Design 4 trickling filters based on the following information:
BOD = 215.02 mg/l assuming 30% BOD removed in primary sedimentation
TSS = 290.84 mg/l assuming 50% TSS removed in primary sedimentation
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Design 4 trickling filters based on the following
information:
BOD = 215.02 mg/l assuming 30% BOD...
Calculate BOD loading, hydraulic loading, BOD removal efficiency, and effluent BOD concentration for a single-stage trickling...
Calculate BOD loading, hydraulic loading, BOD removal efficiency, and effluent BOD concentration for a single-stage trickling filter based on the following data: Average raw wastewater flow = 500 gpm Recirculation ration = 0.3 Primary effluent = 150 mg/L Diameter of filter = 20 meter Depth of media = 3 meter Wastewater temperature = 22 °C
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...
:A wastewater treatment plant consisted of a primary sedimentation tank and two stages of trickling filter...
:A wastewater treatment plant consisted of a primary sedimentation tank and two stages of trickling filter received flow 44L/Sec , the BOD concentration in raw sewage =440 mg/L , 30% BOD removed in the primary sedimentation tank, volume of filter (first stage )=826000L, volume of filter (second stage)=2563000L, recirculation rate =0.5 in second tank while no recirculation in first tank. Determine the following: 1-The effluent concentration of BOD in each unit. 2-Treatment efficiency of each unit. 3-Treatment efficiency of plant....
The design flow for a plant, using 4 tricking filters with a plastic media, is 0.5 mgd. the filte...
the design flow for a plant, using 4 tricking filters with a plastic media, is 0.5 mgd. the filters will be in parallel, the influent bod5 to filters will be 200 mg/l, the required effluent bod 5 will e 25 mg/l, the trickling filter design depth is 25 ft. lab testing conducted at 25c and 40 ft depth found the biodegradability constant to be 0.865/ft 0.5 d ^0.5. find the diameter required for each trickling filters.
\The flow rate to treat is 5.6 MGD and the BOD concentration is 150 mg/L. The...
\The flow rate to treat is 5.6 MGD and the BOD concentration is 150 mg/L. The design solids concentration (X) at steady-state is 2,000 mg/L. The design MCRT is 7 days. The kinetic coefficients are as follows: k = 2 g BOD/g cells*day; Ks = 25 mg BOD/L; kd = 0.06 1/day; Y = 0.5 g cells/g BOD. The influent ammonia concentration is 40 mg/L and nitrification is needed. It takes 1400 ft3 of air per pound of BOD. Use...
(20 pts) The ultimate BOD of a domestic wastewater is 275 mg/L and the e based...
(20 pts) The ultimate BOD of a domestic wastewater is 275 mg/L and the e based rate constant k=0.24 d a. (4 pts) What will be the 5-day BOD (Sample-1)? b. (4 pts) What will be the 7-day BOD? (Sample-1)? c. (4 pts) A different sample has the same ultimate BOD given in the question, but the 20 °C k value (e based) is equal to 0.36 dl Determine the 5-day BOD of this sample (Sample-2). d. (8 pts) Please...
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...
4. (40 pts) You need to design a set of activated sludge aeration tanks. The flow...
4. (40 pts) You need to design a set of activated sludge aeration tanks. The flow rate to treat is 5.6 MGD and the BOD concentration is 150 mg/L. The design solids concentration (X) at steady-state is 2,000 mg/L. The design MCRT is 7 days. The kinetic coefficients are as follows: k = 2 g BOD!g cells*day; K = 25 mg BOD/L; k, = 0.06 1/day; Y = 0.5 g cells/G BOD. The influent ammonia concentration is 40 mg/L and...
A FWS constructed wetland is being designed to polish grey water from a school building in...
A FWS constructed wetland is being designed to polish grey water
from a school building in Indiana. The grey water characteristics
are 80 mg/L BOD, 20 mg/L TSS and 10 mg/L nitrogen (as ammonia
nitrogen). They would like their constructed wetland to reduce
their BOD to 15 mg/L before the water exits the wetland. No
treatment objectives are required for TSS, nitrogen or pathogens in
the wetland. Decaying plant matter provides a background BOD
concentration (C*) of 7 mg/L. Assume...
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...
Calculate BOD loading, hydraulic loading, BOD removal efficiency, and effluent BOD concentration for a single-stage trickling filter based on the following data: Average raw wastewater flow = 500 gpm Recirculation ration = 0.3 Primary effluent = 150 mg/L Diameter of filter = 20 meter Depth of media = 3 meter Wastewater temperature = 22 °C
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...
(20 pts) The ultimate BOD of a domestic wastewater is 275 mg/L and the e based rate constant k=0.24 d a. (4 pts) What will be the 5-day BOD (Sample-1)? b. (4 pts) What will be the 7-day BOD? (Sample-1)? c. (4 pts) A different sample has the same ultimate BOD given in the question, but the 20 °C k value (e based) is equal to 0.36 dl Determine the 5-day BOD of this sample (Sample-2). d. (8 pts) Please...
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...
4. (40 pts) You need to design a set of activated sludge aeration tanks. The flow rate to treat is 5.6 MGD and the BOD concentration is 150 mg/L. The design solids concentration (X) at steady-state is 2,000 mg/L. The design MCRT is 7 days. The kinetic coefficients are as follows: k = 2 g BOD!g cells*day; K = 25 mg BOD/L; k, = 0.06 1/day; Y = 0.5 g cells/G BOD. The influent ammonia concentration is 40 mg/L and...
A FWS constructed wetland is being designed to polish grey water
from a school building in Indiana. The grey water characteristics
are 80 mg/L BOD, 20 mg/L TSS and 10 mg/L nitrogen (as ammonia
nitrogen). They would like their constructed wetland to reduce
their BOD to 15 mg/L before the water exits the wetland. No
treatment objectives are required for TSS, nitrogen or pathogens in
the wetland. Decaying plant matter provides a background BOD
concentration (C*) of 7 mg/L. Assume...
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...
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