A 25 ml of sewage water sample was refluxed with 10 ml 0f 0.25 N K2Cr2O7 solution. The untreated dichromate requires 6.5 ml of 0.1 N FAS.10 ml of dichromate solution and 25 ml distilled water , under the same condition as sample required 27 ml of 0.1N FAS. Calculate the COD of sewage.

Q: A complete mix activated sludge secondary treatment plant is wasting from the return sludge line.…

A: Solution: Given Data: Mean cell solids residence time Qc=5 daysV=1000 L=1 m3MLVSS Xt=2000 mg/LWaste…

Q: An oil company has drilled a hydraulic fracturing well near your microbrewery in Anytown, U.S.A. It…

A: Assessing the SituationHydraulic fracturing, or fracking, is a process of injecting high-pressure…

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.