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11. A lagoon with constant volume of 450,000 m' is being used to treat two separate...
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?
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...
please explain good Question 4 (20 points) A lagoon with volume 1.200 m' has been receiving...
please explain good
Question 4 (20 points) A lagoon with volume 1.200 m' has been receiving a steady flow of conservative waste at a rale of 100 m'iday for a long enough time to assume steady state conditions apply. The waste entering the lagoon has a concentration of 10 mg/L. Assuming completely mixed conditions. a) What would be the concentration of pollutant in the effluent leaving the lagoon? (10 points) b) If the input waste concentration suddenly increased to 100...
A lake with volume 10^3 m^3 is fed by a pollution-free stream with flow rate 5...
A lake with volume 10^3 m^3 is fed by a pollution-free stream with flow rate 5 m^3/min. A factory dumps 0.1 m^3/s of a non-conservative waste with concentration 100 mg/L into the lake. The pollutant has a reaction rate coefficient K of 0.2/day. Assuming the pollutant is well mixed in the lake; find the steady-state concentration of pollutant in lake.
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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...
Problem 3 (15 pts) A long, narrow lagoon is to be designed to treat 220 mg/L...
Problem 3 (15 pts) A long, narrow lagoon is to be designed to treat 220 mg/L of industrial waste flowing at a rate of 500 L/min. The decay rate constant was found to be 5.0(mg/L)/h (same as 5.0 mg/L·h). Assume 90% removal is achieved in the lagoon. a) What order is the reaction rate? b) What is the residence time in the lagoon? c) What is the volume in ms of this plug flow reactor? Draw a diagram, write governing...
A CSTR is used to treat an industrial waste. If the reaction that destroys the pollutant...
A CSTR is used to treat an industrial waste. If the reaction that destroys the pollutant follows first-order kinetics with k = 0.2 d^-1 what is the outlet concentration after treatment? Assume the reactor volume is 500 m3, the volumetric flowrate of the single inlet and outlet is 50 m^3/day, and the pollutant concentration in the inlet is at a concentration of 100 mg/L.
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...
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...
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...
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Question 4 (20 points) A lagoon with volume 1.200 m' has been receiving a steady flow of conservative waste at a rale of 100 m'iday for a long enough time to assume steady state conditions apply. The waste entering the lagoon has a concentration of 10 mg/L. Assuming completely mixed conditions. a) What would be the concentration of pollutant in the effluent leaving the lagoon? (10 points) b) If the input waste concentration suddenly increased to 100...
A lake with volume 10^3 m^3 is fed by a pollution-free stream with flow rate 5 m^3/min. A factory dumps 0.1 m^3/s of a non-conservative waste with concentration 100 mg/L into the lake. The pollutant has a reaction rate coefficient K of 0.2/day. Assuming the pollutant is well mixed in the lake; find the steady-state concentration of pollutant in lake.
Problem 3 (15 pts) A long, narrow lagoon is to be designed to treat 220 mg/L of industrial waste flowing at a rate of 500 L/min. The decay rate constant was found to be 5.0(mg/L)/h (same as 5.0 mg/L·h). Assume 90% removal is achieved in the lagoon. a) What order is the reaction rate? b) What is the residence time in the lagoon? c) What is the volume in ms of this plug flow reactor? Draw a diagram, write governing...
A CSTR is used to treat an industrial waste. If the reaction that destroys the pollutant follows first-order kinetics with k = 0.2 d^-1 what is the outlet concentration after treatment? Assume the reactor volume is 500 m3, the volumetric flowrate of the single inlet and outlet is 50 m^3/day, and the pollutant concentration in the inlet is at a concentration of 100 mg/L.
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...
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...
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