You are designing a sewage lagoon to accommodate an input flow of 0.1 m3/min. At steady-state,...
You are designing a sewage lagoon to accommodate an input flow of 0.1 m3/min. At steady-state, the effluent (also at 0.1 m3/min) from the lagoon must not exceed a BOD of 10 mg/L. Assume the lagoon is well mixed, that there are no additional inputs to the lagoon and that the BOD degrades with a reaction rate constant equal to 0.1 day-1. What is the volume of the lagoon needed to achieve the effluent BOD goal if the influent BOD is 100 mg/L?
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You are designing a sewage lagoon to accommodate an input flow
of 0.1 m3/min. At steady-state,...
A lagoon with volume 1,000 m3 has been receiving a steady flow of a nonconservative pollutant...
A lagoon with volume 1,000 m3 has been receiving a steady flow of a nonconservative pollutant with reaction rate of .20/day at a rate of 100 m3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 100 mg/L. Assume completely mixed conditions. If the input waste concentration suddenly decreased to 10mg/L, what would the concentration in the effluent be 10 days later?
Question 23 A sewage lagoon that has a surface area of 10 ha and a depth...
Question 23 A sewage lagoon that has a surface area of 10 ha and a depth of receiving 8620.0 m/d of sewage containing 80.0 mg/L of biodegradable 1.2 m is con taminant. At steady state, the effluent from the lagoon must not exceed 22.0 mg/L of biodegradable contaminant. Assuming the lagoon is well mixed and that there are no losses or gains of water in the lagoon other coeff A 0.33 d than the sewage input, what biodegradation reaction rate...
Calculate the steady-state flow rate, Qe in m3/day, and concentration of lake effluent, ce in mg/L,...
Calculate the steady-state flow rate, Qe in m3/day, and concentration of lake effluent, ce in mg/L, for the following system. The lake is well-mixed with two streams that enter the lake. Evaporation takes place from the lake but because c is not volatile none of it evaporates. QvAP 200 m2/day CEVA,-0 mg/L Q1-8 m3/min 1 4 mg/L QE CE Lake Q2-12 L/s c2-50 mg/L
please ahow all work What will be the steady-state effluent BOD concentration for a CSTR (complete...
please ahow all work
What will be the steady-state effluent BOD concentration for a CSTR (complete mix reactor with flows in and out, and no recycle) treating a wastewater with an initial BOD of 200 mg/L. The influent flow rate is 100 liters/day, and the reactor volume is 120 liters. Assume first order kinetics with a biodegradation rate constant of 0.5 day! Use the space provided below to show your calculations. mg/L Effluent BOD concentration
1. Calculate the volume of a completely mixed reactor needed (in m3)lto treat a flow rate of 3 MG...
problem 1 and 2!
please and thanks!
1. Calculate the volume of a completely mixed reactor needed (in m3)lto treat a flow rate of 3 MGD wastewater. The wastewater contains 220 mg/L of BOD with a rate coefficient of 0.4/d. The effluent target is 20 mg/L. Assume steady state. 2. For the same conditions, what would the size of a plug flow reactor be (in m2)?
1. Calculate the volume of a completely mixed reactor needed (in m3)lto treat a...
please help
A lagoon with volume 1,200 m3 has been receiving a steady flow of a conservative waste at a rate of 100 m3/day for a long enough time to assume that steady-stateconditions apply. The waste entering the lagoon has a concentration of 10 mg/L. assuming completely mixed conditions,(a) What should be the concentration of pollutant in the effluent leaving the lagoon?(b) If the input waste concentration suddenly increased to 100 mg/L, what the concentration in the effluent be 7 days later?C)A...
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...
4. Rural facultative pond with a winter flow of 6000 m3/d where the influent has a BOD concentration of 90 g/m^3. The reaction rate is given by Kc(T)=0.3x1.135^(T-20). Assuming completely mixed, use M...
4. Rural facultative pond with a winter flow of 6000 m3/d where the influent has a BOD concentration of 90 g/m^3. The reaction rate is given by Kc(T)=0.3x1.135^(T-20). Assuming completely mixed, use Marias & Shaw equation to determine the pond volume to produce an effluent of 15 mg/l/
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...
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...
Question 23 A sewage lagoon that has a surface area of 10 ha and a depth of receiving 8620.0 m/d of sewage containing 80.0 mg/L of biodegradable 1.2 m is con taminant. At steady state, the effluent from the lagoon must not exceed 22.0 mg/L of biodegradable contaminant. Assuming the lagoon is well mixed and that there are no losses or gains of water in the lagoon other coeff A 0.33 d than the sewage input, what biodegradation reaction rate...
Calculate the steady-state flow rate, Qe in m3/day, and concentration of lake effluent, ce in mg/L, for the following system. The lake is well-mixed with two streams that enter the lake. Evaporation takes place from the lake but because c is not volatile none of it evaporates. QvAP 200 m2/day CEVA,-0 mg/L Q1-8 m3/min 1 4 mg/L QE CE Lake Q2-12 L/s c2-50 mg/L
please ahow all work
What will be the steady-state effluent BOD concentration for a CSTR (complete mix reactor with flows in and out, and no recycle) treating a wastewater with an initial BOD of 200 mg/L. The influent flow rate is 100 liters/day, and the reactor volume is 120 liters. Assume first order kinetics with a biodegradation rate constant of 0.5 day! Use the space provided below to show your calculations. mg/L Effluent BOD concentration
problem 1 and 2!
please and thanks!
1. Calculate the volume of a completely mixed reactor needed (in m3)lto treat a flow rate of 3 MGD wastewater. The wastewater contains 220 mg/L of BOD with a rate coefficient of 0.4/d. The effluent target is 20 mg/L. Assume steady state. 2. For the same conditions, what would the size of a plug flow reactor be (in m2)?
1. Calculate the volume of a completely mixed reactor needed (in m3)lto treat a...
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 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...
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...
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