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A tank operated as a CFSTR used to remove benzene from a flow stream is 1500 m3 in size. The flow...
Design rectangular primary sedimentation tank to remove 60% of SS and 30% of BOD from the...
Design rectangular primary sedimentation tank to remove 60% of SS and 30% of BOD from the total an equivalent load of influent BOD and SS = 700 kg/day when the maximum expected flow is 8000 m3/day and the detention time is 2.5 hr. (take L:W = 3:1). Then estimate: 1- The quantity of the sludge that is removed (assume moisture content of sludge (m.c) = 90%). 2. The effluent concentrations of BOD and SS.
Q4:Design rectangular primary sedimentation tank to remove 30% of BOD from the total an equivalent load...
Q4:Design rectangular primary sedimentation tank to remove 30% of BOD from the total an equivalent load of influent BOD and SS=700kg/day when the maximum expected flow is 8000m2/day and the detention time is 2.5hr .(take L:W=3:1). Then estimate: 1-The quantity of the sludge that is removed in an efficiency of 60% (assume moisture content of sludge =90%) 2-The effluent concentration of BOD and SS.
1. A lagoon is to be designed to remove a nonconservative pollutant with an input flow...
1. A lagoon is to be designed to remove a nonconservative pollutant with an input flow of 150 m3/d, and the concentration is 20 mg/L. The volume of this lagoon is 3000 m², and the first order reaction rate of the pollutant is 0.20/day. Assuming it is a complete mixing, please calculate the pollutant concentration in the effluent. - (4 Marks). tt Assume that the gas above the soda in a bottle of soft drink is pure CO2 with a...
A well-mixed lagoon is used to pre-treat an agricultural waste stream before it is sent to...
A well-mixed lagoon is used to pre-treat an agricultural waste stream before it is sent to the local municipal wastewater treatment plant. The waste stream has a flow rate of 400 m3/d and contains 300 mg/L of biodegradable waste. The waste decomposes via a first- order biodegradation process with a rate constant of 0.35 d-1. How large must the lagoon be in order to drive the concentration of waste down to 20 mg/L (as required by the municipal wastewater treatment...
A CMFR is used to treat an input water stream flowing at a rate of 3.0...
A CMFR is used to treat an input water stream flowing at a rate of 3.0 m^3/h. The input pollutant concentration is 25.0 mg/L and decays with a first-order rate constant of 0.20 day^-1. The effluent from the CMFR must have a concentration of 10.0 mg/L. a) What is the required volume of the CMFR? b) If a PFR is used instead, what is the required volume of the PFR?
A complete-mix activated sludge system is used to treat municipal wastewater after primary sedime...
A complete-mix activated sludge system is used to treat municipal wastewater after primary sedimentation at 20 °C with MLVSS concentration of 2000 g/m3. The discharge standard for soluble BOD, concentration in the effluent is 0.5 g/m. The characteristics of the primary influent are: flow Q -2000 m'/d, soluble BOD -200 g/m3, Using these data and the kinetic coefficients in following, determine 1. Theoretical solids retention time (SRT) in unit of days 2. Pk vss in unit of kg VSS/d 3....
4. A wet scrubber uses lime to remove HCI from a gas waste stream. The scrubber operation charact...
solve part C part D and E
4. A wet scrubber uses lime to remove HCI from a gas waste stream. The scrubber operation characteristics are as follows: Scrubber efficiency Minimum gas velocity 90% 2.5 m/s 18 m3/s 120 ppm, by volume . Gas flow rate HCL Concentration Calculate: a) Scrubber diameter b) HCL removal rate, kg/day c) Required stoichiometric CaO loading, kg/day (theoretical) d) If the lime is only available in a 12% slurry concentration, what is the field...
We never learned this and I can’t find it in the textbook but the assignment is...
We
never learned this and I can’t find it in the textbook but the
assignment is still due. I could really use the help and a brief
explanation on how to go about this problem. Thank you
Homework 2 ENV 3006C 2018 1. A small sheep farm produces a waste flow of 10,000 gallons per day. The concentration of [TOC] total organic carbon is 600 mg/L. The flow is directed to a lagoon that aerated and mixed. The reaction rate...
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...
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...
Design rectangular primary sedimentation tank to remove 60% of SS and 30% of BOD from the total an equivalent load of influent BOD and SS = 700 kg/day when the maximum expected flow is 8000 m3/day and the detention time is 2.5 hr. (take L:W = 3:1). Then estimate: 1- The quantity of the sludge that is removed (assume moisture content of sludge (m.c) = 90%). 2. The effluent concentrations of BOD and SS.
Q4:Design rectangular primary sedimentation tank to remove 30% of BOD from the total an equivalent load of influent BOD and SS=700kg/day when the maximum expected flow is 8000m2/day and the detention time is 2.5hr .(take L:W=3:1). Then estimate: 1-The quantity of the sludge that is removed in an efficiency of 60% (assume moisture content of sludge =90%) 2-The effluent concentration of BOD and SS.
1. A lagoon is to be designed to remove a nonconservative pollutant with an input flow of 150 m3/d, and the concentration is 20 mg/L. The volume of this lagoon is 3000 m², and the first order reaction rate of the pollutant is 0.20/day. Assuming it is a complete mixing, please calculate the pollutant concentration in the effluent. - (4 Marks). tt Assume that the gas above the soda in a bottle of soft drink is pure CO2 with a...
A CMFR is used to treat an input water stream flowing at a rate of 3.0 m^3/h. The input pollutant concentration is 25.0 mg/L and decays with a first-order rate constant of 0.20 day^-1. The effluent from the CMFR must have a concentration of 10.0 mg/L. a) What is the required volume of the CMFR? b) If a PFR is used instead, what is the required volume of the PFR?
A complete-mix activated sludge system is used to treat municipal wastewater after primary sedimentation at 20 °C with MLVSS concentration of 2000 g/m3. The discharge standard for soluble BOD, concentration in the effluent is 0.5 g/m. The characteristics of the primary influent are: flow Q -2000 m'/d, soluble BOD -200 g/m3, Using these data and the kinetic coefficients in following, determine 1. Theoretical solids retention time (SRT) in unit of days 2. Pk vss in unit of kg VSS/d 3....
solve part C part D and E
4. A wet scrubber uses lime to remove HCI from a gas waste stream. The scrubber operation characteristics are as follows: Scrubber efficiency Minimum gas velocity 90% 2.5 m/s 18 m3/s 120 ppm, by volume . Gas flow rate HCL Concentration Calculate: a) Scrubber diameter b) HCL removal rate, kg/day c) Required stoichiometric CaO loading, kg/day (theoretical) d) If the lime is only available in a 12% slurry concentration, what is the field...
We
never learned this and I can’t find it in the textbook but the
assignment is still due. I could really use the help and a brief
explanation on how to go about this problem. Thank you
Homework 2 ENV 3006C 2018 1. A small sheep farm produces a waste flow of 10,000 gallons per day. The concentration of [TOC] total organic carbon is 600 mg/L. The flow is directed to a lagoon that aerated and mixed. The reaction rate...
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...
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...
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