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(6 pts) Perform a simple mass balance on the completely mixed reactor below to identify the recyc...
A wastewater flow of 18,000 m3/day is to be treated in a completely mixed activated sludge...
A wastewater flow of 18,000 m3/day is to be treated in a completely mixed activated sludge system at a concentration of 3000 mg/L MLSS (mixed liquor suspended solids). The secondary clarifier is designed to thicken the sludge to 12,000 mg/L. Assuming a growth yield coefficient of 0.5 Kg/Kg, an influent BOD of 100 mg/L with a residence time of 8 days, determine the following: a) The volume of the reactor b) The mass of the solids and the wet volume...
(30 points) A completely mixed activated sludge system comprised of an aerated reactor and a secondary clarifier with sludge return is going to treat 15,000 m/d of industrial wastewater. Th...
(30 points) A completely mixed activated sludge system comprised of an aerated reactor and a secondary clarifier with sludge return is going to treat 15,000 m/d of industrial wastewater. The primary effluent going to the reactor has a BODs of 1,100 mg/L that must be reduced to 150 mg/L prior to discharge to a municipal sewer. The pilot study was conducted and generated the following results: 3. Mean cell residence time- 5 day, MLSS concentration in the reactor 7.200 mg/L...
For the completely mixed activated sludge process shown below, the system boundary is shown by the...
For the completely mixed activated sludge process shown below, the system boundary is shown by the dash line. Qis the wastewater flow rate into the aeration tank; Q, is the flow rate of liquid containing microorganisms to be wasted: X is the microorganism concentration (VSS) entering the aeration tank: X is the microorganism concentration (MLVSS) in the aeration tank; X is the microorganism concentration (VSS) in the effluent from secondary settling tank X, is the microorganism (VSS) in sludge being...
A completely mixed activated sludge plant is designed to treat 10,000 m3/d of an industrial wastewater....
A completely mixed activated sludge plant is designed to treat
10,000 m3/d of an industrial wastewater. The wastewater has a BOD5
of 1200 mg/L. Pilot plant data indicates that a reactor volume of
6090 m3 with an MLSS concentration of 5000 mg/L should produce 83%
BOD5 removal. The value for Y is determined to be 0.7 kg/kg and the
value of kd is found to be 0.03 d–1. Under ow solids concentra-
tion is 12,000 mg/L. The ow diagram is...
For the completely mixed activated sludge process shown below, the system boundary is shown by the...
For the completely mixed activated sludge process shown below, the system boundary is shown by the dash line. Q is the wastewater flow rate into the aeration tank; Qu is the flow rate of liquid containing microorganisms to be wasted; X. is the microorganism concentration (VSS) entering the aeration tank; X is the microorganism concentration (MLVSS) in the aeration tank; Xe is the microorganism concentration (VSS) in the effluent from secondary settling tank; &c is the microorganism (VSS) in sludge...
This is all the information I was given For the completely mixed activated sludge process shown...
This is all the information I was given
For the completely mixed activated sludge process shown below, the system boundary is shown by the dash line. Q is the wastewater flow rate into the aeration tank; Qy is the flow rate of liquid containing microorganisms to be wasted; Xo is the microorganism concentration (VSS) entering the aeration tank; X is the microorganism concentration (MLVSS) in the aeration tank; He is the microorganism concentration (VSS) in the effluent from secondary settling...
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...
Completely Mixed Reactor
completely mixed activated-sludge plant is to treat 10 000 m3/d ofindustrial wastewater. The wastewater has a BOD5 of 1200 mg/L that must be reduced to 200 mg/L prior to discharge to a municipal sewer. Pilot-plant analysis indicates that a mean cell-residence time of 5 d maintaining MLSS concentration of 5000 mg/L produces the desired results. The vaue for Y is determined to be 0.7 kg/kg and the value for kd is found to be 0.03 d-1Determinea) The volume of the...
6) Mass balance and reactor design You have been hired as a high priced consultant to...
6) Mass balance and reactor design You have been hired as a high priced consultant to assess the performance of a reactor designed to treat a toxic chemical C to a "safe" level. You are given the following information: Q = 300 m²/d V = 2000 m Influent concentration (Ci) = 500 mg/L Required removal rate = 95% Degradation occurs according to the reaction rate equation r= -dC/dt = kС, where k= 3/d a. What order is this reaction? (2...
