Chapter 37, Problem 1Q

Why did you add Escherichia coli to sewage, which is full of becteria?

Summary Introduction

To write:

The reason E.coli is added to sewage, which is full of bacteria.

Introduction:

Raw sewage is mainly the water containing excrement, industrial release and debris. Excrement is the major source of harmful microorganisms including bacteria, viruses and parasites. These microorganisms contaminate the sewage water that leads to many water-borne diseases.

Explanation of Solution

Sewage is a rich source of bacteria that infects the enteric bacteria like E. coli. Phages present in the sewage will go through many cycles of the infection and lyses E. coli. E. coli acts as a sewage indicator and mainly found in sewage treatment plants and environmental waters.

The quantifications of E. coli serve in order to evaluate the performance of the microbial residue. Virulent bacteriophage multiplies rapidly after infecting the host cell and destroys the cell through lysis. The bacteriophage may lyse through the host cell or lysogenize the host. It shows the pathogenicity present in the water and the sewage sludge.

Conclusion

Thus, E. coli is added to the sewage, which is full of bacteria as it acts as sewage indicators and found in the environmental waters.