Assignment 6 [ SCI 112 ] -Wastewater Treatment Plant PDF

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This course examines the core topics in environmental science and how environmental science informs sustainability, environmental policies, economics, and personal choices. Students will learn principles from the sciences of ecology and toxicology to study the relationships between living organis...

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SCI 112 01

06.28.2021

Wastewater Treatment Plant Worksheet SCI 112

John Jay College of Criminal Justice

Assignment 6 – Wastewater Treatment Plant Virtual Tour

To truly appreciate the process of wastewater treatment and the magnitude of the job, one must visit a wastewater treatment plant in person. Seeing the process firsthand is ideal but not always logistically practical. In the Blue Plains treatment facility tour, you will learn all the steps required to treat the wastewater before it is released into the river. Open the link, watch the virtual tour video, https://www.dcwater.com/virtual-tour and answer the below. Answer the following questions 1) Wastewater Treatment: Sequence of Events: Based on the background material and provided virtual tour, place number next to each of the steps in the wastewater treatment process listed below to show the order (from 1 to 5, being 1 the first step and 5 the final one) in which they occur.

Order of Process

Step in Wastewater Treatment

2

Air is mixed vigorously into tanks with wastewater effluent

5

Chlorine or bleach is added to the wastewater effluent

1

Sand and grit are removed from the wastewater effluent

4

Bacteria are settled out of wastewater effluent

3

Oils and greases float to surface of wastewater effluent

2) Anything you flush down the toilet will eventually show up at the wastewater treatment plant (albeit not always in its original condition). Let’s say, for example, you accidentally drop a small towel down the toilet and it makes its way through the plumbing to the wastewater treatment plant. What device is likely to catch the towel at the plant, and what would be its ultimate destination if this occurred at the profiled treatment plant? Scum developes to separate the toilet waste from the liquidity waste, othwrise know as th primary treatment.

SCI 112 01

06.28.2021

Wastewater Treatment Plant Worksheet

3) Why is the wastewater effluent treated with chlorine, bleach, or ultraviolet light after secondary treatment?

4) Describe how the organic solids collected in the wastewater treatment plant are processed after collection, and list their final destinations at the profiled plant.

5) Eutrophication occurs when bodies of water, usually lakes or rivers, experience algal bloom from large inputs of plant nutrients like nitrogen and phosphorus, which leads to low oxygen levels in the water and adverse impacts on aquatic organisms. Both nitrogen and phosphorus can occur in large concentrations in wastewater effluent. Describe, in detail, the approaches taken at the profiled treatment plant to deal with nitrogen and phosphorus removal prior to the release of the effluent into the environment.

6) Explain why the profiled plant should be particularly concerned about eutrophication given its release site....