If the note growth rate of microorganisms is r'g, write a steady-state biomass balance equation for...
If the note growth rate of microorganisms is r'g, write a
steady-state biomass balance equation for the complete mixed
biological reactor (aeration tank) shown in the figure below.
If the influent Q = 0.150m3/s and BOD5 = 84 mg/L, volume of the
reactor V = 970 m3, and MLVSS concentration X = 2000 mg/L,
determine the F/M ratio.
balance equation for the 9. a) If the net growth rate of microorganisms isr'g, write a steady-state biomass complete mixed biological reactor...
A wastewater flow of 18,000 m3/day is to be treated in a completely mixed activated sludge system at a concentration of 3000 mg/L MLSS (mixed liquor suspended solids). The secondary clarifier is designed to thicken the sludge to 12,000 mg/L. Assuming a growth yield coefficient of 0.5 Kg/Kg, an influent BOD of 100 mg/L with a residence time of 8 days, determine the following: a) The volume of the reactor b) The mass of the solids and the wet volume...
(30 points) A completely mixed activated sludge system comprised of an aerated reactor and a secondary clarifier with sludge return is going to treat 15,000 m/d of industrial wastewater. The primary effluent going to the reactor has a BODs of 1,100 mg/L that must be reduced to 150 mg/L prior to discharge to a municipal sewer. The pilot study was conducted and generated the following results: 3. Mean cell residence time- 5 day, MLSS concentration in the reactor 7.200 mg/L...
For the completely mixed activated sludge process shown below, the system boundary is shown by the dash line. Qis the wastewater flow rate into the aeration tank; Q, is the flow rate of liquid containing microorganisms to be wasted: X is the microorganism concentration (VSS) entering the aeration tank: X is the microorganism concentration (MLVSS) in the aeration tank; X is the microorganism concentration (VSS) in the effluent from secondary settling tank X, is the microorganism (VSS) in sludge being...
A completely mixed activated sludge plant is designed to treat
10,000 m3/d of an industrial wastewater. The wastewater has a BOD5
of 1200 mg/L. Pilot plant data indicates that a reactor volume of
6090 m3 with an MLSS concentration of 5000 mg/L should produce 83%
BOD5 removal. The value for Y is determined to be 0.7 kg/kg and the
value of kd is found to be 0.03 d–1. Under ow solids concentra-
tion is 12,000 mg/L. The ow diagram is...
For the completely mixed activated sludge process shown below, the system boundary is shown by the dash line. Q is the wastewater flow rate into the aeration tank; Qu is the flow rate of liquid containing microorganisms to be wasted; X. is the microorganism concentration (VSS) entering the aeration tank; X is the microorganism concentration (MLVSS) in the aeration tank; Xe is the microorganism concentration (VSS) in the effluent from secondary settling tank; &c is the microorganism (VSS) in sludge...
This is all the information I was given
For the completely mixed activated sludge process shown below, the system boundary is shown by the dash line. Q is the wastewater flow rate into the aeration tank; Qy is the flow rate of liquid containing microorganisms to be wasted; Xo is the microorganism concentration (VSS) entering the aeration tank; X is the microorganism concentration (MLVSS) in the aeration tank; He is the microorganism concentration (VSS) in the effluent from secondary settling...
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...
6) Mass balance and reactor design You have been hired as a high priced consultant to assess the performance of a reactor designed to treat a toxic chemical C to a "safe" level. You are given the following information: Q = 300 m²/d V = 2000 m Influent concentration (Ci) = 500 mg/L Required removal rate = 95% Degradation occurs according to the reaction rate equation r= -dC/dt = kС, where k= 3/d a. What order is this reaction? (2...
If the note growth rate of microorganisms is r'g, write a
steady-state biomass balance equation for the complete mixed
biological reactor (aeration tank) shown in the figure below.
If the influent Q = 0.150m3/s and BOD5 = 84 mg/L, volume of the
reactor V = 970 m3, and MLVSS concentration X = 2000 mg/L,
determine the F/M ratio.
balance equation for the 9. a) If the net growth rate of microorganisms isr'g, write a steady-state biomass complete mixed biological reactor...
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