The number of coliform bacteria is reduced from an initial concentration of 2 million per 100 mL to 400 per 100 mL in a...
The number of coliform bacteria is reduced from an initial concentration of 2 million per 100 mL to 400 per 100 mL in a long narrow chlorination tank under steady wastewater flow with a hydraulic detention time of 30 min and a chlorine concentration of 5.2 mg/L. Assuming, n = 1.3, first-order kinetics and ideal plug flow, calculate the reaction-rate constant. Using this rate constant, find the effluent concentration if the reactor is operated as a completely-mixed reactor. Hint: θ for completely-mixed reactor is given by: 1 (?? − 1). Which reactor type is more efficient and why?
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The number of coliform bacteria is reduced from an initial concentration of 2 million per 100 mL to 400 per 100 mL in a...
5. A disinfection process destroys E.coli in water. The influent concentration of coliform is 120 coliforms/mL....
5. A disinfection process destroys E.coli in water. The influent concentration of coliform is 120 coliforms/mL. If the reactor volume is 500 L and flow is 1600 L/day then what is the effluent concentration of coliform per liter. Assume the reactor is at steady state with a reaction rate constant of 0.75 day!. (15 points)
A. Non-Texthook: Problem NT 4-3: 2 pts Given: A diffuser at the end of a 1.00...
A. Non-Texthook: Problem NT 4-3: 2 pts Given: A diffuser at the end of a 1.00 m diam., 9.00 km long ocean outfall pipe from the Hyperion Wastewater Treatment Plant (El Segundo, CA) discharges treated wastewater into the Pacific Ocean 7.20 km from Santa Monica beach. The wastewater contains 10 coliform bacteria per milliliter The wastewater discharge flow rate is 0.560 m/s. The coliform first-order death rates in the diffuser pipe and in seawater are 0.0500 h ' and 0.300...
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...
reply ma as soon as possible 120 points total Due: October 23, 2019 Budget your time...
reply ma as soon as possible
120 points total Due: October 23, 2019 Budget your time carefully TRUE OR FALSE (45 points - 3 points cach): Mark whether the statements as written are "true" or "false". If the statement is false, make minor changes to the statement so that the statement is true. The primary adverse health effect resulting from the disposal of mercury wastes into Minamata Bay was dysentery The flow regime in horizontal velocity grit chambers approaches continuous...
6.8 a. Using the variable-order kinetic information from Example 6.8 for a municipal wastewater, ...
6.8 a. Using the variable-order kinetic information from Example 6.8 for a municipal wastewater, determine the effluent BODs concentration for a complete-mix activated sludge facility operated at a five-day solids residence time. b. For a wastewater flow rate of 2 million gallons per day with character- istics of a typical wastewater from Table 6.1, determine the discharge rate of biomass (Ibs/day). in the lagooll lall x biomass Rearranging Eq.(6.37) V X HRT EXAMPLE 6.8 Determine the required volume of an...
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...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
5. A disinfection process destroys E.coli in water. The influent concentration of coliform is 120 coliforms/mL. If the reactor volume is 500 L and flow is 1600 L/day then what is the effluent concentration of coliform per liter. Assume the reactor is at steady state with a reaction rate constant of 0.75 day!. (15 points)
A. Non-Texthook: Problem NT 4-3: 2 pts Given: A diffuser at the end of a 1.00 m diam., 9.00 km long ocean outfall pipe from the Hyperion Wastewater Treatment Plant (El Segundo, CA) discharges treated wastewater into the Pacific Ocean 7.20 km from Santa Monica beach. The wastewater contains 10 coliform bacteria per milliliter The wastewater discharge flow rate is 0.560 m/s. The coliform first-order death rates in the diffuser pipe and in seawater are 0.0500 h ' and 0.300...
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...
reply ma as soon as possible
120 points total Due: October 23, 2019 Budget your time carefully TRUE OR FALSE (45 points - 3 points cach): Mark whether the statements as written are "true" or "false". If the statement is false, make minor changes to the statement so that the statement is true. The primary adverse health effect resulting from the disposal of mercury wastes into Minamata Bay was dysentery The flow regime in horizontal velocity grit chambers approaches continuous...
6.8 a. Using the variable-order kinetic information from Example 6.8 for a municipal wastewater, determine the effluent BODs concentration for a complete-mix activated sludge facility operated at a five-day solids residence time. b. For a wastewater flow rate of 2 million gallons per day with character- istics of a typical wastewater from Table 6.1, determine the discharge rate of biomass (Ibs/day). in the lagooll lall x biomass Rearranging Eq.(6.37) V X HRT EXAMPLE 6.8 Determine the required volume of an...
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...
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