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Calculate the steady-state flow rate, Qe in m3/day, and concentration of lake effluent, ce in 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. 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...
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?
\The flow rate to treat is 5.6 MGD and the BOD concentration is 150 mg/L. The...
\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; Ks = 25 mg BOD/L; kd = 0.06 1/day; Y = 0.5 g cells/g BOD. The influent ammonia concentration is 40 mg/L and nitrification is needed. It takes 1400 ft3 of air per pound of BOD. Use...
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.
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. An effluent water contains significant quantities of non-emulsified oil with a concentration of 176 mg/l....
1. An effluent water contains significant quantities of non-emulsified oil with a concentration of 176 mg/l. In order to maintain the concentration of the oil below 25 mg/l, alum with a dosage of 35mg/l was used. Based on the preliminary experiments it was found that every gram of alum produces 0.65 g of sludge. The weight percentage of sludge in the effluent is 2.75. The flow rate of oily effluent water to the treatment unit is 0.75 m3/min at 30°C....
Three pipes from an industrial site flow into a common pipe. The individual flows and COD...
Three pipes from an industrial site flow into a common pipe. The individual flows and COD concentrations as shown here: Q1 = 10.0 gpm, c1 = 50.0 mg/L; Q2 = 50.0 gpm, c2 = 30.0 mg/L; Q3 = 500.0 gpm, c2 = 0.3 mg/L. What is the concentration in the common pipe, once the three streams are well mixed?
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/
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of...
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
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...
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.
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. An effluent water contains significant quantities of non-emulsified oil with a concentration of 176 mg/l. In order to maintain the concentration of the oil below 25 mg/l, alum with a dosage of 35mg/l was used. Based on the preliminary experiments it was found that every gram of alum produces 0.65 g of sludge. The weight percentage of sludge in the effluent is 2.75. The flow rate of oily effluent water to the treatment unit is 0.75 m3/min at 30°C....
Situation (note: Problem 2 is not linked with Problem 1): Assuming the design flow rate of raw wastewater to be treated is 20 MGD in the design year, the dissolved BODs is 380 mg/L, and SS is 360 mg/L. The wastewater generated by the sludge treatment process is about 4 MGD with the dissolved BODs being 1800 mg/L, and SS being 1200 mg/L, and will be returned to the wet well in the pumping station at the beginning of the...
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