To determine the BOD5 of a waste water sample, 5, 10 and 50 ml aliquots of the waste water were diluted to 300 ml and incubated at 20°C in BOD bottles for 5 days. Sl. No. Waste water Initial DO, volume mg/l 5 9.2 10 9.1 50 8.4 Based on the data, the average BOD5 of the wastewater is equal to 1. 2. 3. DO after 5 days, mg/l 6.9 4.4 0.0

Q: 1. Explain why it is difficult to determine the engineering properties of municipal solid waste?

A: Brief concept- Municipal solid waste (MSW)- Residential, industrial, institutional, commercial,…

Q: If the BOD5 of waste is 75 mg/L and the k is 0.150 d-1, What is the ultimate BOD?

A: BOD (Bio-Chemical Oxygen Demand) is defined as the amount of oxygen demanded by the microorganisms…

Q: Give the definition of the following Wastes Classification; a. Municipal Wastes b. Commercial Wastes…

A: Introduction to waste: Waste is an undesirable substance that is dumped after a substance's primary…

Q: What is the expected energy change if all of the waste plastics are combusted?

A: Concept- Plastic wastes- Plastic waste is the formation of plastic objects such as plastic bottles…

Q: 2. Explain the relationship between solid and hazardous waste. What events prompted Congress to…

A: Although the regulatory definitions given out by the Environmental Protection Agency are…

Q: Produce a flow diagram to explain the steps involved in the management of waste material.

A:

Q: A metal plating company is planning to treat its waste sludge to recover the nickel from it. Would…

A: Introduction- Sludge is a semi-solid residue substance formed as a byproduct of treating industrial…

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.