A lagoon with a volume of 1500 m3 reieves an industrial wastewater flow of 100 m3/day containing a conservative pollunt at a concentration of 0 mg/L. a. Assuming that complete mix conditions are acheived in the lagoon, determine the concentration of the conservative pollutant in the effluent from the lagoon at steady state. b. If the influent pollunt concentration is suddenly increased to 60 mg/L, what would the effluent concentration from the lagoon be 7 days later?

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Q: oluble BOD5 = 80 mg/L Assume that the BOD5 of the suspended solids may be estimated as equal to 50%…

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Q: sludge to meet their NPDES permit of 15 mg/L BOD5.  The mixed liquor concentration is 1,000 mg/L…

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Q: The BOD just downstream from a wastewater pipe is 12.9 mg/L and the DO (dissolved oxygen) is 8.6…

A: Given, BOD just downstream from wastewater pipe, L = 12.9mg/l DO at just downstream from wastewater…

Q: •Given the following information for wastewater plant, the plant is an activated sludge system with…

A: Answer Flow rate Q = 60000 m3/d Volume of Aeration tank = 7500 m3  Efficiency of aeration tank = 85%…

Q: After primary treatment, a municipal wastewater contains 150 mg/L BOD5. The wastewater flow of 0.44…

A: To determine- Limiting value of biotreatment safety factor.

Q: Two wastewater streams A and B, having an identical ultimate BOD are getting mixed to form the…

A: Given data- 5-day BOD of stream A =50 mg/L, BOD rate constant KD=0.115 per day, Temperature…

Q: After primary treatment, a municipal wastewater contains 150 mg/L BOD5. The wastewater flow of 0.44…

A: BOD5=150 mg/LQ=0.44 m3/s (10 MGD)SRT = 12dHRT=6h To determine- Limiting value of SRT

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Q: A conventional activated-sludge system treats 11,000 m3/day of wastewaterin an aeration tank with a…

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Q: A municipal wastewater treatment plant processes an average of 14,000 m3 / day. The peak flow is…

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Q: An aerated lagoon wastewater treatment is to be designed for a municipal wastewater. The design…

A: It is required to determine the applied BOD to the lagoon. Si=Influent BOD51-Primary clarifier…

Q: The PEF, Inc. firm desires to utilize a complete-mix activated-sludge system with recycle to treat…

A: Given, MLVSS (X) = 2500 mg/L Influent soluble BOD5 (So) = 292 mg/L θc = 7.24 days   Effluent BOD5…

Q: A 14 mgd wastewater treatment plant has a primary clarifier that treats an influent with 800 mg/L of…

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Q: The saturation DO concentration of a stream is 9.1 mg/L. At a sewage outfall, the DO of the stream…

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Q: A wastewater with a BOD of 25mg/L is discharged through an outfall to a freshwater stream of mean…

A: BOD = 25 mg/LMean velocity of freshwater stream = Vmean-fresh = .1m/sDOdownstream =…

Q: After primary treatment, a municipal wastewater contains 150 mg/L BOD5. The wastewater flow of 0.44…

A: BOD5=150 mg/LQ=0.44 m3/s (10 MGD)SRT = 12dHRT=6h To determine- Limiting value of SRT

Q: AA רואד רחר בורו Determine the size (diameter and depth) of the secondary clarifier (s) at a…

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Q: 1. A wastewater treatment plant serving a city of 200,000 discharges 1.10 m/s of treated effluent…

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Q: An activated sludge wastewater treatment system was designed and operated in a steady state under…

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Q: A conventional activated-sludge system treats 11,000 m³/day of wastewater with a BOD of 180 mg/L in…

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Q: In a BOD test, 5 ml of wastewater (with no dissolved oxygen) is diluted with 295 ml of water…

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Q: Homework - A sample of wastewater was incubated for 7-days at 20°C and showed a BOD of 208 mg/L..…

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Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.