorus is removed from the lake with an apparent settling rate of 16 m/yr. a. Draw a diagram and write the mass balance equation for...
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