A wastewater treatment plant must disinfect its effluent before discharging the wastewater to a nearby stream. The wastewater contains 6.5 x 105 fecal coliform – forming units (CFU) per liter. The maximum permissible fecal coliform concentration that may be discharged is 3000 fecal coliform CFU/L. It is proposed that a pipe carrying the wastewater be used for the disinfection process. Determine the length of pipe required if the linear velocity of the wastewater pipe is 0.85 m/s. Assume that the pipe behaves as a steady-state plug flow system and that the reaction rate constant for the destruction of the fecal coliform is 0.23 per min.

Q: A wastewater is to be disinfected with 35mg/L of chlorine to obtain 99% kill of micro-organisms. The…

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Q: A wastewater sample contains two nitrogen species, namely ammonia and nitrate. Consider the atomic…

A: Given, The atonic weight of N, H, and O as 14 g/mol, 1 g/mol and 16 g/mol respectively Concentration…

Q: A wastewater treatment plant must disinfect its effluent before discharging the wastewater to a…

A: Given data: Initial concentration of California colony (Co) = 5.5 x 105 CFU/L. Maximum California…

Q: The wastewater having an organic concentration of 54 mg/l is flowing at a steady rate of 0.8 m³/day…

A: Given data- Organic concentration- Lo=54 mg/L,Q=0.8 m3/day,dimension 2 m×4 m×2 m.decay constant…

Q: If the BOD3 of a wastewater sample is 75 mg/l and reaction rate constantk (base e) is 0.345 per day,…

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Q: Trickling filter is a fixed-bed biological reactor that operates under aerobic conditions. It is…

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Q: An activated sludge treatment plant treats a sewage at a flow of 3*10^6 I/day with a BOD of 350…

A: FM is food by microorganisms…

Q: A wastewater treatment plant treats a wastewater at a flowrate of 10 million liters per day. The…

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Q: D test is to bc run on a sample of waste TI.

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Q: A wastewater sample has 7.5 x 105 CFU per liter. The allowable fecal coli form concentration is 3500…

A: Given: Initial coliform concentration, Co = 7.5 x 105 CFU/L Allowable coliform concentration, C =…

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.