Question

1. At many places, the wastewater containing human excreta from homes are carried in big underground pipes is dumped into a river as such which pollutes the river water.

a. What is the common name of such wastewater?
b. Does the sewage work discharge to surface water or the ground surface?
c. How is wastewater treated?
d. Name five types of harmful organisms contained in it.
e. Name any five human diseases caused by drinking river water contained with such wastewater.

Answer 1

Dear student,

a. Sewage is the common name of such wastewater.
b. The sewage work waste is discharged to the ground surface; the water obtained from the process is discharged to surface water.
c. Such wastewater is treated through physical, chemical, and biological processes in the wastewater treatment plants.
d. The bacteria, protozoa, fungi, parasites, viruses are the harmful organisms contained in it
e. The common diseases are cholera, typhoid, diarrhoea, dysentery, jaundice, which may appear because of drinking the river water contained with such wastewater.

Regards