A batch reactor is to be used to treat raw water to achieve 95% pollutant removal. The pollutant has a second-order reaction rate constant of 0.35 L/(mg.day), what is the required residence time of water in the batch reactor, in days?
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A batch reactor is to be used to treat raw water to achieve 95% pollutant removal. The pollutant has a second-order reaction rate constant of 0.35 L/(mg.day), what is the required residence time of water in the batch reactor, in days?
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- A continous flow, completely mixed reactor is to be used to treat raw water to achieve 95% pollutant removal. The pollutant has a second-order reaction rate constant of 0.35 L/(mg.day), what is the required residence time of water in the continous flow reactor, in days?A continous flow, completely mixed reactor is to be used to treat raw water to achieve 95% pollutant removal. The pollutant has a second-order reaction rate constant of 0.35 L/(mg.day), what is the required residence time of water in the batch reactor, in days?A thermal oxidizer incinerator operates as a plug flow reactor at a temperature of 250 deg C. The first order rate constant for vinyl chloride removal is 45/sec at 250 degrees C and the inside diameter of the incinerator (which is shaped like a cylinder) is 1 m. (a) If the pollutant (Vinyl chloride) enters the incinerator at a flow rate of 3,000 m3/min and it is desired to remove 99.99% of the pollutant, what should the length of the incinerator be? (b) What is the length of the incinerator if the desired removal is increased to 99.99995%?
- A CMFR is working at a steady state. The volume of the reactor and flow rate are 10m3 and 2.5m3/h respectively. The influent pollutant concentration is 10mg/L. Calculate the pollutant concentration in the reactor when the pollutant is going first order decay with reaction rate constant k=0.3/hA batch reactor is to be used to treat raw water to achieve 95% pollutant removal. The pollutant has a second-order reaction rate constant of 0.35 L/(mg.day), what is the required residence time of water in the batch reactor, in days? For the same water in above problem , assume we are planning to use a continuous flow, completely mixed reactor, what would be the required residence time? How does this compare to the time for the batch reactor in problem two?250 lbs. of contaminated soil containing 0.500 g of a pollutant per kilogram of soil will be treated (remediation) by agitating the soil in a tank containing a suitable liquid phase to transfer the pollutant. Consider a tank holding 500 gal of liquid is built to treat 250 lb of contaminated soil. The pollutant degrades following a first-order kinetic in which 0.50 percent of it is removed per second. Assuming the reactor is operated for 2 hours, what will be: a) The mass of pollutant remaining in the washed soil b) The g/kg of pollutant remaining in the soil and therefore, the percent removal c) The concentration of the pollutant in the liquid phase
- A wastewater contains 0.2 M pyruvate. Estimate the volume of methane in liters (STP) that would be produced per liter of wastewater from anaerobic treatment in a CSTR with a detention time of 15 d, assuming an efficiency of wastewater treatment of 97%. In order to solve this problem use thermodynamics to estimate f9 with an energy transfer efficiency of 60%, and assume the organism decay rate is 0.08 d'. Please correct answer otherwise dislikeEfficiency of an ESP is a function of the flue gas characteristics (temperature and moisture), electrical resistivity of the particle and particle size, can be estimated by the Deutsch-Anderson equation: η = 1 − exp (−Aw/Q) Calculate the efficiency of ESP has a specific area of collection plate as 100 m2, drift velocity 1 m/s and flow rate of flue gas as 40 m/s.A flue gas contains mainly 15 micron sized particles (density 2000 kg/m3) to be removed by a cyclone collector. The body diameter is assumed to be 0.8m. A high efficiency mode is desired. The inletvelocity is 15 m/s with a density of 1.225 kg/m3. What is the efficiency of removal of the 15 micron sized particles?
- A 440-MW coal-fired power plant is burning coal that contains 185 ppb of mercury. The coal firing rate is 300,000 Ib/hr, and the flue gas flow rate is 1.0 million scfmConsider a wastewater treatment reactor where with an influent flow rate of 2,500 m3/day and where the biomass has the following kinetic characteristics: fs0 = 0.7, KS = 10 mg/l, k= 10 mg/mg VSS-day, b = 0.1/day, Y=0.50 g VSS/g substrate, fd=0.8, and Xa=1,500 mg VSS/l. If the reactor was designed with a safety factor of 30, what is its design fs value.Calculate the percent volatility of the solids given that an empty container weighs 15.7g. A sample from the aeration tank is put in the container. At temperature 104 degC , the container now weighs 21.2211g. It was further heated in a furnace with a temperature of 540degC and gained a constant weight of 20.5057.