Homework Answers
yes , we can use inclined plates or tubes in the final clarifiers of the activated sludge process because the inclined plates / tubes between 45° and 60°
leads to allow gravity drainage of accumulated solids but the tubes with shallow angles of inclination typically need periodic draining and cleaning.
Add Answer to:
Can we use inclined plates or tubes in the final clarifiers of the activated sludge process?
Name: ID: 2. The activated sludge process can be used to remove organic carbon (BOD) and nitrogen species (ammonia,...
Name: ID: 2. The activated sludge process can be used to remove organic carbon (BOD) and nitrogen species (ammonia, nitrite and nitrate) from wastewater. The schematic below is a of the 4-stage Bardenpho process that can achieve low levels of ammonia and nitrate in the final effluent). Please describe how BOD and nitrogen species concentrations evolve in each stage, include what the return activated sludge, the internal mixed liquor return, and the methanol injection are used for. "nitrite does not...
T/F (true/false) Wastewater Treatment A principle objective of the conventional activated sludge process is to lower...
T/F (true/false) Wastewater Treatment A principle objective of the conventional activated sludge process is to lower BOD. During the conventional activated sludge process, ammonium is converted to nitrate. A key requirement of the conventional activated sludge process is that it be carried out under strictly anaerobic conditions. In typical systems, denitrification occurs in an aerobic step after the activated sludge step. In the Modified Ludzak-Ettinger (MLE) process (and its variants), "mixed liquor" from the end of the aerobic step is...
1. This semester, we will scc the use of clarifiers and sedimentation basins to settle suspended...
1. This semester, we will scc the use of clarifiers and sedimentation basins to settle suspended solids out of liquid streams. Usually, the sludge that comes from the bottom of a clarifier is sent to a belt press filter to further dewater the sludge. Consider the following process diagram. clarifier belt press thickened sludge The table below gives the volumetric flow rate and the concentration of suspended solids in some of the streams shown in the diagram. You may assume...
1. A circular secondary clarifier (a.k.a. a final clarifier) is to be designed for an activated...
1. A circular secondary clarifier (a.k.a. a final clarifier) is to be designed for an activated sludge treatment plant serving a municipality. The state regulatory agency criteria for final clarifiers used for activated sludge are: Peak SOR = 1,200 gal/day-ft2 Average SOR = 500 gal/day-ft2 Peak solids loading 50 lb/day-ft Peak weir loading-30,000 gal/day.ft The average flow to the aeration basin prior to junction with the recycle line is 3.5 MGD ·The recycled sludge flow is 30 percent of the...
a) If a typical activated sludge treatment works is retrofitted to incorporate MBR process, explain how...
a) If a typical activated sludge treatment works is retrofitted to incorporate MBR process, explain how wastewater and sludge treatment lines in the treatment works need to be modified. b) What are the effects of MBR installation on existing sludge handling approaches?
For the following activated sludge process unit, find the correct SRT(hr) and F/M ratio, respectively, as:...
For the following activated sludge process unit, find the correct SRT(hr) and F/M ratio, respectively, as: HRT: 1.5 hr Biological reactor Influent Secondary clarifier Effluent Q: 12000 m3/d X= 3500 mg/L BOD: 10 mg/L Setting BOD: 100 mg/L Derby matter XR=8000 mg/L Retum activated sludge Qw/Q=5% Surplus sludge
Use the following data to size (volume in gallons) an activated sludge reactor basin (CFSTR with...
Use the following data to size (volume in gallons) an activated sludge reactor basin (CFSTR with recycle and Monod) MLSS = 3500 mg/l MLVSS = 80% Yield Coeffiecient = 0.6 MLVSS BOD5 influent to the activated sludge basin = 230 mg/l BOD5 effluent to the activated sludge basin = 50 mg/l MCRT is 6 days Endogenous decay coefficient is 0.06d^-1 flow rate = 7 MGD
Question 2 A complete mix activated sludge process is to be used for biological treatment. Assume...
Question 2 A complete mix activated sludge process is to be used for biological treatment. Assume the following for the activated sludge process: • Plant influent BODs of 156 mg/L • Sludge age is 8 days Biomass yield (Y) of 0.54 kg biomass / kg BOD • Endogenous decay rate (kd) = 0.05 day! • Ks=10 g BOD/m3 Biomass concentration (X) of 2700 mg/L • recycle biomass concentration (Xr) of 12,000 mg/L The fresh flow rate treated is 1000 m²/day...
just part e please Activated sludge design A completely mixed activated sludge process is designed to...
just part e please
Activated sludge design A completely mixed activated sludge process is designed to treat 20,000 m/day of domestic wastewater having a BODs concentration of 250 mg/L following primary treatment. The NPDES permit requires that the effluent BOD, and TSS concentra- tions not exceed 20 mg/L on an annual basis. The following biokinetic coefficients are to be used in the design of the process: Y = 0.6 mg VSS/mg BODs, k = 5d"! Ks = 60 mg/L BODs,...
