A BOD test is run using 100mL of treated wastewater. The initial DO of the mixture after diluting the waste sample with distilled water is 9.0mg/L. After 5-day incubation, the DO measured was 4.0mg/L. After a long period of time, the DO is 2.0mg/L and no longer seems to be decreasing. Assume that nitrification has been inhibited. Determine the following: a)BOD5 & BODu of the waste sample b) BOD5 of the mixture and c) k   THANK YOU

Q: Gravity thickener analysis and design − a gravity thickener concentrates waste activated sludge…

A: Given Data: The waste activated sludge flow rate is 250,000 gal/day. The suspended solids…

Q: The analysis of a water sample for MPN calculation in Multiple Tube Fermentation Test is given…

A: Given: Multiple tube fermentation test is given below,

Q: A coagulation treatment plant with flow of 0.5 metre cube per second is dosing alum at 23 milligram…

A:

Q: Increasing wasting from the secondary treatment process: Decreases SRT and MLSS concentration.…

A:

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

A:

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

A: The given data is: The waste-water discharge. Q=14 mgd The solid concentration, C=800 mg/l The…

Q: A 250 ml sample of water has an initial pH of 10. A 50 ml of 0.02N H₂SO4 is required to titrate the…

A:

Q: A laboratory provides the following solids analysis for a wastewater sample: TS = 290 mg/L; TDS = 37…

A: Total solidsTS=290 mg/lTotal dissolved solidsTDS=37 mg/lFixed suspended solidsFSS=38 mg/la…

Q: A laboratory test on a suspension of solid in liquid gave the following information: Original height…

A: The given data is shown below: Original height of sludge before settling= 10 inchesFree settling…

Q: disk, drying the disk at 105°C, and igniting the residue by placing the dried sample in a muffle…

A: The volume of the sample, V = 30 mLmass of filter dish, mass of dish+ dry solid, mass of sish+…

Q: Table Q1-2 Weight (g) Mass of residue after drying at 105 ¿C Mass of residue after ignition at 550…

A:

Mechanical Processes

In civil engineering, the materials have to undergo a series of manufacturing processes before using them in construction and structural applications. These manufacturing processes form the foundation stone of mechanical processes. Some of the civil engineering materials such as bars, metallic beams, metallic columns, surveying equipment, earthmovers, overhead cranes, structural and construction components, and even cement that is the most fundamental construction component need to undergo different manufacturing processes before they are ready to use. These processes are mechanical.