Read the question. I already posted it before and 'Rashid' copied it from an earlier wrong solution Part b asks for recycle line! Not recycle time
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- of waste? PROBLEM 3 (20) An activated sludge wastewater treatment system uses a 8-million-L aeration basin. The mean cell retention time is 12 days. The MLSS is kept at 3100 mg/L and the recyc...
(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...
Secondary Treatment Based on a plant flow rate of 40 mgd, design an activated sludge, secondary t...
Secondary Treatment Based on a plant flow rate of 40 mgd, design an activated sludge, secondary treatment system with recycle which maintains a MLVSS = 2,000 mg/L in the aeration reactor and has an average Solids Retention Time (SRT)-4 days. The biota kinetic constants are Kinetic Coefficients for the Activated-sludge Process for the Removal of Organic Matter from Domestic Wastewater Endogenous Decay Coefficient- k(d) 0.1 Half-velocity constant- K(s VSS/qVss-da 15 Mg/L bsCOD Max. Specific Substrate Utilization Rate-k 6 G bsCOD/gVSS-da...
Problem 3 (20 pts) Your firm is doing a wastewater treatment plant upgrade for a plant...
Problem 3 (20 pts) Your firm is doing a wastewater treatment plant upgrade for a plant using activated sludge with an influent BODs concentration of 300 mg/L. Recently, the steady state inflow increased to 50.0 mᵒ/d. To maintain proper performance, a VSS concentration of 150 mg/L in the bioreactor and 2500 mg/L in the WAS line needs to be maintained. a) Draw a diagram of this scenario. b) Design the aeration tank for a cell retention time of 7 days....
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
(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...
Secondary Treatment Based on a plant flow rate of 40 mgd, design an activated sludge, secondary treatment system with recycle which maintains a MLVSS = 2,000 mg/L in the aeration reactor and has an average Solids Retention Time (SRT)-4 days. The biota kinetic constants are Kinetic Coefficients for the Activated-sludge Process for the Removal of Organic Matter from Domestic Wastewater Endogenous Decay Coefficient- k(d) 0.1 Half-velocity constant- K(s VSS/qVss-da 15 Mg/L bsCOD Max. Specific Substrate Utilization Rate-k 6 G bsCOD/gVSS-da...
Problem 3 (20 pts) Your firm is doing a wastewater treatment plant upgrade for a plant using activated sludge with an influent BODs concentration of 300 mg/L. Recently, the steady state inflow increased to 50.0 mᵒ/d. To maintain proper performance, a VSS concentration of 150 mg/L in the bioreactor and 2500 mg/L in the WAS line needs to be maintained. a) Draw a diagram of this scenario. b) Design the aeration tank for a cell retention time of 7 days....
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