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...
Name: ID: 2. The activated sludge process can be used to remove organic carbon (BOD) and nitrogen species (ammonia, nitrite and nitrate) from wastewater. The schematic below is a of the 4-stage Bardenpho process that can achieve low levels of ammonia and nitrate in the final effluent). Please describe how BOD and nitrogen species concentrations evolve in each stage, include what the return activated sludge, the internal mixed liquor return, and the methanol injection are used for. "nitrite does not...
T/F (true/false) Wastewater Treatment A principle objective of the conventional activated sludge process is to lower BOD. During the conventional activated sludge process, ammonium is converted to nitrate. A key requirement of the conventional activated sludge process is that it be carried out under strictly anaerobic conditions. In typical systems, denitrification occurs in an aerobic step after the activated sludge step. In the Modified Ludzak-Ettinger (MLE) process (and its variants), "mixed liquor" from the end of the aerobic step is...
1. This semester, we will scc the use of clarifiers and sedimentation basins to settle suspended solids out of liquid streams. Usually, the sludge that comes from the bottom of a clarifier is sent to a belt press filter to further dewater the sludge. Consider the following process diagram. clarifier belt press thickened sludge The table below gives the volumetric flow rate and the concentration of suspended solids in some of the streams shown in the diagram. You may assume...
1. A circular secondary clarifier (a.k.a. a final clarifier) is to be designed for an activated sludge treatment plant serving a municipality. The state regulatory agency criteria for final clarifiers used for activated sludge are: Peak SOR = 1,200 gal/day-ft2 Average SOR = 500 gal/day-ft2 Peak solids loading 50 lb/day-ft Peak weir loading-30,000 gal/day.ft The average flow to the aeration basin prior to junction with the recycle line is 3.5 MGD ·The recycled sludge flow is 30 percent of the...
For the following activated sludge process unit, find the correct SRT(hr) and F/M ratio, respectively, as: HRT: 1.5 hr Biological reactor Influent Secondary clarifier Effluent Q: 12000 m3/d X= 3500 mg/L BOD: 10 mg/L Setting BOD: 100 mg/L Derby matter XR=8000 mg/L Retum activated sludge Qw/Q=5% Surplus sludge
Question 2 A complete mix activated sludge process is to be used for biological treatment. Assume the following for the activated sludge process: • Plant influent BODs of 156 mg/L • Sludge age is 8 days Biomass yield (Y) of 0.54 kg biomass / kg BOD • Endogenous decay rate (kd) = 0.05 day! • Ks=10 g BOD/m3 Biomass concentration (X) of 2700 mg/L • recycle biomass concentration (Xr) of 12,000 mg/L The fresh flow rate treated is 1000 m²/day...
just part e please
Activated sludge design A completely mixed activated sludge process is designed to treat 20,000 m/day of domestic wastewater having a BODs concentration of 250 mg/L following primary treatment. The NPDES permit requires that the effluent BOD, and TSS concentra- tions not exceed 20 mg/L on an annual basis. The following biokinetic coefficients are to be used in the design of the process: Y = 0.6 mg VSS/mg BODs, k = 5d"! Ks = 60 mg/L BODs,...
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...
Most questions answered within 3 hours.
-
Although Epicurus advocates pursuing pleasure for the
good life, discuss a few reasons why he does...
asked 42 seconds ago -
Problem 1: Present entries to record the selected transactions
described below:
(a)
Issued $2,790,000 of 5-year,...
asked 7 minutes ago -
Using technology to support HR activities increases:
a.
the efficiency of the administrative HR functions.
b....
asked 7 minutes ago -
1. List the features used to classify leaf
types.
2. List some characteristics that are shared...
asked 12 minutes ago -
The three elements of Value Proposition, Key Customers, and
Capabilities operate within an environment. Which of...
asked 15 minutes ago -
Katelynn, a physician, earns $200,000 from her medical practice
in the current year. She receives $45,000...
asked 22 minutes ago -
Each row of the table below describes an aqueous solution at
25°C
.
The second column...
asked 27 minutes ago -
A horizontal wire is at y = 0. Current travels in the +x
direction. The magnetic...
asked 27 minutes ago -
Let X be a continuous random variable whose PDF is Let X be a
continuous random...
asked 48 minutes ago -
Martinez Company’s relevant range of production is 7,500 units
to 12,500 units. When it produces and...
asked 46 minutes ago -
A football with a mass of 1.2 kg is kicked from ground level to
a height...
asked 52 minutes ago -
Remember: Changes in supply determinants shift supply, and
changes in demand determinants shift demand. We say...
asked 51 minutes ago